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* [linus:master] [block]  245618f8e4: stress-ng.fpunch.fail
@ 2025-05-22  2:29 kernel test robot
  2025-05-22 12:37 ` Nilay Shroff
  0 siblings, 1 reply; 6+ messages in thread
From: kernel test robot @ 2025-05-22  2:29 UTC (permalink / raw)
  To: Nilay Shroff
  Cc: oe-lkp, lkp, linux-kernel, Jens Axboe, Christoph Hellwig,
	Hannes Reinecke, Ming Lei, cgroups, linux-block, oliver.sang



Hello,


we don't have enough knowledge if this is a kernel issue or test case issue.

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/nr_threads/disk/testtime/fs/test/cpufreq_governor:
  lkp-icl-2sp4/stress-ng/debian-12-x86_64-20240206.cgz/x86_64-rhel-9.4/gcc-12/100%/1HDD/60s/xfs/fpunch/performance

3efe7571c3ae2b64 245618f8e45ff4f79327627b474
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :6          100%           6:6     stress-ng.fpunch.fail

since the failure is persistent, just report what we observed in our tests FYI.


kernel test robot noticed "stress-ng.fpunch.fail" on:

commit: 245618f8e45ff4f79327627b474b563da71c2c75 ("block: protect wbt_lat_usec using q->elevator_lock")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

[test failed on linus/master      b36ddb9210e6812eb1c86ad46b66cc46aa193487]
[test failed on linux-next/master 8566fc3b96539e3235909d6bdda198e1282beaed]
[test failed on fix commit        9730763f4756e32520cb86778331465e8d063a8f]

in testcase: stress-ng
version: stress-ng-x86_64-1c71921fd-1_20250212
with following parameters:

	nr_threads: 100%
	disk: 1HDD
	testtime: 60s
	fs: xfs
	test: fpunch
	cpufreq_governor: performance



config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202505221030.760980df-lkp@intel.com

2025-03-20 08:33:52 mkdir -p /mnt/stress-ng
2025-03-20 08:33:52 mount /dev/sdc1 /mnt/stress-ng
2025-03-20 08:33:52 cd /mnt/stress-ng
  File: "/mnt/stress-ng"
    ID: 82100000000 Namelen: 255     Type: xfs
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 78604800   Free: 78518242   Available: 78518242
Inodes: Total: 157286400  Free: 157286397
2025-03-20 08:33:52 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128
stress-ng: info:  [4680] setting to a 1 min run per stressor
stress-ng: info:  [4680] dispatching hogs: 128 fpunch
stress-ng: info:  [4680] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
stress-ng: warn:  [4680] metrics-check: all bogo-op counters are zero, data may be incorrect
stress-ng: metrc: [4680] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
stress-ng: metrc: [4680]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
stress-ng: metrc: [4680] fpunch                0    557.92      0.40     19.56         0.00           0.00         0.03          3180
stress-ng: metrc: [4680] miscellaneous metrics:
stress-ng: metrc: [4680] fpunch              2049.12 extents per file (geometric mean of 128 instances)
stress-ng: info:  [4680] for a 620.45s run time:
stress-ng: info:  [4680]   79418.05s available CPU time
stress-ng: info:  [4680]       0.40s user time   (  0.00%)
stress-ng: info:  [4680]      19.59s system time (  0.02%)
stress-ng: info:  [4680]      19.99s total time  (  0.03%)
stress-ng: info:  [4680] load average: 250.69 349.62 213.80
stress-ng: info:  [4680] skipped: 0
stress-ng: info:  [4680] passed: 128: fpunch (128)
stress-ng: info:  [4680] failed: 0
stress-ng: info:  [4680] metrics untrustworthy: 0
stress-ng: info:  [4680] successful run completed in 10 mins, 20.45 secs


we don't observe any abnormal output in dmesg. below is an example from parent
commit.

2025-03-20 09:12:39 mkdir -p /mnt/stress-ng
2025-03-20 09:12:39 mount /dev/sdc1 /mnt/stress-ng
2025-03-20 09:12:39 cd /mnt/stress-ng
  File: "/mnt/stress-ng"
    ID: 82100000000 Namelen: 255     Type: xfs
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 78604800   Free: 78518242   Available: 78518242
Inodes: Total: 157286400  Free: 157286397
2025-03-20 09:12:39 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128
stress-ng: info:  [4689] setting to a 1 min run per stressor
stress-ng: info:  [4689] dispatching hogs: 128 fpunch
stress-ng: info:  [4689] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
stress-ng: metrc: [4689] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
stress-ng: metrc: [4689]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
stress-ng: metrc: [4689] fpunch             1166     60.31      0.11     34.66        19.33          33.54         0.45          3164
stress-ng: metrc: [4689] miscellaneous metrics:
stress-ng: metrc: [4689] fpunch              2051.97 extents per file (geometric mean of 128 instances)
stress-ng: info:  [4689] for a 60.91s run time:
stress-ng: info:  [4689]    7796.93s available CPU time
stress-ng: info:  [4689]       0.11s user time   (  0.00%)
stress-ng: info:  [4689]      34.68s system time (  0.44%)
stress-ng: info:  [4689]      34.79s total time  (  0.45%)
stress-ng: info:  [4689] load average: 325.78 93.83 32.28
stress-ng: info:  [4689] skipped: 0
stress-ng: info:  [4689] passed: 128: fpunch (128)
stress-ng: info:  [4689] failed: 0
stress-ng: info:  [4689] metrics untrustworthy: 0
stress-ng: info:  [4689] successful run completed in 1 min


from above, parent can finish run in 1 min, then has "bogo ops" and "bogo ops/s"

for 245618f8e4, the test seems run much longer, and the results for "bogo ops"
and "bogo ops/s" are all 0.



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250522/202505221030.760980df-lkp@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail
  2025-05-22  2:29 [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail kernel test robot
@ 2025-05-22 12:37 ` Nilay Shroff
  2025-05-29  1:52   ` Oliver Sang
  0 siblings, 1 reply; 6+ messages in thread
From: Nilay Shroff @ 2025-05-22 12:37 UTC (permalink / raw)
  To: kernel test robot
  Cc: oe-lkp, lkp, linux-kernel, Jens Axboe, Christoph Hellwig,
	Hannes Reinecke, Ming Lei, cgroups, linux-block



