* [sched] perf-stat.cpu-migrations changes in dd write test
@ 2013-12-22 0:30 fengguang.wu
2013-12-23 5:19 ` Alex Shi
0 siblings, 1 reply; 6+ messages in thread
From: fengguang.wu @ 2013-12-22 0:30 UTC (permalink / raw)
To: Alex Shi; +Cc: Yuanhan Liu, Huang, Ying, lkp, LKML
Alex,
We noticed some perf-stat.cpu-migrations changes by your commit
6eb8b571283e64e96ca1a91aad085f9e08f857f0 is the first bad commit
commit 6eb8b571283e64e96ca1a91aad085f9e08f857f0
Author: Alex Shi <alex.shi@linaro.org>
Date: Tue Nov 19 20:29:51 2013 +0800
sched: remove rq->cpu_load[load_idx] array
Since load_idx effect removed in load balance, we don't need the
load_idx decays in scheduler. that will save some process in sched_tick
and others places.
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Here are the changed stats comparing to its parent commit:
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
37779 ~40% +115.2% 81288 ~50% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
37779 +115.2% 81288 TOTAL proc-vmstat.pgscan_direct_normal
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.pgscan_direct_normal
160000 ++----------------------------------------------------------------+
| |
140000 ++ O
| |
120000 ++ |
| O |
100000 ++ |
| |
80000 ++ O |
| ..*
60000 ++ .... |
| .... |
40000 *+............... O .... |
O *............... ........*. |
20000 ++-------------------------------*--------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
121579 ~ 6% -50.8% 59852 ~13% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
121579 -50.8% 59852 TOTAL softirqs.SCHED
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: softirqs.SCHED
140000 ++----------------------------------------------------------------+
130000 ++ ....*........... ....*....... |
| ........ .... ........ ...... |
120000 *+... *.... ..|
110000 ++ *
| |
100000 ++ |
90000 ++ |
80000 ++ |
| |
70000 ++ O O |
60000 ++ O |
| O
50000 O+ |
40000 ++----------------------------------------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
5636 ~ 4% -22.1% 4392 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
5636 -22.1% 4392 TOTAL proc-vmstat.nr_tlb_remote_flush
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.nr_tlb_remote_flush
6500 ++------------------------------------------------------------------+
| |
6000 ++ ........*............ |
*........ .... |
5500 ++ O *................*................|
| *
5000 ++ O |
| |
4500 ++ O |
| |
4000 ++ |
| O
3500 O+ |
| |
3000 ++------------------------------------------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
5679 ~ 4% -21.9% 4437 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
5679 -21.9% 4437 TOTAL proc-vmstat.nr_tlb_remote_flush_received
6500 ++------------------------------------------------------------------+
| |
6000 ++ ........*........ |
*........ ...... |
| .. ........*................|
5500 ++ O *........ *
| |
5000 ++ O |
| |
4500 ++ O |
| |
| |
4000 ++ |
| O
3500 O+------------------------------------------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
167 ~11% +19.4% 200 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
167 +19.4% 200 TOTAL uptime.idle
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: uptime.idle
220 ++-------------------------------------------------------------------+
| O
210 ++ |
200 O+ O |
| ..*..... O |
190 ++ .... O ... |
180 ++ .... .... |
| .... .... |
170 *+. . .*
160 ++ *...... .... |
| .... ... |
150 ++ .... ... |
140 ++ .. .... |
| *. |
130 ++-------------------------------------------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
154781 ~ 5% -66.8% 51449 ~ 8% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
154781 -66.8% 51449 TOTAL perf-stat.cpu-migrations
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.cpu-migrations
180000 ++----------------------------------------------------------------+
| ....*........... |
160000 ++ ........ .... ........*...............|
*.... *........ *
140000 ++ |
| |
120000 ++ |
| |
100000 ++ |
| |
80000 ++ |
| |
60000 ++ O |
| O O O
40000 O+----------------------------------------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
1943 ~ 3% -7.8% 1792 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
1943 -7.8% 1792 TOTAL vmstat.system.cs
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: vmstat.system.cs
2050 ++------------------------------------------------------------------+
| ........*................*..... |
2000 ++ .*........ ... |
1950 ++ .... ... |
| ... .... |
1900 ++ ... .|
1850 ++.... O O *
*. |
1800 ++ O O
1750 ++ |
| |
1700 ++ |
1650 O+ |
| |
1600 ++------------------------------------------------------------------+
1de157d718f6494 6eb8b571283e64e96ca1
--------------- -------------------------
1216177 ~ 3% -9.4% 1101605 ~ 7% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
1216177 -9.4% 1101605 TOTAL perf-stat.context-switches
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.context-switches
1.3e+06 ++--------------------------------------------------------------+
| ..*............... |
1.25e+06 ++ ...... *...............*....... |
| ..... ...... |
1.2e+06 *+. O ..|
1.15e+06 ++ O *
| O |
1.1e+06 ++ |
| O
1.05e+06 ++ |
1e+06 ++ |
| |
950000 O+ |
| |
900000 ++--------------------------------------------------------------+
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [sched] perf-stat.cpu-migrations changes in dd write test
2013-12-22 0:30 [sched] perf-stat.cpu-migrations changes in dd write test fengguang.wu
@ 2013-12-23 5:19 ` Alex Shi
2013-12-23 5:24 ` Fengguang Wu
0 siblings, 1 reply; 6+ messages in thread
From: Alex Shi @ 2013-12-23 5:19 UTC (permalink / raw)
To: fengguang.wu; +Cc: Yuanhan Liu, Huang, Ying, lkp, LKML
On 12/22/2013 08:30 AM, fengguang.wu@intel.com wrote:
> Alex,
>
> We noticed some perf-stat.cpu-migrations changes by your commit
Thanks for your wonder testing, Fengguang!
