* [ksm] 40e318e509: ltp.ksm01.fail
@ 2016-01-25 3:04 ` kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2016-01-25 3:04 UTC (permalink / raw)
To: lkp
[-- Attachment #1: Type: text/plain, Size: 1564 bytes --]
FYI, we noticed the below changes on
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 40e318e509d2c9f3cdb00ef32d2c14b9868af16b ("ksm: introduce ksm_max_page_sharing per page deduplication limit")
We found LKP KSM test case failed for your patch.
=========================================================================================
compiler/kconfig/rootfs/tbox_group/test/testcase:
gcc-5/x86_64-nfsroot/debian-x86_64-2015-02-07.cgz/vm-lkp-wsx03-4G/mm_functional_positive/otc_kernel_qa-ts_ltp_ddt
commit:
77505a33e539477f1fbe5e6136df5b265f39cccf
40e318e509d2c9f3cdb00ef32d2c14b9868af16b
77505a33e539477f 40e318e509d2c9f3cdb00ef32d
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
:4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01.fail
:4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01_1.fail
vm-lkp-wsx03-4G: qemu-system-x86_64 -enable-kvm -cpu host
Memory: 4G
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Ying Huang
[-- Attachment #2: job.yaml --]
[-- Type: text/plain, Size: 3060 bytes --]
---
LKP_SERVER: inn
LKP_CGI_PORT: 80
LKP_CIFS_PORT: 139
testcase: otc_kernel_qa-ts_ltp_ddt
default-monitors:
wait: activate-monitor
kmsg:
vmstat:
interval: 10
default-watchdogs:
oom-killer:
watchdog:
cpufreq_governor:
model: qemu-system-x86_64 -enable-kvm -cpu host
nr_vm: 4
nr_cpu: 2
memory: 4G
rootfs: debian-x86_64-2015-02-07.cgz
hdd_partitions: "/dev/vda"
swap_partitions: "/dev/vdb"
ssh_base_port: 23640
category: functional
platform:
cyclic_branch: internal-eywa/master
otc_kernel_qa-ts_ltp_ddt:
test: mm_functional_positive
enqueue_time: 2016-01-22 21:45:37.423526851 +08:00
branch: linux-devel/devel-catchup-201601221452
commit: 40e318e509d2c9f3cdb00ef32d2c14b9868af16b
queue: bisect
compiler: gcc-5
testbox: vm-lkp-wsx03-4G-2
tbox_group: vm-lkp-wsx03-4G
kconfig: x86_64-nfsroot
id: b5f46bc5f86f783ccc11fabc5847bf6ebf5a03ff
user: lkp
result_root: "/result/otc_kernel_qa-ts_ltp_ddt/mm_functional_positive/vm-lkp-wsx03-4G/debian-x86_64-2015-02-07.cgz/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/1"
job_file: "/lkp/scheduled/vm-lkp-wsx03-4G-2/bisect_otc_kernel_qa-ts_ltp_ddt-mm_functional_positive-debian-x86_64-2015-02-07.cgz-x86_64-nfsroot-40e318e509d2c9f3cdb00ef32d2c14b9868af16b-20160122-58016-vbdb3u-1.yaml"
max_uptime: 3600
initrd: "/osimage/debian/debian-x86_64-2015-02-07.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- job=/lkp/scheduled/vm-lkp-wsx03-4G-2/bisect_otc_kernel_qa-ts_ltp_ddt-mm_functional_positive-debian-x86_64-2015-02-07.cgz-x86_64-nfsroot-40e318e509d2c9f3cdb00ef32d2c14b9868af16b-20160122-58016-vbdb3u-1.yaml
- ARCH=x86_64
- kconfig=x86_64-nfsroot
- branch=linux-devel/devel-catchup-201601221452
- commit=40e318e509d2c9f3cdb00ef32d2c14b9868af16b
- BOOT_IMAGE=/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/vmlinuz-4.4.0-09132-g40e318e
- max_uptime=3600
- RESULT_ROOT=/result/otc_kernel_qa-ts_ltp_ddt/mm_functional_positive/vm-lkp-wsx03-4G/debian-x86_64-2015-02-07.cgz/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/1
- LKP_SERVER=inn
- |2-
earlyprintk=ttyS0,115200 systemd.log_level=err
debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100
panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0