On 5/22/25 7:59 AM, kernel test robot wrote:
> 
> 
> Hello,
> 
> 
> we don't have enough knowledge if this is a kernel issue or test case issue.
> 
> =========================================================================================
> tbox_group/testcase/rootfs/kconfig/compiler/nr_threads/disk/testtime/fs/test/cpufreq_governor:
>   lkp-icl-2sp4/stress-ng/debian-12-x86_64-20240206.cgz/x86_64-rhel-9.4/gcc-12/100%/1HDD/60s/xfs/fpunch/performance
> 
> 3efe7571c3ae2b64 245618f8e45ff4f79327627b474
> ---------------- ---------------------------
>        fail:runs  %reproduction    fail:runs
>            |             |             |
>            :6          100%           6:6     stress-ng.fpunch.fail
> 
> since the failure is persistent, just report what we observed in our tests FYI.
> 
> 
> kernel test robot noticed "stress-ng.fpunch.fail" on:
> 
> commit: 245618f8e45ff4f79327627b474b563da71c2c75 ("block: protect wbt_lat_usec using q->elevator_lock")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> [test failed on linus/master      b36ddb9210e6812eb1c86ad46b66cc46aa193487]
> [test failed on linux-next/master 8566fc3b96539e3235909d6bdda198e1282beaed]
> [test failed on fix commit        9730763f4756e32520cb86778331465e8d063a8f]
> 
> in testcase: stress-ng
> version: stress-ng-x86_64-1c71921fd-1_20250212
> with following parameters:
> 
> 	nr_threads: 100%
> 	disk: 1HDD
> 	testtime: 60s
> 	fs: xfs
> 	test: fpunch
> 	cpufreq_governor: performance
> 
> 
> 
> config: x86_64-rhel-9.4
> compiler: gcc-12
> test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory
> 
> (please refer to attached dmesg/kmsg for entire log/backtrace)
> 
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@intel.com>
> | Closes: https://lore.kernel.org/oe-lkp/202505221030.760980df-lkp@intel.com
> 
> 2025-03-20 08:33:52 mkdir -p /mnt/stress-ng
> 2025-03-20 08:33:52 mount /dev/sdc1 /mnt/stress-ng
> 2025-03-20 08:33:52 cd /mnt/stress-ng
>   File: "/mnt/stress-ng"
>     ID: 82100000000 Namelen: 255     Type: xfs
> Block size: 4096       Fundamental block size: 4096
> Blocks: Total: 78604800   Free: 78518242   Available: 78518242
> Inodes: Total: 157286400  Free: 157286397
> 2025-03-20 08:33:52 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128
> stress-ng: info:  [4680] setting to a 1 min run per stressor
> stress-ng: info:  [4680] dispatching hogs: 128 fpunch
> stress-ng: info:  [4680] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
> stress-ng: warn:  [4680] metrics-check: all bogo-op counters are zero, data may be incorrect
> stress-ng: metrc: [4680] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
> stress-ng: metrc: [4680]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
> stress-ng: metrc: [4680] fpunch                0    557.92      0.40     19.56         0.00           0.00         0.03          3180
> stress-ng: metrc: [4680] miscellaneous metrics:
> stress-ng: metrc: [4680] fpunch              2049.12 extents per file (geometric mean of 128 instances)
> stress-ng: info:  [4680] for a 620.45s run time:
> stress-ng: info:  [4680]   79418.05s available CPU time
> stress-ng: info:  [4680]       0.40s user time   (  0.00%)
> stress-ng: info:  [4680]      19.59s system time (  0.02%)
> stress-ng: info:  [4680]      19.99s total time  (  0.03%)
> stress-ng: info:  [4680] load average: 250.69 349.62 213.80
> stress-ng: info:  [4680] skipped: 0
> stress-ng: info:  [4680] passed: 128: fpunch (128)
> stress-ng: info:  [4680] failed: 0
> stress-ng: info:  [4680] metrics untrustworthy: 0
> stress-ng: info:  [4680] successful run completed in 10 mins, 20.45 secs
> 
> 
> we don't observe any abnormal output in dmesg. below is an example from parent
> commit.
> 
> 2025-03-20 09:12:39 mkdir -p /mnt/stress-ng
> 2025-03-20 09:12:39 mount /dev/sdc1 /mnt/stress-ng
> 2025-03-20 09:12:39 cd /mnt/stress-ng
>   File: "/mnt/stress-ng"
>     ID: 82100000000 Namelen: 255     Type: xfs
> Block size: 4096       Fundamental block size: 4096
> Blocks: Total: 78604800   Free: 78518242   Available: 78518242
> Inodes: Total: 157286400  Free: 157286397
> 2025-03-20 09:12:39 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128
> stress-ng: info:  [4689] setting to a 1 min run per stressor
> stress-ng: info:  [4689] dispatching hogs: 128 fpunch
> stress-ng: info:  [4689] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
> stress-ng: metrc: [4689] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
> stress-ng: metrc: [4689]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
> stress-ng: metrc: [4689] fpunch             1166     60.31      0.11     34.66        19.33          33.54         0.45          3164
> stress-ng: metrc: [4689] miscellaneous metrics:
> stress-ng: metrc: [4689] fpunch              2051.97 extents per file (geometric mean of 128 instances)
> stress-ng: info:  [4689] for a 60.91s run time:
> stress-ng: info:  [4689]    7796.93s available CPU time
> stress-ng: info:  [4689]       0.11s user time   (  0.00%)
> stress-ng: info:  [4689]      34.68s system time (  0.44%)
> stress-ng: info:  [4689]      34.79s total time  (  0.45%)
> stress-ng: info:  [4689] load average: 325.78 93.83 32.28
> stress-ng: info:  [4689] skipped: 0
> stress-ng: info:  [4689] passed: 128: fpunch (128)
> stress-ng: info:  [4689] failed: 0
> stress-ng: info:  [4689] metrics untrustworthy: 0
> stress-ng: info:  [4689] successful run completed in 1 min
> 
> 
> from above, parent can finish run in 1 min, then has "bogo ops" and "bogo ops/s"
> 
> for 245618f8e4, the test seems run much longer, and the results for "bogo ops"
> and "bogo ops/s" are all 0.
> 
> 
> 
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20250522/202505221030.760980df-lkp@intel.com
> 

I tried reproducing this issue but I couldn't recreate it. Is it possible
for you to run this test on your setup using stress-ng option "--iostat 1"
as shown below ?

# stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128 --iostat 1

If you can run test with above option then please collect logs and share it.
That might help to further debug this.

Thanks,
--Nilay


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail
  2025-05-22 12:37 ` Nilay Shroff
@ 2025-05-29  1:52   ` Oliver Sang
  2025-05-30 14:01     ` Nilay Shroff
  0 siblings, 1 reply; 6+ messages in thread
From: Oliver Sang @ 2025-05-29  1:52 UTC (permalink / raw)
  To: Nilay Shroff
  Cc: oe-lkp, lkp, linux-kernel, Jens Axboe, Christoph Hellwig,
	Hannes Reinecke, Ming Lei, cgroups, linux-block, oliver.sang

[-- Attachment #1: Type: text/plain, Size: 3265 bytes --]

hi, Nilay,

sorry for late.

On Thu, May 22, 2025 at 06:07:21PM +0530, Nilay Shroff wrote:
> 

[...]

> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <oliver.sang@intel.com>
> > | Closes: https://lore.kernel.org/oe-lkp/202505221030.760980df-lkp@intel.com
> > 
> > 2025-03-20 08:33:52 mkdir -p /mnt/stress-ng
> > 2025-03-20 08:33:52 mount /dev/sdc1 /mnt/stress-ng
> > 2025-03-20 08:33:52 cd /mnt/stress-ng
> >   File: "/mnt/stress-ng"
> >     ID: 82100000000 Namelen: 255     Type: xfs
> > Block size: 4096       Fundamental block size: 4096
> > Blocks: Total: 78604800   Free: 78518242   Available: 78518242
> > Inodes: Total: 157286400  Free: 157286397
> > 2025-03-20 08:33:52 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128
> > stress-ng: info:  [4680] setting to a 1 min run per stressor
> > stress-ng: info:  [4680] dispatching hogs: 128 fpunch
> > stress-ng: info:  [4680] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
> > stress-ng: warn:  [4680] metrics-check: all bogo-op counters are zero, data may be incorrect
> > stress-ng: metrc: [4680] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
> > stress-ng: metrc: [4680]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
> > stress-ng: metrc: [4680] fpunch                0    557.92      0.40     19.56         0.00           0.00         0.03          3180
> > stress-ng: metrc: [4680] miscellaneous metrics:
> > stress-ng: metrc: [4680] fpunch              2049.12 extents per file (geometric mean of 128 instances)
> > stress-ng: info:  [4680] for a 620.45s run time:
> > stress-ng: info:  [4680]   79418.05s available CPU time
> > stress-ng: info:  [4680]       0.40s user time   (  0.00%)
> > stress-ng: info:  [4680]      19.59s system time (  0.02%)
> > stress-ng: info:  [4680]      19.99s total time  (  0.03%)
> > stress-ng: info:  [4680] load average: 250.69 349.62 213.80
> > stress-ng: info:  [4680] skipped: 0
> > stress-ng: info:  [4680] passed: 128: fpunch (128)
> > stress-ng: info:  [4680] failed: 0
> > stress-ng: info:  [4680] metrics untrustworthy: 0
> > stress-ng: info:  [4680] successful run completed in 10 mins, 20.45 secs
> > 

[...]

> > 
> > The kernel config and materials to reproduce are available at:
> > https://download.01.org/0day-ci/archive/20250522/202505221030.760980df-lkp@intel.com
> > 
> 
> I tried reproducing this issue but I couldn't recreate it. Is it possible
> for you to run this test on your setup using stress-ng option "--iostat 1"
> as shown below ?
> 
> # stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128 --iostat 1
> 
> If you can run test with above option then please collect logs and share it.
> That might help to further debug this.

the log is attached as stress-ng-245618f8e4.
also attached the dmesg-245618f8e4.xz.

another log from parent is attached as stress-ng-3efe7571c3.