How many CPU in your system and how many dd task running?
>
> 6eb8b571283e64e96ca1a91aad085f9e08f857f0 is the first bad commit
> commit 6eb8b571283e64e96ca1a91aad085f9e08f857f0
> Author: Alex Shi <alex.shi@linaro.org>
> Date: Tue Nov 19 20:29:51 2013 +0800
>
> sched: remove rq->cpu_load[load_idx] array
>
> Since load_idx effect removed in load balance, we don't need the
> load_idx decays in scheduler. that will save some process in sched_tick
> and others places.
>
> Signed-off-by: Alex Shi <alex.shi@linaro.org>
>
>
> Here are the changed stats comparing to its parent commit:
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 37779 ~40% +115.2% 81288 ~50% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 37779 +115.2% 81288 TOTAL proc-vmstat.pgscan_direct_normal
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.pgscan_direct_normal
>
> 160000 ++----------------------------------------------------------------+
> | |
> 140000 ++ O
> | |
> 120000 ++ |
> | O |
> 100000 ++ |
> | |
> 80000 ++ O |
> | ..*
> 60000 ++ .... |
> | .... |
> 40000 *+............... O .... |
> O *............... ........*. |
> 20000 ++-------------------------------*--------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 121579 ~ 6% -50.8% 59852 ~13% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 121579 -50.8% 59852 TOTAL softirqs.SCHED
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: softirqs.SCHED
>
> 140000 ++----------------------------------------------------------------+
> 130000 ++ ....*........... ....*....... |
> | ........ .... ........ ...... |
> 120000 *+... *.... ..|
> 110000 ++ *
> | |
> 100000 ++ |
> 90000 ++ |
> 80000 ++ |
> | |
> 70000 ++ O O |
> 60000 ++ O |
> | O
> 50000 O+ |
> 40000 ++----------------------------------------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 5636 ~ 4% -22.1% 4392 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 5636 -22.1% 4392 TOTAL proc-vmstat.nr_tlb_remote_flush
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.nr_tlb_remote_flush
>
> 6500 ++------------------------------------------------------------------+
> | |
> 6000 ++ ........*............ |
> *........ .... |
> 5500 ++ O *................*................|
> | *
> 5000 ++ O |
> | |
> 4500 ++ O |
> | |
> 4000 ++ |
> | O
> 3500 O+ |
> | |
> 3000 ++------------------------------------------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 5679 ~ 4% -21.9% 4437 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 5679 -21.9% 4437 TOTAL proc-vmstat.nr_tlb_remote_flush_received
>
>
>
> 6500 ++------------------------------------------------------------------+
> | |
> 6000 ++ ........*........ |
> *........ ...... |
> | .. ........*................|
> 5500 ++ O *........ *
> | |
> 5000 ++ O |
> | |
> 4500 ++ O |
> | |
> | |
> 4000 ++ |
> | O
> 3500 O+------------------------------------------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 167 ~11% +19.4% 200 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 167 +19.4% 200 TOTAL uptime.idle
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: uptime.idle
>
> 220 ++-------------------------------------------------------------------+
> | O
> 210 ++ |
> 200 O+ O |
> | ..*..... O |
> 190 ++ .... O ... |
> 180 ++ .... .... |
> | .... .... |
> 170 *+. . .*
> 160 ++ *...... .... |
> | .... ... |
> 150 ++ .... ... |
> 140 ++ .. .... |
> | *. |
> 130 ++-------------------------------------------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 154781 ~ 5% -66.8% 51449 ~ 8% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 154781 -66.8% 51449 TOTAL perf-stat.cpu-migrations
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.cpu-migrations
>
> 180000 ++----------------------------------------------------------------+
> | ....*........... |
> 160000 ++ ........ .... ........*...............|
> *.... *........ *
> 140000 ++ |
> | |
> 120000 ++ |
> | |
> 100000 ++ |
> | |
> 80000 ++ |
> | |
> 60000 ++ O |
> | O O O
> 40000 O+----------------------------------------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 1943 ~ 3% -7.8% 1792 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 1943 -7.8% 1792 TOTAL vmstat.system.cs
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: vmstat.system.cs
>
> 2050 ++------------------------------------------------------------------+
> | ........*................*..... |
> 2000 ++ .*........ ... |
> 1950 ++ .... ... |
> | ... .... |
> 1900 ++ ... .|
> 1850 ++.... O O *
> *. |
> 1800 ++ O O
> 1750 ++ |
> | |
> 1700 ++ |
> 1650 O+ |
> | |
> 1600 ++------------------------------------------------------------------+
>
>
> 1de157d718f6494 6eb8b571283e64e96ca1
> --------------- -------------------------
> 1216177 ~ 3% -9.4% 1101605 ~ 7% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> 1216177 -9.4% 1101605 TOTAL perf-stat.context-switches
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.context-switches
>
> 1.3e+06 ++--------------------------------------------------------------+
> | ..*............... |
> 1.25e+06 ++ ...... *...............*....... |
> | ..... ...... |
> 1.2e+06 *+. O ..|
> 1.15e+06 ++ O *
> | O |
> 1.1e+06 ++ |
> | O
> 1.05e+06 ++ |
> 1e+06 ++ |
> | |
> 950000 O+ |
> | |
> 900000 ++--------------------------------------------------------------+
>
>
--
Thanks
Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [sched] perf-stat.cpu-migrations changes in dd write test
2013-12-23 5:19 ` Alex Shi
@ 2013-12-23 5:24 ` Fengguang Wu
2013-12-25 3:30 ` Alex Shi
0 siblings, 1 reply; 6+ messages in thread
From: Fengguang Wu @ 2013-12-23 5:24 UTC (permalink / raw)
To: Alex Shi; +Cc: Yuanhan Liu, Huang, Ying, lkp, LKML
On Mon, Dec 23, 2013 at 01:19:04PM +0800, Alex Shi wrote:
> On 12/22/2013 08:30 AM, fengguang.wu@intel.com wrote:
> > Alex,
> >
> > We noticed some perf-stat.cpu-migrations changes by your commit
>
> Thanks for your wonder testing, Fengguang!