> 
> Thanks,
> --Nilay
> 

[-- Attachment #2: stress-ng-3efe7571c3 --]
[-- Type: text/plain, Size: 7901 bytes --]

2025-05-28 08:28:57 mkdir -p /mnt/stress-ng
2025-05-28 08:28:57 mount /dev/sdd1 /mnt/stress-ng
2025-05-28 08:28:57 cd /mnt/stress-ng
  File: "/mnt/stress-ng"
    ID: 83100000000 Namelen: 255     Type: xfs
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 78604800   Free: 78518242   Available: 78518242
Inodes: Total: 157286400  Free: 157286397
2025-05-28 08:28:57 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128 --iostat 1
stress-ng: info:  [4693] setting to a 1 min run per stressor
stress-ng: info:  [4693] dispatching hogs: 128 fpunch
stress-ng: info:  [4693] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
stress-ng: info:  [4694] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4694] iostat:       0     9224    31656        0     2291     7218        0
stress-ng: info:  [4694] iostat:       0        0    35688        0        0     7774        0
stress-ng: info:  [4694] iostat:       0        0    33008        0        0     7139        0
stress-ng: info:  [4694] iostat:       0        0    34384        0        0     7532        0
stress-ng: info:  [4694] iostat:       0        0    31388        0        0     6875        0
stress-ng: info:  [4694] iostat:       0        0    35068        0        0     7565        0
stress-ng: info:  [4694] iostat:       0        0    35344        0        0     7611        0
stress-ng: info:  [4694] iostat:       0        0    34588        0        0     7577        0
stress-ng: info:  [4694] iostat:       0        0    33992        0        0     7356        0
stress-ng: info:  [4694] iostat:       0        0    35236        0        0     7671        0
stress-ng: info:  [4694] iostat:       0        0    36612        0        0     7959        0
stress-ng: info:  [4694] iostat:       0        0    31496        0        0     6923        0
stress-ng: info:  [4694] iostat:       0        0    32492        0        0     7083        0
stress-ng: info:  [4694] iostat:       0        0    34208        0        0     7417        0
stress-ng: info:  [4694] iostat:       0        0    35736        0        0     7693        0
stress-ng: info:  [4694] iostat:       0        0    30032        0        0     6639        0
stress-ng: info:  [4694] iostat:       0        0    30728        0        0     6913        0
stress-ng: info:  [4694] iostat:       0        0    31784        0        0     7133        0
stress-ng: info:  [4694] iostat:       0        0    35504        0        0     7782        0
stress-ng: info:  [4694] iostat:       0        0    34576        0        0     7624        0
stress-ng: info:  [4694] iostat:       0        0    31760        0        0     7082        0
stress-ng: info:  [4694] iostat:       0        0    36208        0        0     7837        0
stress-ng: info:  [4694] iostat:       0        0    36324        0        0     7830        0
stress-ng: info:  [4694] iostat:       0       16    33700        0        4     7415        0
stress-ng: info:  [4694] iostat:       0        0    33504        0        0     7270        0
stress-ng: info:  [4694] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4694] iostat:       0        0    30888        0        0     6675        0
stress-ng: info:  [4694] iostat:       0       28    30928        0        7     6721        0
stress-ng: info:  [4694] iostat:       0       32    31392        0        8     6845        0
stress-ng: info:  [4694] iostat:       0       84    26952        0       21     5864        0
stress-ng: info:  [4694] iostat:       0        0    33064        0        0     6379        0
stress-ng: info:  [4694] iostat:       0      100    23328        0       25     5079        0
stress-ng: info:  [4694] iostat:       0      592    13208        0      148     2852        0
stress-ng: info:  [4694] iostat:       0      924    10704        0      231     2301        0
stress-ng: info:  [4694] iostat:       0     1164     7980        0      291     1742        0
stress-ng: info:  [4694] iostat:       0     1272     6024        0      318     1327        0
stress-ng: info:  [4694] iostat:       0     1464     5344        0      366     1222        0
stress-ng: info:  [4694] iostat:       0     1528     4756        0      382     1132        0
stress-ng: info:  [4694] iostat:       0     1248     2964        0      312      689        0
stress-ng: info:  [4694] iostat:       0     1808     3700        0      452      884        0
stress-ng: info:  [4694] iostat:       0     1404     2312        0      351      560        0
stress-ng: info:  [4694] iostat:       0     1636     2280        0      407      558        0
stress-ng: info:  [4694] iostat:       0      948     5788        0      237      404        0
stress-ng: info:  [4694] iostat:       0     1632     3640        0      408      536        0
stress-ng: info:  [4694] iostat:       0     1720     2084        0      428      515        0
stress-ng: info:  [4694] iostat:       0     1952     2464        0      488      614        0
stress-ng: info:  [4694] iostat:       0     1388     1588        0      347      397        0
stress-ng: info:  [4694] iostat:       0     1416     1604        0      354      401        0
stress-ng: info:  [4694] iostat:       0     1264     1408        0      316      351        0
stress-ng: info:  [4694] iostat:       0     1344     1356        0      336      339        0
stress-ng: info:  [4694] iostat:       0     1280     1276        0      320      318        0
stress-ng: info:  [4694] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4694] iostat:       0     1892     1908        0      473      477        0
stress-ng: info:  [4694] iostat:       0     2020     1944        0      505      484        0
stress-ng: info:  [4694] iostat:       0     1644     1580        0      411      395        0
stress-ng: info:  [4694] iostat:       0     1660     1644        0      415      410        0
stress-ng: info:  [4694] iostat:       0     1508     1520        0      377      380        0
stress-ng: info:  [4694] iostat:       0     1276     1304        0      319      326        0
stress-ng: info:  [4694] iostat:       0     1808     1808        0      452      451        0
stress-ng: info:  [4694] iostat:       0     1796     1760        0      449      437        0
stress-ng: info:  [4694] iostat:       0     1360     1364        0      340      340        0
stress-ng: info:  [4694] iostat:       0     1240     3932        0      310      316        0
stress-ng: metrc: [4693] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
stress-ng: metrc: [4693]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
stress-ng: metrc: [4693] fpunch             1156     60.17      0.12     34.06        19.21          33.83         0.44          3196
stress-ng: metrc: [4693] miscellaneous metrics:
stress-ng: metrc: [4693] fpunch              2051.98 extents per file (geometric mean of 128 instances)
stress-ng: info:  [4693] for a 60.84s run time:
stress-ng: info:  [4693]    7787.90s available CPU time
stress-ng: info:  [4693]       0.11s user time   (  0.00%)
stress-ng: info:  [4693]      34.08s system time (  0.44%)
stress-ng: info:  [4693]      34.19s total time  (  0.44%)
stress-ng: info:  [4693] load average: 325.30 93.66 32.22
stress-ng: info:  [4693] skipped: 0
stress-ng: info:  [4693] passed: 128: fpunch (128)
stress-ng: info:  [4693] failed: 0
stress-ng: info:  [4693] metrics untrustworthy: 0
stress-ng: info:  [4693] successful run completed in 1 min

[-- Attachment #3: stress-ng-245618f8e4 --]
[-- Type: text/plain, Size: 63111 bytes --]

2025-05-28 08:15:55 mkdir -p /mnt/stress-ng
2025-05-28 08:15:55 mount /dev/sdd1 /mnt/stress-ng
2025-05-28 08:15:55 cd /mnt/stress-ng
  File: "/mnt/stress-ng"
    ID: 83100000000 Namelen: 255     Type: xfs
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 78604800   Free: 78518242   Available: 78518242
Inodes: Total: 157286400  Free: 157286397
2025-05-28 08:15:55 stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128 --iostat 1
stress-ng: info:  [4680] setting to a 1 min run per stressor
stress-ng: info:  [4680] dispatching hogs: 128 fpunch
stress-ng: info:  [4680] note: /proc/sys/kernel/sched_autogroup_enabled is 1 and this can impact scheduling throughput for processes not attached to a tty. Setting this to 0 may improve performance metrics
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0     9276    22196        0     2163     4719        0
stress-ng: info:  [4682] iostat:       0       40    18372        0        9     3843        0
stress-ng: info:  [4682] iostat:       0        0    18688        0        0     3896        0
stress-ng: info:  [4682] iostat:       0        0    20924        0        0     4316        0
stress-ng: info:  [4682] iostat:       0        0     2752        0        0      588        0
stress-ng: info:  [4682] iostat:       0        0      296        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      296        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      164        0        0       36        0
stress-ng: info:  [4682] iostat:       0        0     2196        0        0      429        0
stress-ng: info:  [4682] iostat:       0        0    20536        0        0     4113        0
stress-ng: info:  [4682] iostat:       0        0    19496        0        0     4059        0
stress-ng: info:  [4682] iostat:       0        0     1836        0        0      401        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       57        0
stress-ng: info:  [4682] iostat:       0        0      180        0        0       40        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       76        0
stress-ng: info:  [4682] iostat:       0        0     7628        0        0     1542        0
stress-ng: info:  [4682] iostat:       0        0    10432        0        0     2119        0
stress-ng: info:  [4682] iostat:       0        0      312        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      264        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      952        0        0      199        0
stress-ng: info:  [4682] iostat:       0        0      760        0        0      169        0
stress-ng: info:  [4682] iostat:       0        0      684        0        0      150        0
stress-ng: info:  [4682] iostat:       0        0      556        0        0      121        0
stress-ng: info:  [4682] iostat:       0        0     3804        0        0      788        0
stress-ng: info:  [4682] iostat:       0        0    12196        0        0     2594        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      596        0        0      130        0
stress-ng: info:  [4682] iostat:       0        0      372        0        0       87        0
stress-ng: info:  [4682] iostat:       0        0     1080        0        0      221        0
stress-ng: info:  [4682] iostat:       0        0      412        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      888        0        0      137        0
stress-ng: info:  [4682] iostat:       0        0      592        0        0       62        0
stress-ng: info:  [4682] iostat:       0        0     3556        0        0      631        0
stress-ng: info:  [4682] iostat:       0        0      212        0        0       48        0
stress-ng: info:  [4682] iostat:       0        0      256        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0      260        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0      312        0        0       61        0
stress-ng: info:  [4682] iostat:       0        0     3292        0        0      654        0
stress-ng: info:  [4682] iostat:       0        0    11580        0        0     2268        0
stress-ng: info:  [4682] iostat:       0        0      524        0        0      114        0
stress-ng: info:  [4682] iostat:       0        0      740        0        0      150        0
stress-ng: info:  [4682] iostat:       0        0     1748        0        0      379        0
stress-ng: info:  [4682] iostat:       0        0      696        0        0      144        0
stress-ng: info:  [4682] iostat:       0        0      584        0        0      126        0
stress-ng: info:  [4682] iostat:       0        0      732        0        0      155        0
stress-ng: info:  [4682] iostat:       0        0      468        0        0      103        0
stress-ng: info:  [4682] iostat:       0        0    15108        0        0     3163        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      224        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0      240        0        0       55        0
stress-ng: info:  [4682] iostat:       0        0      228        0        0       46        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      764        0        0      155        0
stress-ng: info:  [4682] iostat:       0        0      228        0        0       47        0
stress-ng: info:  [4682] iostat:       0        0      428        0        0       93        0
stress-ng: info:  [4682] iostat:       0        0      292        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      256        0        0       53        0
stress-ng: info:  [4682] iostat:       0        0     8264        0        0     1656        0
stress-ng: info:  [4682] iostat:       0        0      864        0        0      109        0
stress-ng: info:  [4682] iostat:       0        0      168        0        0       38        0
stress-ng: info:  [4682] iostat:       0        0      412        0        0       86        0
stress-ng: info:  [4682] iostat:       0        0     5484        0        0      944        0
stress-ng: info:  [4682] iostat:       0        0    14428        0        0     2498        0
stress-ng: info:  [4682] iostat:       0        0      688        0        0      122        0
stress-ng: info:  [4682] iostat:       0        0      188        0        0       43        0
stress-ng: info:  [4682] iostat:       0        0      352        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0     4452        0        0      784        0
stress-ng: info:  [4682] iostat:       0        0    14364        0        0     2392        0
stress-ng: info:  [4682] iostat:       0        0      292        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      248        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0      404        0        0       77        0
stress-ng: info:  [4682] iostat:       0        0     1204        0        0      265        0
stress-ng: info:  [4682] iostat:       0        0      852        0        0      181        0
stress-ng: info:  [4682] iostat:       0        0      596        0        0      132        0
stress-ng: info:  [4682] iostat:       0        0     1684        0        0      364        0
stress-ng: info:  [4682] iostat:       0        0     7248        0        0     1481        0
stress-ng: info:  [4682] iostat:       0        0      484        0        0      104        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      304        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      596        0        0      132        0
stress-ng: info:  [4682] iostat:       0        0     5504        0        0     1099        0
stress-ng: info:  [4682] iostat:       0        0      684        0        0       75        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0       93        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      988        0        0      171        0
stress-ng: info:  [4682] iostat:       0        0     1440        0        0      181        0
stress-ng: info:  [4682] iostat:       0        0      292        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0      101        0
stress-ng: info:  [4682] iostat:       0        0    18332        0        0     3465        0
stress-ng: info:  [4682] iostat:       0        0    14380        0        0     2998        0
stress-ng: info:  [4682] iostat:       0        0      652        0        0      148        0
stress-ng: info:  [4682] iostat:       0        0      240        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0     6816        0        0     1163        0
stress-ng: info:  [4682] iostat:       0        0    15716        0        0     2803        0
stress-ng: info:  [4682] iostat:       0        0    14956        0        0     2787        0
stress-ng: info:  [4682] iostat:       0        0      396        0        0       87        0
stress-ng: info:  [4682] iostat:       0        0      288        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      460        0        0      101        0
stress-ng: info:  [4682] iostat:       0        0    11004        0        0     2076        0
stress-ng: info:  [4682] iostat:       0        0    13168        0        0     2765        0
stress-ng: info:  [4682] iostat:       0        0      256        0        0       55        0
stress-ng: info:  [4682] iostat:       0        0      288        0        0       66        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      392        0        0       76        0
stress-ng: info:  [4682] iostat:       0        0     5640        0        0     1164        0
stress-ng: info:  [4682] iostat:       0        0     1968        0        0      408        0
stress-ng: info:  [4682] iostat:       0        0      364        0        0       78        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       56        0
stress-ng: info:  [4682] iostat:       0        0     5540        0        0     1145        0
stress-ng: info:  [4682] iostat:       0        0    14612        0        0     2779        0
stress-ng: info:  [4682] iostat:       0        0      912        0        0       91        0
stress-ng: info:  [4682] iostat:       0        0      380        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0      356        0        0       81        0
stress-ng: info:  [4682] iostat:       0        0     8276        0        0     1498        0
stress-ng: info:  [4682] iostat:       0        0     3824        0        0      575        0
stress-ng: info:  [4682] iostat:       0        0      668        0        0       91        0
stress-ng: info:  [4682] iostat:       0        0      640        0        0       78        0
stress-ng: info:  [4682] iostat:       0        0      336        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0     8180        0        0     1376        0
stress-ng: info:  [4682] iostat:       0        0      564        0        0       96        0
stress-ng: info:  [4682] iostat:       0        0      612        0        0      102        0
stress-ng: info:  [4682] iostat:       0        0     1064        0        0      188        0
stress-ng: info:  [4682] iostat:       0        0    15204        0        0     2861        0
stress-ng: info:  [4682] iostat:       0        0      592        0        0      125        0
stress-ng: info:  [4682] iostat:       0        0      260        0        0       46        0
stress-ng: info:  [4682] iostat:       0        0      436        0        0       88        0
stress-ng: info:  [4682] iostat:       0        0     4804        0        0      950        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      404        0        0       87        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0      788        0        0      118        0
stress-ng: info:  [4682] iostat:       0        0     1148        0        0      205        0
stress-ng: info:  [4682] iostat:       0        0     1392        0        0      161        0
stress-ng: info:  [4682] iostat:       0        0      328        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0     7828        0        0     1659        0
stress-ng: info:  [4682] iostat:       0        0      408        0        0       90        0
stress-ng: info:  [4682] iostat:       0        0      332        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0     8712        0        0     1823        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      552        0        0      117        0
stress-ng: info:  [4682] iostat:       0        0     9336        0        0     1980        0
stress-ng: info:  [4682] iostat:       0        0    10048        0        0     2133        0
stress-ng: info:  [4682] iostat:       0        0      284        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      408        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      392        0        0       86        0
stress-ng: info:  [4682] iostat:       0        0    13184        0        0     2759        0
stress-ng: info:  [4682] iostat:       0        0      392        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      292        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0      440        0        0       96        0
stress-ng: info:  [4682] iostat:       0        0     3352        0        0      684        0
stress-ng: info:  [4682] iostat:       0        0      416        0        0       89        0
stress-ng: info:  [4682] iostat:       0        0      408        0        0       86        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      396        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0     8368        0        0     1428        0
stress-ng: info:  [4682] iostat:       0        0     6764        0        0     1161        0
stress-ng: info:  [4682] iostat:       0        0      540        0        0      105        0
stress-ng: info:  [4682] iostat:       0        0      360        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0     7964        0        0     1523        0
stress-ng: info:  [4682] iostat:       0        0     1312        0        0      231        0
stress-ng: info:  [4682] iostat:       0        0      752        0        0      101        0
stress-ng: info:  [4682] iostat:       0        0     6312        0        0     1055        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0      104        0
stress-ng: info:  [4682] iostat:       0        0     6364        0        0     1165        0
stress-ng: info:  [4682] iostat:       0        0    11932        0        0     2242        0
stress-ng: info:  [4682] iostat:       0        0      500        0        0      110        0
stress-ng: info:  [4682] iostat:       0        0      548        0        0      114        0
stress-ng: info:  [4682] iostat:       0        0     3584        0        0      618        0
stress-ng: info:  [4682] iostat:       0        0    17372        0        0     3538        0
stress-ng: info:  [4682] iostat:       0        0    16208        0        0     3242        0
stress-ng: info:  [4682] iostat:       0        0      496        0        0      109        0
stress-ng: info:  [4682] iostat:       0        0      316        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0      336        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0     7720        0        0     1479        0
stress-ng: info:  [4682] iostat:       0        0     2976        0        0      480        0
stress-ng: info:  [4682] iostat:       0        0      248        0        0       57        0
stress-ng: info:  [4682] iostat:       0        0      244        0        0       57        0
stress-ng: info:  [4682] iostat:       0        0     4396        0        0      818        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      592        0        0      130        0
stress-ng: info:  [4682] iostat:       0        0      672        0        0      142        0
stress-ng: info:  [4682] iostat:       0        0     3360        0        0      721        0
stress-ng: info:  [4682] iostat:       0        0     4376        0        0      894        0
stress-ng: info:  [4682] iostat:       0        0      688        0        0       88        0
stress-ng: info:  [4682] iostat:       0        0      828        0        0      115        0
stress-ng: info:  [4682] iostat:       0        0      536        0        0       92        0
stress-ng: info:  [4682] iostat:       0        0     4624        0        0      874        0
stress-ng: info:  [4682] iostat:       0        0     2328        0        0      345        0
stress-ng: info:  [4682] iostat:       0        0      560        0        0      109        0
stress-ng: info:  [4682] iostat:       0        0      184        0        0       39        0
stress-ng: info:  [4682] iostat:       0        0      376        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      760        0        0      158        0
stress-ng: info:  [4682] iostat:       0        0      400        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      612        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0     1268        0        0      165        0
stress-ng: info:  [4682] iostat:       0        0     7372        0        0     1392        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0      316        0        0       73        0
stress-ng: info:  [4682] iostat:       0        0      304        0        0       60        0
stress-ng: info:  [4682] iostat:       0        0      440        0        0       94        0
stress-ng: info:  [4682] iostat:       0        0     9220        0        0     1776        0
stress-ng: info:  [4682] iostat:       0        0      688        0        0      156        0
stress-ng: info:  [4682] iostat:       0        0      596        0        0      134        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0    10144        0        0     2156        0
stress-ng: info:  [4682] iostat:       0        0      608        0        0      127        0
stress-ng: info:  [4682] iostat:       0        0      400        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0      680        0        0      137        0