> How many CPU in your system and how many dd task running?
For the case
kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
It's a KVM with 4 CPUs, 16G memory. There are 4 virtual disks, on top
of each disk there runs 10 dd tasks.
Thanks,
Fengguang
> >
> > 6eb8b571283e64e96ca1a91aad085f9e08f857f0 is the first bad commit
> > commit 6eb8b571283e64e96ca1a91aad085f9e08f857f0
> > Author: Alex Shi <alex.shi@linaro.org>
> > Date: Tue Nov 19 20:29:51 2013 +0800
> >
> > sched: remove rq->cpu_load[load_idx] array
> >
> > Since load_idx effect removed in load balance, we don't need the
> > load_idx decays in scheduler. that will save some process in sched_tick
> > and others places.
> >
> > Signed-off-by: Alex Shi <alex.shi@linaro.org>
> >
> >
> > Here are the changed stats comparing to its parent commit:
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 37779 ~40% +115.2% 81288 ~50% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 37779 +115.2% 81288 TOTAL proc-vmstat.pgscan_direct_normal
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.pgscan_direct_normal
> >
> > 160000 ++----------------------------------------------------------------+
> > | |
> > 140000 ++ O
> > | |
> > 120000 ++ |
> > | O |
> > 100000 ++ |
> > | |
> > 80000 ++ O |
> > | ..*
> > 60000 ++ .... |
> > | .... |
> > 40000 *+............... O .... |
> > O *............... ........*. |
> > 20000 ++-------------------------------*--------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 121579 ~ 6% -50.8% 59852 ~13% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 121579 -50.8% 59852 TOTAL softirqs.SCHED
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: softirqs.SCHED
> >
> > 140000 ++----------------------------------------------------------------+
> > 130000 ++ ....*........... ....*....... |
> > | ........ .... ........ ...... |
> > 120000 *+... *.... ..|
> > 110000 ++ *
> > | |
> > 100000 ++ |
> > 90000 ++ |
> > 80000 ++ |
> > | |
> > 70000 ++ O O |
> > 60000 ++ O |
> > | O
> > 50000 O+ |
> > 40000 ++----------------------------------------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 5636 ~ 4% -22.1% 4392 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 5636 -22.1% 4392 TOTAL proc-vmstat.nr_tlb_remote_flush
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.nr_tlb_remote_flush
> >
> > 6500 ++------------------------------------------------------------------+
> > | |
> > 6000 ++ ........*............ |
> > *........ .... |
> > 5500 ++ O *................*................|
> > | *
> > 5000 ++ O |
> > | |
> > 4500 ++ O |
> > | |
> > 4000 ++ |
> > | O
> > 3500 O+ |
> > | |
> > 3000 ++------------------------------------------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 5679 ~ 4% -21.9% 4437 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 5679 -21.9% 4437 TOTAL proc-vmstat.nr_tlb_remote_flush_received
> >
> >
> >
> > 6500 ++------------------------------------------------------------------+
> > | |
> > 6000 ++ ........*........ |
> > *........ ...... |
> > | .. ........*................|
> > 5500 ++ O *........ *
> > | |
> > 5000 ++ O |
> > | |
> > 4500 ++ O |
> > | |
> > | |
> > 4000 ++ |
> > | O
> > 3500 O+------------------------------------------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 167 ~11% +19.4% 200 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 167 +19.4% 200 TOTAL uptime.idle
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: uptime.idle
> >
> > 220 ++-------------------------------------------------------------------+
> > | O
> > 210 ++ |
> > 200 O+ O |
> > | ..*..... O |
> > 190 ++ .... O ... |
> > 180 ++ .... .... |
> > | .... .... |
> > 170 *+. . .*
> > 160 ++ *...... .... |