stress-ng: info:  [4682] iostat:       0        4    14916        0        1     3065        0
stress-ng: info:  [4682] iostat:       0        0      556        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      448        0        0       45        0
stress-ng: info:  [4682] iostat:       0        0      596        0        0       74        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       49        0
stress-ng: info:  [4682] iostat:       0        0     1396        0        0      251        0
stress-ng: info:  [4682] iostat:       0        0    11976        0        0     2310        0
stress-ng: info:  [4682] iostat:       0        0     9668        0        0     1636        0
stress-ng: info:  [4682] iostat:       0        0      296        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      232        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      260        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      460        0        0      105        0
stress-ng: info:  [4682] iostat:       0        0      160        0        0       40        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       81        0
stress-ng: info:  [4682] iostat:       0        0     3628        0        0      627        0
stress-ng: info:  [4682] iostat:       0        0     3808        0        0      762        0
stress-ng: info:  [4682] iostat:       0        0      540        0        0       62        0
stress-ng: info:  [4682] iostat:       0        0      516        0        0       62        0
stress-ng: info:  [4682] iostat:       0        0      228        0        0       53        0
stress-ng: info:  [4682] iostat:       0        0      680        0        0      107        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      528        0        0      102        0
stress-ng: info:  [4682] iostat:       0        0      664        0        0      140        0
stress-ng: info:  [4682] iostat:       0        0      212        0        0       49        0
stress-ng: info:  [4682] iostat:       0        0      572        0        0      133        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      248        0        0       54        0
stress-ng: info:  [4682] iostat:       0        0      452        0        0      100        0
stress-ng: info:  [4682] iostat:       0        0     6028        0        0     1171        0
stress-ng: info:  [4682] iostat:       0        0      452        0        0       96        0
stress-ng: info:  [4682] iostat:       0        0      200        0        0       44        0
stress-ng: info:  [4682] iostat:       0        0      304        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      376        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0      580        0        0      113        0
stress-ng: info:  [4682] iostat:       0        0      520        0        0       62        0
stress-ng: info:  [4682] iostat:       0        0      520        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      396        0        0       37        0
stress-ng: info:  [4682] iostat:       0        0      520        0        0      113        0
stress-ng: info:  [4682] iostat:       0        0      304        0        0       75        0
stress-ng: info:  [4682] iostat:       0        0      520        0        0      101        0
stress-ng: info:  [4682] iostat:       0        0      256        0        0       55        0
stress-ng: info:  [4682] iostat:       0        0     9284        0        0     1906        0
stress-ng: info:  [4682] iostat:       0        0     3176        0        0      633        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       69        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       70        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      416        0        0       92        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       70        0
stress-ng: info:  [4682] iostat:       0        0      612        0        0      141        0
stress-ng: info:  [4682] iostat:       0        4    11588        0        1     2451        0
stress-ng: info:  [4682] iostat:       0        0      548        0        0      119        0
stress-ng: info:  [4682] iostat:       0        0      648        0        0      131        0
stress-ng: info:  [4682] iostat:       0        0      488        0        0      104        0
stress-ng: info:  [4682] iostat:       0        0    11372        0        0     2354        0
stress-ng: info:  [4682] iostat:       0        0      436        0        0       96        0
stress-ng: info:  [4682] iostat:       0        0      360        0        0       72        0
stress-ng: info:  [4682] iostat:       0        0      340        0        0       70        0
stress-ng: info:  [4682] iostat:       0        0     3084        0        0      644        0
stress-ng: info:  [4682] iostat:       0        0     1408        0        0      294        0
stress-ng: info:  [4682] iostat:       0        0      528        0        0      109        0
stress-ng: info:  [4682] iostat:       0        0      320        0        0       72        0
stress-ng: info:  [4682] iostat:       0        0      244        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      436        0        0       91        0
stress-ng: info:  [4682] iostat:       0        0     7688        0        0     1388        0
stress-ng: info:  [4682] iostat:       0        0      416        0        0       88        0
stress-ng: info:  [4682] iostat:       0        0      268        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0      276        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       70        0
stress-ng: info:  [4682] iostat:       0        0      204        0        0       47        0
stress-ng: info:  [4682] iostat:       0        0      336        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      232        0        0       54        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0     2328        0        0      558        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       57        0
stress-ng: info:  [4682] iostat:       0        0      552        0        0      134        0
stress-ng: info:  [4682] iostat:       0        0      216        0        0       54        0
stress-ng: info:  [4682] iostat:       0        0     4192        0        0      970        0
stress-ng: info:  [4682] iostat:       0        0     1480        0        0      340        0
stress-ng: info:  [4682] iostat:       0        0      244        0        0       56        0
stress-ng: info:  [4682] iostat:       0        0      428        0        0      105        0
stress-ng: info:  [4682] iostat:       0        0     1076        0        0      248        0
stress-ng: info:  [4682] iostat:       0        0      428        0        0      102        0
stress-ng: info:  [4682] iostat:       0        0      232        0        0       54        0
stress-ng: info:  [4682] iostat:       0        0      284        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0     2780        0        0      651        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      184        0        0       44        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       54        0
stress-ng: info:  [4682] iostat:       0        0      420        0        0       94        0
stress-ng: info:  [4682] iostat:       0        0      396        0        0       88        0
stress-ng: info:  [4682] iostat:       0        0      468        0        0      111        0
stress-ng: info:  [4682] iostat:       0        0      376        0        0       76        0
stress-ng: info:  [4682] iostat:       0        0     2792        0        0      593        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       77        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0     3192        0        0      480        0
stress-ng: info:  [4682] iostat:       0        0     2716        0        0      566        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      288        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      388        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      324        0        0       70        0
stress-ng: info:  [4682] iostat:       0        0     6536        0        0     1335        0
stress-ng: info:  [4682] iostat:       0        0      312        0        0       78        0
stress-ng: info:  [4682] iostat:       0        0      244        0        0       51        0
stress-ng: info:  [4682] iostat:       0        0      304        0        0       76        0
stress-ng: info:  [4682] iostat:       0        0      456        0        0      110        0
stress-ng: info:  [4682] iostat:       0        0      544        0        0       71        0
stress-ng: info:  [4682] iostat:       0        0      228        0        0       55        0
stress-ng: info:  [4682] iostat:       0        0      604        0        0      148        0
stress-ng: info:  [4682] iostat:       0        0      572        0        0      116        0
stress-ng: info:  [4682] iostat:       0        0      584        0        0       62        0
stress-ng: info:  [4682] iostat:       0        0     1136        0        0      176        0
stress-ng: info:  [4682] iostat:       0        0      448        0        0       95        0
stress-ng: info:  [4682] iostat:       0        0      716        0        0      106        0
stress-ng: info:  [4682] iostat:       0        0      764        0        0      113        0
stress-ng: info:  [4682] iostat:       0        0      964        0        0      180        0
stress-ng: info:  [4682] iostat:       0        0      580        0        0      138        0
stress-ng: info:  [4682] iostat:       0        0      364        0        0       88        0
stress-ng: info:  [4682] iostat:       0        0      412        0        0      100        0
stress-ng: info:  [4682] iostat:       0        0      100        0        0       25        0
stress-ng: info:  [4682] iostat:       0        0      852        0        0      206        0
stress-ng: info:  [4682] iostat:       0        0      752        0        0      184        0
stress-ng: info:  [4682] iostat:       0        0      804        0        0      197        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      328        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0     1276        0        0      184        0
stress-ng: info:  [4682] iostat:       0        0      564        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      916        0        0      200        0
stress-ng: info:  [4682] iostat:       0        0      208        0        0       44        0
stress-ng: info:  [4682] iostat:       0        0     1296        0        0      171        0
stress-ng: info:  [4682] iostat:       0        0      444        0        0      103        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0      111        0
stress-ng: info:  [4682] iostat:       0        0      156        0        0       38        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       69        0
stress-ng: info:  [4682] iostat:       0        0      648        0        0      101        0
stress-ng: info:  [4682] iostat:       0        0     4848        0        0     1000        0
stress-ng: info:  [4682] iostat:       0        0      324        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      260        0        0       48        0
stress-ng: info:  [4682] iostat:       0        0      536        0        0      105        0
stress-ng: info:  [4682] iostat:       0        0      656        0        0      143        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0       96        0
stress-ng: info:  [4682] iostat:       0        0      744        0        0      153        0
stress-ng: info:  [4682] iostat:       0        0     3708        0        0      740        0
stress-ng: info:  [4682] iostat:       0        0     4940        0        0      988        0
stress-ng: info:  [4682] iostat:       0        0      512        0        0      118        0
stress-ng: info:  [4682] iostat:       0        0      700        0        0      132        0
stress-ng: info:  [4682] iostat:       0        0      680        0        0      144        0
stress-ng: info:  [4682] iostat:       0        0      364        0        0       77        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      316        0        0       72        0
stress-ng: info:  [4682] iostat:       0        0      384        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0     1644        0        0      329        0
stress-ng: info:  [4682] iostat:       0        0    13644        0        0     2826        0
stress-ng: info:  [4682] iostat:       0        0      704        0        0      148        0
stress-ng: info:  [4682] iostat:       0        0      852        0        0      177        0
stress-ng: info:  [4682] iostat:       0        0      824        0        0      169        0
stress-ng: info:  [4682] iostat:       0        0      736        0        0      162        0
stress-ng: info:  [4682] iostat:       0        0      744        0        0      153        0
stress-ng: info:  [4682] iostat:       0        0     1008        0        0      104        0
stress-ng: info:  [4682] iostat:       0        0      792        0        0      115        0
stress-ng: info:  [4682] iostat:       0        0      796        0        0      119        0
stress-ng: info:  [4682] iostat:       0        0      416        0        0       93        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0     1536        0        0      336        0
stress-ng: info:  [4682] iostat:       0        0     2132        0        0      489        0
stress-ng: info:  [4682] iostat:       0        0      220        0        0       40        0
stress-ng: info:  [4682] iostat:       0        0      396        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0       55        0
stress-ng: info:  [4682] iostat:       0        0      432        0        0       43        0
stress-ng: info:  [4682] iostat:       0        0      400        0        0       90        0
stress-ng: info:  [4682] iostat:       0        0      212        0        0       49        0
stress-ng: info:  [4682] iostat:       0        0      904        0        0      169        0
stress-ng: info:  [4682] iostat:       0        0     3364        0        0      785        0
stress-ng: info:  [4682] iostat:       0        0      284        0        0       66        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      168        0        0       37        0
stress-ng: info:  [4682] iostat:       0        0      312        0        0       76        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       57        0
stress-ng: info:  [4682] iostat:       0        0     1084        0        0      239        0
stress-ng: info:  [4682] iostat:       0        0      540        0        0      121        0
stress-ng: info:  [4682] iostat:       0        0      216        0        0       51        0
stress-ng: info:  [4682] iostat:       0        0      268        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0      140        0        0       31        0
stress-ng: info:  [4682] iostat:       0        0     1000        0        0      217        0
stress-ng: info:  [4682] iostat:       0        0     3872        0        0      797        0
stress-ng: info:  [4682] iostat:       0        0     8128        0        0     1610        0
stress-ng: info:  [4682] iostat:       0        0      312        0        0       73        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       56        0
stress-ng: info:  [4682] iostat:       0        0      380        0        0       90        0
stress-ng: info:  [4682] iostat:       0        0     1508        0        0      353        0
stress-ng: info:  [4682] iostat:       0        0      328        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      408        0        0       95        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      352        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      352        0        0       81        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      324        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0      352        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      176        0        0       40        0
stress-ng: info:  [4682] iostat:       0        0      144        0        0       32        0
stress-ng: info:  [4682] iostat:       0        0      192        0        0       48        0
stress-ng: info:  [4682] iostat:       0        0      208        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0      620        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      248        0        0       62        0
stress-ng: info:  [4682] iostat:       0        0      532        0        0       69        0
stress-ng: info:  [4682] iostat:       0        0      368        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      332        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      692        0        0       91        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       61        0
stress-ng: info:  [4682] iostat:       0        0      400        0        0       86        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       75        0
stress-ng: info:  [4682] iostat:       0        0      336        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      300        0        0       74        0
stress-ng: info:  [4682] iostat:       0        0      328        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0      352        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      320        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      332        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      312        0        0       78        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      312        0        0       78        0