> > | .... ... |
> > 150 ++ .... ... |
> > 140 ++ .. .... |
> > | *. |
> > 130 ++-------------------------------------------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 154781 ~ 5% -66.8% 51449 ~ 8% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 154781 -66.8% 51449 TOTAL perf-stat.cpu-migrations
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.cpu-migrations
> >
> > 180000 ++----------------------------------------------------------------+
> > | ....*........... |
> > 160000 ++ ........ .... ........*...............|
> > *.... *........ *
> > 140000 ++ |
> > | |
> > 120000 ++ |
> > | |
> > 100000 ++ |
> > | |
> > 80000 ++ |
> > | |
> > 60000 ++ O |
> > | O O O
> > 40000 O+----------------------------------------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 1943 ~ 3% -7.8% 1792 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 1943 -7.8% 1792 TOTAL vmstat.system.cs
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: vmstat.system.cs
> >
> > 2050 ++------------------------------------------------------------------+
> > | ........*................*..... |
> > 2000 ++ .*........ ... |
> > 1950 ++ .... ... |
> > | ... .... |
> > 1900 ++ ... .|
> > 1850 ++.... O O *
> > *. |
> > 1800 ++ O O
> > 1750 ++ |
> > | |
> > 1700 ++ |
> > 1650 O+ |
> > | |
> > 1600 ++------------------------------------------------------------------+
> >
> >
> > 1de157d718f6494 6eb8b571283e64e96ca1
> > --------------- -------------------------
> > 1216177 ~ 3% -9.4% 1101605 ~ 7% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> > 1216177 -9.4% 1101605 TOTAL perf-stat.context-switches
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.context-switches
> >
> > 1.3e+06 ++--------------------------------------------------------------+
> > | ..*............... |
> > 1.25e+06 ++ ...... *...............*....... |
> > | ..... ...... |
> > 1.2e+06 *+. O ..|
> > 1.15e+06 ++ O *
> > | O |
> > 1.1e+06 ++ |
> > | O
> > 1.05e+06 ++ |
> > 1e+06 ++ |
> > | |
> > 950000 O+ |
> > | |
> > 900000 ++--------------------------------------------------------------+
> >
> >
>
>
> --
> Thanks
> Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [sched] perf-stat.cpu-migrations changes in dd write test
2013-12-23 5:24 ` Fengguang Wu
@ 2013-12-25 3:30 ` Alex Shi
2013-12-25 3:56 ` Fengguang Wu
0 siblings, 1 reply; 6+ messages in thread
From: Alex Shi @ 2013-12-25 3:30 UTC (permalink / raw)
To: Fengguang Wu; +Cc: Yuanhan Liu, Huang, Ying, lkp, LKML
On 12/23/2013 01:24 PM, Fengguang Wu wrote:
> On Mon, Dec 23, 2013 at 01:19:04PM +0800, Alex Shi wrote:
>> On 12/22/2013 08:30 AM, fengguang.wu@intel.com wrote:
>>> Alex,
>>>
>>> We noticed some perf-stat.cpu-migrations changes by your commit
>>
>> Thanks for your wonder testing, Fengguang!
>> How many CPU in your system and how many dd task running?
>
> For the case
>
> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>
> It's a KVM with 4 CPUs, 16G memory. There are 4 virtual disks, on top
> of each disk there runs 10 dd tasks.
I don't know much of kvm. Where the data get from, VM guest or VM host?
Looks like any guest cpu usage will be counted as user usage in vmstat.
and Does the CS and cpu migration reducing cause dd performance increase?
>
> Thanks,
> Fengguang
>
>>>
>>> 6eb8b571283e64e96ca1a91aad085f9e08f857f0 is the first bad commit
>>> commit 6eb8b571283e64e96ca1a91aad085f9e08f857f0
>>> Author: Alex Shi <alex.shi@linaro.org>
>>> Date: Tue Nov 19 20:29:51 2013 +0800
>>>
>>> sched: remove rq->cpu_load[load_idx] array
>>>
>>> Since load_idx effect removed in load balance, we don't need the
>>> load_idx decays in scheduler. that will save some process in sched_tick
>>> and others places.