stress-ng: info:  [4682] iostat:       0        0      344        0        0       80        0
stress-ng: info:  [4682] iostat:       0        0      328        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0      316        0        0       77        0
stress-ng: info:  [4682] iostat:       0        0      320        0        0       78        0
stress-ng: info:  [4682] iostat:       0        0      316        0        0       76        0
stress-ng: info:  [4682] iostat:       0        0      332        0        0       81        0
stress-ng: info:  [4682] iostat:       0        0      328        0        0       78        0
stress-ng: info:  [4682] iostat:       0        0      200        0        0       43        0
stress-ng: info:  [4682] iostat:       0        0      140        0        0       34        0
stress-ng: info:  [4682] iostat:       0        0      248        0        0       60        0
stress-ng: info:  [4682] iostat:       0        0      136        0        0       34        0
stress-ng: info:  [4682] iostat:       0        0      336        0        0       70        0
stress-ng: info:  [4682] iostat:       0        0      324        0        0       72        0
stress-ng: info:  [4682] iostat:       0        0      192        0        0       48        0
stress-ng: info:  [4682] iostat:       0        0      140        0        0       33        0
stress-ng: info:  [4682] iostat:       0        0      268        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      332        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0      396        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      452        0        0       90        0
stress-ng: info:  [4682] iostat:       0        0      316        0        0       71        0
stress-ng: info:  [4682] iostat:       0        0      592        0        0       81        0
stress-ng: info:  [4682] iostat:       0        0      348        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0      340        0        0       80        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      128        0        0       32        0
stress-ng: info:  [4682] iostat:       0        0      188        0        0       43        0
stress-ng: info:  [4682] iostat:       0        0      428        0        0       39        0
stress-ng: info:  [4682] iostat:       0        0      376        0        0       30        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0      284        0        0       51        0
stress-ng: info:  [4682] iostat:       0        0      392        0        0       77        0
stress-ng: info:  [4682] iostat:       0        0      304        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      624        0        0       77        0
stress-ng: info:  [4682] iostat:       0        0      452        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      424        0        0       36        0
stress-ng: info:  [4682] iostat:       0        0      184        0        0       37        0
stress-ng: info:  [4682] iostat:       0        0     2692        0        0      517        0
stress-ng: info:  [4682] iostat:       0        0      672        0        0       87        0
stress-ng: info:  [4682] iostat:       0        0      868        0        0       81        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       69        0
stress-ng: info:  [4682] iostat:       0        0      680        0        0      149        0
stress-ng: info:  [4682] iostat:       0        0      496        0        0      112        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0     2528        0        0      599        0
stress-ng: info:  [4682] iostat:       0        0     1348        0        0      332        0
stress-ng: info:  [4682] iostat:       0        0      200        0        0       49        0
stress-ng: info:  [4682] iostat:       0        0      180        0        0       41        0
stress-ng: info:  [4682] iostat:       0        0      124        0        0       30        0
stress-ng: info:  [4682] iostat:       0        0      168        0        0       42        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      180        0        0       43        0
stress-ng: info:  [4682] iostat:       0        0     3808        0        0      886        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       60        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       63        0
stress-ng: info:  [4682] iostat:       0        0      552        0        0      135        0
stress-ng: info:  [4682] iostat:       0        0      360        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      736        0        0      167        0
stress-ng: info:  [4682] iostat:       0        0      868        0        0      184        0
stress-ng: info:  [4682] iostat:       0        0      848        0        0      179        0
stress-ng: info:  [4682] iostat:       0        0      244        0        0       57        0
stress-ng: info:  [4682] iostat:       0        0      196        0        0       44        0
stress-ng: info:  [4682] iostat:       0        0      200        0        0       42        0
stress-ng: info:  [4682] iostat:       0        0     1276        0        0      273        0
stress-ng: info:  [4682] iostat:       0        0      436        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      544        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      648        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      600        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0     4492        0        0      937        0
stress-ng: info:  [4682] iostat:       0        0     4088        0        0      870        0
stress-ng: info:  [4682] iostat:       0        0      708        0        0       89        0
stress-ng: info:  [4682] iostat:       0        0      600        0        0       82        0
stress-ng: info:  [4682] iostat:       0        0     4268        0        0      818        0
stress-ng: info:  [4682] iostat:       0        0     4396        0        0      927        0
stress-ng: info:  [4682] iostat:       0        0      812        0        0      174        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      644        0        0      143        0
stress-ng: info:  [4682] iostat:       0        0     2772        0        0      573        0
stress-ng: info:  [4682] iostat:       0        0     4872        0        0     1020        0
stress-ng: info:  [4682] iostat:       0        0      832        0        0      176        0
stress-ng: info:  [4682] iostat:       0        0      512        0        0      118        0
stress-ng: info:  [4682] iostat:       0        0      492        0        0      115        0
stress-ng: info:  [4682] iostat:       0        0     7256        0        0     1453        0
stress-ng: info:  [4682] iostat:       0        0     1404        0        0      207        0
stress-ng: info:  [4682] iostat:       0        0     1408        0        0      200        0
stress-ng: info:  [4682] iostat:       0        0     1056        0        0      201        0
stress-ng: info:  [4682] iostat:       0        0     5932        0        0     1023        0
stress-ng: info:  [4682] iostat:       0        0      732        0        0      172        0
stress-ng: info:  [4682] iostat:       0        0      884        0        0      145        0
stress-ng: info:  [4682] iostat:       0        0      552        0        0      114        0
stress-ng: info:  [4682] iostat:       0        0     2268        0        0      456        0
stress-ng: info:  [4682] iostat:       0        0      168        0        0       42        0
stress-ng: info:  [4682] iostat:       0        0      360        0        0       85        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      508        0        0       46        0
stress-ng: info:  [4682] iostat:       0        0     4960        0        0      870        0
stress-ng: info:  [4682] iostat:       0        0      340        0        0       83        0
stress-ng: info:  [4682] iostat:       0        0      216        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0      328        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0     6420        0        0     1210        0
stress-ng: info:  [4682] iostat:       0        0      560        0        0       75        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      164        0        0       37        0
stress-ng: info:  [4682] iostat:       0        0      308        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      564        0        0      123        0
stress-ng: info:  [4682] iostat:       0        0      748        0        0      159        0
stress-ng: info:  [4682] iostat:       0        0      216        0        0       46        0
stress-ng: info:  [4682] iostat:       0        0     1056        0        0      120        0
stress-ng: info:  [4682] iostat:       0        0      332        0        0       49        0
stress-ng: info:  [4682] iostat:       0        0     2380        0        0      557        0
stress-ng: info:  [4682] iostat:       0        0      292        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      156        0        0       31        0
stress-ng: info:  [4682] iostat:       0        0      400        0        0       93        0
stress-ng: info:  [4682] iostat:       0        0      456        0        0      101        0
stress-ng: info:  [4682] iostat:       0        0     5448        0        0     1225        0
stress-ng: info:  [4682] iostat:       0        0     3408        0        0      708        0
stress-ng: info:  [4682] iostat:       0        0      184        0        0       44        0
stress-ng: info:  [4682] iostat:       0        0      472        0        0       39        0
stress-ng: info:  [4682] iostat:       0        0      680        0        0       88        0
stress-ng: info:  [4682] iostat:       0        0      436        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0     4468        0        0     1032        0
stress-ng: info:  [4682] iostat:       0        0      120        0        0       29        0
stress-ng: info:  [4682] iostat:       0        0      272        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0     3548        0        0      841        0
stress-ng: info:  [4682] iostat:       0        0      220        0        0       55        0
stress-ng: info:  [4682] iostat:       0        0      232        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0      264        0        0       59        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      208        0        0       48        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       68        0
stress-ng: info:  [4682] iostat:       0        0      100        0        0       25        0
stress-ng: info:  [4682] iostat:       0        0      212        0        0       47        0
stress-ng: info:  [4682] iostat:       0        0      800        0        0      128        0
stress-ng: info:  [4682] iostat:       0        0      244        0        0       52        0
stress-ng: info:  [4682] iostat:       0        0      644        0        0      135        0
stress-ng: info:  [4682] iostat:       0        0      428        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0     1192        0        0      128        0
stress-ng: info:  [4682] iostat:       0        0      276        0        0       51        0
stress-ng: info:  [4682] iostat:       0        0     2104        0        0      276        0
stress-ng: info:  [4682] iostat:       0        0      320        0        0       32        0
stress-ng: info:  [4682] iostat:       0        0      420        0        0       45        0
stress-ng: info:  [4682] iostat:       0        0     3532        0        0      184        0
stress-ng: info:  [4682] iostat:       0        0      208        0        0       46        0
stress-ng: info:  [4682] iostat:       0        0     2076        0        0      381        0
stress-ng: info:  [4682] iostat:       0        0      372        0        0       34        0
stress-ng: info:  [4682] iostat:       0        0      124        0        0       30        0
stress-ng: info:  [4682] iostat:       0        0      356        0        0       79        0
stress-ng: info:  [4682] iostat:       0        0      264        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      884        0        0       84        0
stress-ng: info:  [4682] iostat:       0        0      468        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0     1020        0        0      179        0
stress-ng: info:  [4682] iostat:       0        0     5312        0        0      939        0
stress-ng: info:  [4682] iostat:       0        0      228        0        0       51        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0      244        0        0       58        0
stress-ng: info:  [4682] iostat:       0        0      496        0        0       61        0
stress-ng: info:  [4682] iostat:       0        0      556        0        0       67        0
stress-ng: info:  [4682] iostat:       0        0     5764        0        0     1125        0
stress-ng: info:  [4682] iostat:       0        0      276        0        0       64        0
stress-ng: info:  [4682] iostat:       0        0      628        0        0       98        0
stress-ng: info:  [4682] iostat:       0        0      236        0        0       51        0
stress-ng: info:  [4682] iostat:       0        0      424        0        0       73        0
stress-ng: info:  [4682] iostat:       0        0     1196        0        0      169        0
stress-ng: info:  [4682] iostat:       0        0      520        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      264        0        0       56        0
stress-ng: info:  [4682] iostat:       0        0      208        0        0       47        0
stress-ng: info:  [4682] iostat:       0        0      752        0        0      164        0
stress-ng: info:  [4682] iostat:       0        0      340        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      840        0        0      139        0
stress-ng: info:  [4682] iostat:       0        0      336        0        0       65        0
stress-ng: info:  [4682] iostat:       0        0      536        0        0       66        0
stress-ng: info:  [4682] iostat:       0        0      628        0        0      145        0
stress-ng: info:  [4682] iostat:       0        0      900        0        0      131        0
stress-ng: info:  [4682] iostat:       0        0      552        0        0      102        0
stress-ng: info:  [4682] iostat:       0        0      528        0        0       61        0
stress-ng: info:  [4682] iostat:       0        0      280        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0     2004        0        0      366        0
stress-ng: info:  [4682] iostat:       0        0      600        0        0      124        0
stress-ng: info:  [4682] iostat:       0        0      812        0        0       98        0
stress-ng: info:  [4682] iostat: Inflght   Rd K/s   Wr K/s Dscd K/s     Rd/s     Wr/s   Dscd/s
stress-ng: info:  [4682] iostat:       0        0     1268        0        0      168        0
stress-ng: info:  [4682] iostat:       0        0      184        0        0       45        0
stress-ng: info:  [4682] iostat:       0        0      964        0        0      118        0
stress-ng: info:  [4682] iostat:       0        0     1308        0        0      244        0
stress-ng: info:  [4682] iostat:       0        0      192        0        0       45        0
stress-ng: info:  [4682] iostat:       0        0     1664        0        0      222        0
stress-ng: info:  [4682] iostat:       0        0      672        0        0       59        0
stress-ng: info:  [4682] iostat:       0        0      460        0        0       77        0
stress-ng: info:  [4682] iostat:       0        0      496        0        0       54        0
stress-ng: info:  [4682] iostat:       0        0     1696        0        0      262        0
stress-ng: info:  [4682] iostat:       0        0     1436        0        0      214        0
stress-ng: info:  [4682] iostat:       0        0      476        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0      740        0        0      116        0
stress-ng: info:  [4682] iostat:       0        0     2900        0        0      185        0
stress-ng: info:  [4682] iostat:       0        0     1028        0        0      225        0
stress-ng: info:  [4682] iostat:       0        0     1144        0        0      157        0
stress-ng: info:  [4682] iostat:       0        0      200        0        0       50        0
stress-ng: info:  [4682] iostat:       0        0     1600        0        0      246        0
stress-ng: warn:  [4680] metrics-check: all bogo-op counters are zero, data may be incorrect
stress-ng: metrc: [4680] stressor       bogo ops real time  usr time  sys time   bogo ops/s     bogo ops/s CPU used per       RSS Max
stress-ng: metrc: [4680]                           (secs)    (secs)    (secs)   (real time) (usr+sys time) instance (%)          (KB)
stress-ng: metrc: [4680] fpunch                0    558.55      0.36     18.96         0.00           0.00         0.03          3192
stress-ng: metrc: [4680] miscellaneous metrics:
stress-ng: metrc: [4680] fpunch              2049.04 extents per file (geometric mean of 128 instances)
stress-ng: info:  [4680] for a 618.87s run time:
stress-ng: info:  [4680]   79215.33s available CPU time
stress-ng: info:  [4680]       0.36s user time   (  0.00%)
stress-ng: info:  [4680]      18.99s system time (  0.02%)
stress-ng: info:  [4680]      19.35s total time  (  0.02%)
stress-ng: info:  [4680] load average: 297.48 362.87 215.33
stress-ng: info:  [4680] skipped: 0
stress-ng: info:  [4680] passed: 128: fpunch (128)
stress-ng: info:  [4680] failed: 0
stress-ng: info:  [4680] metrics untrustworthy: 0
stress-ng: info:  [4680] successful run completed in 10 mins, 18.87 secs

[-- Attachment #4: dmesg-245618f8e4.xz --]
[-- Type: application/x-xz, Size: 37124 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail
  2025-05-29  1:52   ` Oliver Sang
@ 2025-05-30 14:01     ` Nilay Shroff
  2025-07-10  8:40       ` Oliver Sang
  0 siblings, 1 reply; 6+ messages in thread
From: Nilay Shroff @ 2025-05-30 14:01 UTC (permalink / raw)
  To: Oliver Sang
  Cc: oe-lkp, lkp, linux-kernel, Jens Axboe, Christoph Hellwig,
	Hannes Reinecke, Ming Lei, cgroups, linux-block



On 5/29/25 7:22 AM, Oliver Sang wrote:
> hi, Nilay,
> 
> sorry for late.
No worries... 

[...]
>>>
>>> The kernel config and materials to reproduce are available at:
>>> https://download.01.org/0day-ci/archive/20250522/202505221030.760980df-lkp@intel.com
>>>
>>
>> I tried reproducing this issue but I couldn't recreate it. Is it possible
>> for you to run this test on your setup using stress-ng option "--iostat 1"
>> as shown below ?
>>
>> # stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128 --iostat 1
>>
>> If you can run test with above option then please collect logs and share it.
>> That might help to further debug this.
> 
> the log is attached as stress-ng-245618f8e4.
> also attached the dmesg-245618f8e4.xz.
> 
> another log from parent is attached as stress-ng-3efe7571c3.
> 
Thanks for trying out --iostat option and sharing logs. I looked through logs and it seems 
that (my guess) in case of failures (i.e. bogo ops reported as 0) disk read operations are
either blocked or never completed. However it might be useful to further debug this. 
Unfortunately, I tried hard but failed to recreate on my setup, so need your help. 