>>>
>>> Signed-off-by: Alex Shi <alex.shi@linaro.org>
>>>
>>>
>>> Here are the changed stats comparing to its parent commit:
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 37779 ~40% +115.2% 81288 ~50% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 37779 +115.2% 81288 TOTAL proc-vmstat.pgscan_direct_normal
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.pgscan_direct_normal
>>>
>>> 160000 ++----------------------------------------------------------------+
>>> | |
>>> 140000 ++ O
>>> | |
>>> 120000 ++ |
>>> | O |
>>> 100000 ++ |
>>> | |
>>> 80000 ++ O |
>>> | ..*
>>> 60000 ++ .... |
>>> | .... |
>>> 40000 *+............... O .... |
>>> O *............... ........*. |
>>> 20000 ++-------------------------------*--------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 121579 ~ 6% -50.8% 59852 ~13% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 121579 -50.8% 59852 TOTAL softirqs.SCHED
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: softirqs.SCHED
>>>
>>> 140000 ++----------------------------------------------------------------+
>>> 130000 ++ ....*........... ....*....... |
>>> | ........ .... ........ ...... |
>>> 120000 *+... *.... ..|
>>> 110000 ++ *
>>> | |
>>> 100000 ++ |
>>> 90000 ++ |
>>> 80000 ++ |
>>> | |
>>> 70000 ++ O O |
>>> 60000 ++ O |
>>> | O
>>> 50000 O+ |
>>> 40000 ++----------------------------------------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 5636 ~ 4% -22.1% 4392 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 5636 -22.1% 4392 TOTAL proc-vmstat.nr_tlb_remote_flush
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.nr_tlb_remote_flush
>>>
>>> 6500 ++------------------------------------------------------------------+
>>> | |
>>> 6000 ++ ........*............ |
>>> *........ .... |
>>> 5500 ++ O *................*................|
>>> | *
>>> 5000 ++ O |
>>> | |
>>> 4500 ++ O |
>>> | |
>>> 4000 ++ |
>>> | O
>>> 3500 O+ |
>>> | |
>>> 3000 ++------------------------------------------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 5679 ~ 4% -21.9% 4437 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 5679 -21.9% 4437 TOTAL proc-vmstat.nr_tlb_remote_flush_received
>>>
>>>
>>>
>>> 6500 ++------------------------------------------------------------------+
>>> | |
>>> 6000 ++ ........*........ |
>>> *........ ...... |
>>> | .. ........*................|
>>> 5500 ++ O *........ *
>>> | |
>>> 5000 ++ O |
>>> | |
>>> 4500 ++ O |
>>> | |
>>> | |
>>> 4000 ++ |
>>> | O
>>> 3500 O+------------------------------------------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 167 ~11% +19.4% 200 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 167 +19.4% 200 TOTAL uptime.idle
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: uptime.idle
>>>
>>> 220 ++-------------------------------------------------------------------+
>>> | O
>>> 210 ++ |
>>> 200 O+ O |
>>> | ..*..... O |
>>> 190 ++ .... O ... |
>>> 180 ++ .... .... |
>>> | .... .... |
>>> 170 *+. . .*
>>> 160 ++ *...... .... |
>>> | .... ... |
>>> 150 ++ .... ... |
>>> 140 ++ .. .... |
>>> | *. |
>>> 130 ++-------------------------------------------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 154781 ~ 5% -66.8% 51449 ~ 8% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 154781 -66.8% 51449 TOTAL perf-stat.cpu-migrations
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.cpu-migrations
>>>
>>> 180000 ++----------------------------------------------------------------+
>>> | ....*........... |
>>> 160000 ++ ........ .... ........*...............|
>>> *.... *........ *
>>> 140000 ++ |
>>> | |
>>> 120000 ++ |
>>> | |
>>> 100000 ++ |
>>> | |
>>> 80000 ++ |
>>> | |
>>> 60000 ++ O |
>>> | O O O
>>> 40000 O+----------------------------------------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 1943 ~ 3% -7.8% 1792 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 1943 -7.8% 1792 TOTAL vmstat.system.cs
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: vmstat.system.cs
>>>
>>> 2050 ++------------------------------------------------------------------+
>>> | ........*................*..... |
>>> 2000 ++ .*........ ... |
>>> 1950 ++ .... ... |
>>> | ... .... |
>>> 1900 ++ ... .|
>>> 1850 ++.... O O *
>>> *. |
>>> 1800 ++ O O
>>> 1750 ++ |
>>> | |
>>> 1700 ++ |
>>> 1650 O+ |
>>> | |
>>> 1600 ++------------------------------------------------------------------+
>>>
>>>
>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>> --------------- -------------------------
>>> 1216177 ~ 3% -9.4% 1101605 ~ 7% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>> 1216177 -9.4% 1101605 TOTAL perf-stat.context-switches
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.context-switches
>>>
>>> 1.3e+06 ++--------------------------------------------------------------+
>>> | ..*............... |
>>> 1.25e+06 ++ ...... *...............*....... |
>>> | ..... ...... |
>>> 1.2e+06 *+. O ..|
>>> 1.15e+06 ++ O *
>>> | O |
>>> 1.1e+06 ++ |
>>> | O
>>> 1.05e+06 ++ |
>>> 1e+06 ++ |
>>> | |
>>> 950000 O+ |
>>> | |
>>> 900000 ++--------------------------------------------------------------+
>>>
>>>
>>
>>
>> --
>> Thanks
>> Alex
--
Thanks
Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [sched] perf-stat.cpu-migrations changes in dd write test
2013-12-25 3:30 ` Alex Shi
@ 2013-12-25 3:56 ` Fengguang Wu
2013-12-25 6:32 ` Alex Shi
0 siblings, 1 reply; 6+ messages in thread
From: Fengguang Wu @ 2013-12-25 3:56 UTC (permalink / raw)
To: Alex Shi; +Cc: Yuanhan Liu, Huang, Ying, lkp, LKML
On Wed, Dec 25, 2013 at 11:30:27AM +0800, Alex Shi wrote:
> On 12/23/2013 01:24 PM, Fengguang Wu wrote:
> > On Mon, Dec 23, 2013 at 01:19:04PM +0800, Alex Shi wrote:
> >> On 12/22/2013 08:30 AM, fengguang.wu@intel.com wrote:
> >>> Alex,
> >>>
> >>> We noticed some perf-stat.cpu-migrations changes by your commit
> >>
> >> Thanks for your wonder testing, Fengguang!
> >> How many CPU in your system and how many dd task running?
> >
> > For the case
> >
> > kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >
> > It's a KVM with 4 CPUs, 16G memory. There are 4 virtual disks, on top
> > of each disk there runs 10 dd tasks.
>
> I don't know much of kvm. Where the data get from, VM guest or VM host?
The data are collected in the VM guest.
Thanks,
Fengguang
> Looks like any guest cpu usage will be counted as user usage in vmstat.
> and Does the CS and cpu migration reducing cause dd performance increase?
> >
> > Thanks,
> > Fengguang
> >
> >>>
> >>> 6eb8b571283e64e96ca1a91aad085f9e08f857f0 is the first bad commit
> >>> commit 6eb8b571283e64e96ca1a91aad085f9e08f857f0
> >>> Author: Alex Shi <alex.shi@linaro.org>
> >>> Date: Tue Nov 19 20:29:51 2013 +0800
> >>>
> >>> sched: remove rq->cpu_load[load_idx] array
> >>>
> >>> Since load_idx effect removed in load balance, we don't need the
> >>> load_idx decays in scheduler. that will save some process in sched_tick
> >>> and others places.
> >>>
> >>> Signed-off-by: Alex Shi <alex.shi@linaro.org>
> >>>
> >>>
> >>> Here are the changed stats comparing to its parent commit:
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 37779 ~40% +115.2% 81288 ~50% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 37779 +115.2% 81288 TOTAL proc-vmstat.pgscan_direct_normal
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.pgscan_direct_normal
> >>>
> >>> 160000 ++----------------------------------------------------------------+
> >>> | |
> >>> 140000 ++ O
> >>> | |
> >>> 120000 ++ |
> >>> | O |
> >>> 100000 ++ |
> >>> | |
> >>> 80000 ++ O |
> >>> | ..*
> >>> 60000 ++ .... |
> >>> | .... |
> >>> 40000 *+............... O .... |
> >>> O *............... ........*. |
> >>> 20000 ++-------------------------------*--------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 121579 ~ 6% -50.8% 59852 ~13% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 121579 -50.8% 59852 TOTAL softirqs.SCHED
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: softirqs.SCHED
> >>>
> >>> 140000 ++----------------------------------------------------------------+
> >>> 130000 ++ ....*........... ....*....... |
> >>> | ........ .... ........ ...... |
> >>> 120000 *+... *.... ..|
> >>> 110000 ++ *
> >>> | |
> >>> 100000 ++ |
> >>> 90000 ++ |
> >>> 80000 ++ |
> >>> | |
> >>> 70000 ++ O O |
> >>> 60000 ++ O |
> >>> | O
> >>> 50000 O+ |
> >>> 40000 ++----------------------------------------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 5636 ~ 4% -22.1% 4392 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 5636 -22.1% 4392 TOTAL proc-vmstat.nr_tlb_remote_flush
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.nr_tlb_remote_flush
> >>>
> >>> 6500 ++------------------------------------------------------------------+
> >>> | |
> >>> 6000 ++ ........*............ |
> >>> *........ .... |
> >>> 5500 ++ O *................*................|
> >>> | *
> >>> 5000 ++ O |
> >>> | |
> >>> 4500 ++ O |
> >>> | |
> >>> 4000 ++ |
> >>> | O
> >>> 3500 O+ |
> >>> | |
> >>> 3000 ++------------------------------------------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 5679 ~ 4% -21.9% 4437 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 5679 -21.9% 4437 TOTAL proc-vmstat.nr_tlb_remote_flush_received
> >>>
> >>>
> >>>
> >>> 6500 ++------------------------------------------------------------------+
> >>> | |
> >>> 6000 ++ ........*........ |
> >>> *........ ...... |
> >>> | .. ........*................|
> >>> 5500 ++ O *........ *
> >>> | |
> >>> 5000 ++ O |
> >>> | |
> >>> 4500 ++ O |
> >>> | |
> >>> | |
> >>> 4000 ++ |
> >>> | O
> >>> 3500 O+------------------------------------------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 167 ~11% +19.4% 200 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 167 +19.4% 200 TOTAL uptime.idle
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: uptime.idle
> >>>
> >>> 220 ++-------------------------------------------------------------------+
> >>> | O
> >>> 210 ++ |
> >>> 200 O+ O |
> >>> | ..*..... O |
> >>> 190 ++ .... O ... |
> >>> 180 ++ .... .... |
> >>> | .... .... |
> >>> 170 *+. . .*
> >>> 160 ++ *...... .... |
> >>> | .... ... |
> >>> 150 ++ .... ... |
> >>> 140 ++ .. .... |
> >>> | *. |