I have few follow up questions:
1. Are you able to recreate this issue even on the recent upstream kernel?
2. Did you try formatting the disk using ext4 instead of xfs?

Anyways, is it possible to rerun test with following options to further analyze it?
# stress-ng --timeout 60 --times --metrics --verify --no-rand-seed --fpunch 128 --verbose --klog-check --stressor-time --status 1

Above options shall help generate verbose output as well as log why stressors are not exiting 
after timeout of 60 seconds. Moreover, it'd be helpful if you can also repeat the test specifying 
"--fpunch 1". Just wanted to see whether limiting stressors to only 1 recreate the issue. 

Thanks,
--Nilay


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail
  2025-05-30 14:01     ` Nilay Shroff
@ 2025-07-10  8:40       ` Oliver Sang
  2025-07-10  9:50         ` Nilay Shroff
  0 siblings, 1 reply; 6+ messages in thread
From: Oliver Sang @ 2025-07-10  8:40 UTC (permalink / raw)
  To: Nilay Shroff
  Cc: oe-lkp, lkp, linux-kernel, Jens Axboe, Christoph Hellwig,
	Hannes Reinecke, Ming Lei, cgroups, linux-block, oliver.sang

hi, Nilay,

really sorry for long delay. we are blocked by other issues for a long time.

for this report, the test machine is redeployed for other usages, and I tried
the same stress-ng fpunch test on another Ice Lake server, cannot reproduce the
issue again on 245618f8e4 or latest mainline.

seems the previous test machine has some problem. sorry for our env problem.


On Fri, May 30, 2025 at 07:31:28PM +0530, Nilay Shroff wrote:
> 
> 
> On 5/29/25 7:22 AM, Oliver Sang wrote:
> > hi, Nilay,
> > 
> > sorry for late.
> No worries... 
> 
> [...]
> >>>
> >>> The kernel config and materials to reproduce are available at:
> >>> https://download.01.org/0day-ci/archive/20250522/202505221030.760980df-lkp@intel.com
> >>>
> >>
> >> I tried reproducing this issue but I couldn't recreate it. Is it possible
> >> for you to run this test on your setup using stress-ng option "--iostat 1"
> >> as shown below ?
> >>
> >> # stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --fpunch 128 --iostat 1
> >>
> >> If you can run test with above option then please collect logs and share it.
> >> That might help to further debug this.
> > 
> > the log is attached as stress-ng-245618f8e4.
> > also attached the dmesg-245618f8e4.xz.
> > 
> > another log from parent is attached as stress-ng-3efe7571c3.
> > 
> Thanks for trying out --iostat option and sharing logs. I looked through logs and it seems 
> that (my guess) in case of failures (i.e. bogo ops reported as 0) disk read operations are
> either blocked or never completed. However it might be useful to further debug this. 
> Unfortunately, I tried hard but failed to recreate on my setup, so need your help. 
> 
> I have few follow up questions:
> 1. Are you able to recreate this issue even on the recent upstream kernel?
> 2. Did you try formatting the disk using ext4 instead of xfs?
> 
> Anyways, is it possible to rerun test with following options to further analyze it?
> # stress-ng --timeout 60 --times --metrics --verify --no-rand-seed --fpunch 128 --verbose --klog-check --stressor-time --status 1
> 
> Above options shall help generate verbose output as well as log why stressors are not exiting 
> after timeout of 60 seconds. Moreover, it'd be helpful if you can also repeat the test specifying 
> "--fpunch 1". Just wanted to see whether limiting stressors to only 1 recreate the issue. 
> 
> Thanks,
> --Nilay
> 
> 

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail
  2025-07-10  8:40       ` Oliver Sang
@ 2025-07-10  9:50         ` Nilay Shroff
  0 siblings, 0 replies; 6+ messages in thread
From: Nilay Shroff @ 2025-07-10  9:50 UTC (permalink / raw)
  To: Oliver Sang
  Cc: oe-lkp, lkp, linux-kernel, Jens Axboe, Christoph Hellwig,
	Hannes Reinecke, Ming Lei, cgroups, linux-block



On 7/10/25 2:10 PM, Oliver Sang wrote:
> hi, Nilay,
> 
> really sorry for long delay. we are blocked by other issues for a long time.
> 
> for this report, the test machine is redeployed for other usages, and I tried
> the same stress-ng fpunch test on another Ice Lake server, cannot reproduce the
> issue again on 245618f8e4 or latest mainline.
> 
> seems the previous test machine has some problem. sorry for our env problem.

Okay, no issues... glad to know that you're no longer encountering the same issue.

Thanks,
--Nilay

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2025-07-10  9:50 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-05-22  2:29 [linus:master] [block] 245618f8e4: stress-ng.fpunch.fail kernel test robot
2025-05-22 12:37 ` Nilay Shroff
2025-05-29  1:52   ` Oliver Sang
2025-05-30 14:01     ` Nilay Shroff
2025-07-10  8:40       ` Oliver Sang
2025-07-10  9:50         ` Nilay Shroff

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