> >>> 130 ++-------------------------------------------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 154781 ~ 5% -66.8% 51449 ~ 8% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 154781 -66.8% 51449 TOTAL perf-stat.cpu-migrations
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.cpu-migrations
> >>>
> >>> 180000 ++----------------------------------------------------------------+
> >>> | ....*........... |
> >>> 160000 ++ ........ .... ........*...............|
> >>> *.... *........ *
> >>> 140000 ++ |
> >>> | |
> >>> 120000 ++ |
> >>> | |
> >>> 100000 ++ |
> >>> | |
> >>> 80000 ++ |
> >>> | |
> >>> 60000 ++ O |
> >>> | O O O
> >>> 40000 O+----------------------------------------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 1943 ~ 3% -7.8% 1792 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 1943 -7.8% 1792 TOTAL vmstat.system.cs
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: vmstat.system.cs
> >>>
> >>> 2050 ++------------------------------------------------------------------+
> >>> | ........*................*..... |
> >>> 2000 ++ .*........ ... |
> >>> 1950 ++ .... ... |
> >>> | ... .... |
> >>> 1900 ++ ... .|
> >>> 1850 ++.... O O *
> >>> *. |
> >>> 1800 ++ O O
> >>> 1750 ++ |
> >>> | |
> >>> 1700 ++ |
> >>> 1650 O+ |
> >>> | |
> >>> 1600 ++------------------------------------------------------------------+
> >>>
> >>>
> >>> 1de157d718f6494 6eb8b571283e64e96ca1
> >>> --------------- -------------------------
> >>> 1216177 ~ 3% -9.4% 1101605 ~ 7% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
> >>> 1216177 -9.4% 1101605 TOTAL perf-stat.context-switches
> >>>
> >>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.context-switches
> >>>
> >>> 1.3e+06 ++--------------------------------------------------------------+
> >>> | ..*............... |
> >>> 1.25e+06 ++ ...... *...............*....... |
> >>> | ..... ...... |
> >>> 1.2e+06 *+. O ..|
> >>> 1.15e+06 ++ O *
> >>> | O |
> >>> 1.1e+06 ++ |
> >>> | O
> >>> 1.05e+06 ++ |
> >>> 1e+06 ++ |
> >>> | |
> >>> 950000 O+ |
> >>> | |
> >>> 900000 ++--------------------------------------------------------------+
> >>>
> >>>
> >>
> >>
> >> --
> >> Thanks
> >> Alex
>
>
> --
> Thanks
> Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [sched] perf-stat.cpu-migrations changes in dd write test
2013-12-25 3:56 ` Fengguang Wu
@ 2013-12-25 6:32 ` Alex Shi
0 siblings, 0 replies; 6+ messages in thread
From: Alex Shi @ 2013-12-25 6:32 UTC (permalink / raw)
To: Fengguang Wu; +Cc: Yuanhan Liu, Huang, Ying, lkp, LKML
On 12/25/2013 11:56 AM, Fengguang Wu wrote:
> On Wed, Dec 25, 2013 at 11:30:27AM +0800, Alex Shi wrote:
>> On 12/23/2013 01:24 PM, Fengguang Wu wrote:
>>> On Mon, Dec 23, 2013 at 01:19:04PM +0800, Alex Shi wrote:
>>>> On 12/22/2013 08:30 AM, fengguang.wu@intel.com wrote:
>>>>> Alex,
>>>>>
>>>>> We noticed some perf-stat.cpu-migrations changes by your commit
>>>>
>>>> Thanks for your wonder testing, Fengguang!
>>>> How many CPU in your system and how many dd task running?
>>>
>>> For the case
>>>
>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>
>>> It's a KVM with 4 CPUs, 16G memory. There are 4 virtual disks, on top
>>> of each disk there runs 10 dd tasks.
>>
>> I don't know much of kvm. Where the data get from, VM guest or VM host?
>
> The data are collected in the VM guest.
do you have similar testing on native linux?
>
> Thanks,
> Fengguang
>
>> Looks like any guest cpu usage will be counted as user usage in vmstat.
>> and Does the CS and cpu migration reducing cause dd performance increase?
>>>
>>> Thanks,
>>> Fengguang
>>>
>>>>>
>>>>> 6eb8b571283e64e96ca1a91aad085f9e08f857f0 is the first bad commit
>>>>> commit 6eb8b571283e64e96ca1a91aad085f9e08f857f0
>>>>> Author: Alex Shi <alex.shi@linaro.org>
>>>>> Date: Tue Nov 19 20:29:51 2013 +0800
>>>>>
>>>>> sched: remove rq->cpu_load[load_idx] array
>>>>>
>>>>> Since load_idx effect removed in load balance, we don't need the
>>>>> load_idx decays in scheduler. that will save some process in sched_tick
>>>>> and others places.
>>>>>
>>>>> Signed-off-by: Alex Shi <alex.shi@linaro.org>
>>>>>
>>>>>
>>>>> Here are the changed stats comparing to its parent commit:
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 37779 ~40% +115.2% 81288 ~50% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 37779 +115.2% 81288 TOTAL proc-vmstat.pgscan_direct_normal
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.pgscan_direct_normal
>>>>>
>>>>> 160000 ++----------------------------------------------------------------+
>>>>> | |
>>>>> 140000 ++ O
>>>>> | |
>>>>> 120000 ++ |
>>>>> | O |
>>>>> 100000 ++ |
>>>>> | |
>>>>> 80000 ++ O |
>>>>> | ..*
>>>>> 60000 ++ .... |
>>>>> | .... |
>>>>> 40000 *+............... O .... |
>>>>> O *............... ........*. |
>>>>> 20000 ++-------------------------------*--------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 121579 ~ 6% -50.8% 59852 ~13% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 121579 -50.8% 59852 TOTAL softirqs.SCHED
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: softirqs.SCHED
>>>>>
>>>>> 140000 ++----------------------------------------------------------------+
>>>>> 130000 ++ ....*........... ....*....... |
>>>>> | ........ .... ........ ...... |
>>>>> 120000 *+... *.... ..|
>>>>> 110000 ++ *
>>>>> | |
>>>>> 100000 ++ |
>>>>> 90000 ++ |
>>>>> 80000 ++ |
>>>>> | |
>>>>> 70000 ++ O O |
>>>>> 60000 ++ O |
>>>>> | O
>>>>> 50000 O+ |
>>>>> 40000 ++----------------------------------------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 5636 ~ 4% -22.1% 4392 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 5636 -22.1% 4392 TOTAL proc-vmstat.nr_tlb_remote_flush
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: proc-vmstat.nr_tlb_remote_flush
>>>>>
>>>>> 6500 ++------------------------------------------------------------------+
>>>>> | |
>>>>> 6000 ++ ........*............ |
>>>>> *........ .... |
>>>>> 5500 ++ O *................*................|
>>>>> | *
>>>>> 5000 ++ O |
>>>>> | |
>>>>> 4500 ++ O |
>>>>> | |
>>>>> 4000 ++ |
>>>>> | O
>>>>> 3500 O+ |
>>>>> | |
>>>>> 3000 ++------------------------------------------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 5679 ~ 4% -21.9% 4437 ~17% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 5679 -21.9% 4437 TOTAL proc-vmstat.nr_tlb_remote_flush_received
>>>>>
>>>>>
>>>>>
>>>>> 6500 ++------------------------------------------------------------------+
>>>>> | |
>>>>> 6000 ++ ........*........ |
>>>>> *........ ...... |
>>>>> | .. ........*................|
>>>>> 5500 ++ O *........ *
>>>>> | |
>>>>> 5000 ++ O |
>>>>> | |
>>>>> 4500 ++ O |
>>>>> | |
>>>>> | |
>>>>> 4000 ++ |
>>>>> | O
>>>>> 3500 O+------------------------------------------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 167 ~11% +19.4% 200 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 167 +19.4% 200 TOTAL uptime.idle
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: uptime.idle
>>>>>
>>>>> 220 ++-------------------------------------------------------------------+
>>>>> | O
>>>>> 210 ++ |
>>>>> 200 O+ O |
>>>>> | ..*..... O |
>>>>> 190 ++ .... O ... |
>>>>> 180 ++ .... .... |
>>>>> | .... .... |
>>>>> 170 *+. . .*
>>>>> 160 ++ *...... .... |
>>>>> | .... ... |
>>>>> 150 ++ .... ... |
>>>>> 140 ++ .. .... |
>>>>> | *. |
>>>>> 130 ++-------------------------------------------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 154781 ~ 5% -66.8% 51449 ~ 8% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 154781 -66.8% 51449 TOTAL perf-stat.cpu-migrations
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.cpu-migrations
>>>>>
>>>>> 180000 ++----------------------------------------------------------------+
>>>>> | ....*........... |
>>>>> 160000 ++ ........ .... ........*...............|
>>>>> *.... *........ *
>>>>> 140000 ++ |
>>>>> | |
>>>>> 120000 ++ |
>>>>> | |
>>>>> 100000 ++ |
>>>>> | |
>>>>> 80000 ++ |
>>>>> | |
>>>>> 60000 ++ O |
>>>>> | O O O
>>>>> 40000 O+----------------------------------------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 1943 ~ 3% -7.8% 1792 ~ 4% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 1943 -7.8% 1792 TOTAL vmstat.system.cs
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: vmstat.system.cs
>>>>>
>>>>> 2050 ++------------------------------------------------------------------+
>>>>> | ........*................*..... |
>>>>> 2000 ++ .*........ ... |
>>>>> 1950 ++ .... ... |
>>>>> | ... .... |
>>>>> 1900 ++ ... .|
>>>>> 1850 ++.... O O *
>>>>> *. |
>>>>> 1800 ++ O O
>>>>> 1750 ++ |
>>>>> | |
>>>>> 1700 ++ |
>>>>> 1650 O+ |
>>>>> | |
>>>>> 1600 ++------------------------------------------------------------------+
>>>>>
>>>>>
>>>>> 1de157d718f6494 6eb8b571283e64e96ca1
>>>>> --------------- -------------------------
>>>>> 1216177 ~ 3% -9.4% 1101605 ~ 7% kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd
>>>>> 1216177 -9.4% 1101605 TOTAL perf-stat.context-switches
>>>>>
>>>>> kbuildx/micro/dd-write/4HDD-JBOD-cfq-ext4-10dd: perf-stat.context-switches
>>>>>
>>>>> 1.3e+06 ++--------------------------------------------------------------+
>>>>> | ..*............... |
>>>>> 1.25e+06 ++ ...... *...............*....... |
>>>>> | ..... ...... |
>>>>> 1.2e+06 *+. O ..|
>>>>> 1.15e+06 ++ O *
>>>>> | O |
>>>>> 1.1e+06 ++ |
>>>>> | O
>>>>> 1.05e+06 ++ |
>>>>> 1e+06 ++ |
>>>>> | |
>>>>> 950000 O+ |
>>>>> | |
>>>>> 900000 ++--------------------------------------------------------------+
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Thanks
>>>> Alex
>>
>>
>> --
>> Thanks
>> Alex
--
Thanks
Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-12-22 0:30 [sched] perf-stat.cpu-migrations changes in dd write test fengguang.wu
2013-12-23 5:19 ` Alex Shi
2013-12-23 5:24 ` Fengguang Wu
2013-12-25 3:30 ` Alex Shi
2013-12-25 3:56 ` Fengguang Wu
2013-12-25 6:32 ` Alex Shi
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