console=ttyS0,115200 console=tty0 vga=normal
rw
lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
modules_initrd: "/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/modules.cgz"
bm_initrd: "/osimage/deps/debian-x86_64-2015-02-07.cgz/lkp.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/run-ipconfig.cgz,/lkp/benchmarks/otc_kernel_qa-ts_ltp_ddt.cgz"
linux_headers_initrd: "/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/linux-headers.cgz"
kernel: "/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/vmlinuz-4.4.0-09132-g40e318e"
dequeue_time: 2016-01-22 21:51:32.350285504 +08:00
job_state: finished
loadavg: 1.91 1.12 0.51 1/113 12484
start_time: '1453470760'
end_time: '1453471194'
version: "/lkp/lkp/.src-20160122-180809"
[-- Attachment #3: reproduce.sh --]
[-- Type: application/x-sh, Size: 63 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread* [lkp] [ksm] 40e318e509: ltp.ksm01.fail
@ 2016-01-25 3:04 ` kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2016-01-25 3:04 UTC (permalink / raw)
To: Andrea Arcangeli
Cc: lkp, LKML, Andrew Morton, Arjan van de Ven, Davidlohr Bueso,
Hugh Dickins, Petr Holasek, Stephen Rothwell
[-- Attachment #1: Type: text/plain, Size: 1522 bytes --]
FYI, we noticed the below changes on
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 40e318e509d2c9f3cdb00ef32d2c14b9868af16b ("ksm: introduce ksm_max_page_sharing per page deduplication limit")
We found LKP KSM test case failed for your patch.
=========================================================================================
compiler/kconfig/rootfs/tbox_group/test/testcase:
gcc-5/x86_64-nfsroot/debian-x86_64-2015-02-07.cgz/vm-lkp-wsx03-4G/mm_functional_positive/otc_kernel_qa-ts_ltp_ddt
commit:
77505a33e539477f1fbe5e6136df5b265f39cccf
40e318e509d2c9f3cdb00ef32d2c14b9868af16b
77505a33e539477f 40e318e509d2c9f3cdb00ef32d
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
:4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01.fail
:4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01_1.fail
vm-lkp-wsx03-4G: qemu-system-x86_64 -enable-kvm -cpu host
Memory: 4G
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Ying Huang
[-- Attachment #2: job.yaml --]
[-- Type: text/plain, Size: 3060 bytes --]
---
LKP_SERVER: inn
LKP_CGI_PORT: 80
LKP_CIFS_PORT: 139
testcase: otc_kernel_qa-ts_ltp_ddt
default-monitors:
wait: activate-monitor
kmsg:
vmstat:
interval: 10
default-watchdogs:
oom-killer:
watchdog:
cpufreq_governor:
model: qemu-system-x86_64 -enable-kvm -cpu host
nr_vm: 4
nr_cpu: 2
memory: 4G
rootfs: debian-x86_64-2015-02-07.cgz
hdd_partitions: "/dev/vda"
swap_partitions: "/dev/vdb"
ssh_base_port: 23640
category: functional
platform:
cyclic_branch: internal-eywa/master
otc_kernel_qa-ts_ltp_ddt:
test: mm_functional_positive
enqueue_time: 2016-01-22 21:45:37.423526851 +08:00
branch: linux-devel/devel-catchup-201601221452
commit: 40e318e509d2c9f3cdb00ef32d2c14b9868af16b
queue: bisect
compiler: gcc-5
testbox: vm-lkp-wsx03-4G-2
tbox_group: vm-lkp-wsx03-4G
kconfig: x86_64-nfsroot
id: b5f46bc5f86f783ccc11fabc5847bf6ebf5a03ff
user: lkp
result_root: "/result/otc_kernel_qa-ts_ltp_ddt/mm_functional_positive/vm-lkp-wsx03-4G/debian-x86_64-2015-02-07.cgz/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/1"
job_file: "/lkp/scheduled/vm-lkp-wsx03-4G-2/bisect_otc_kernel_qa-ts_ltp_ddt-mm_functional_positive-debian-x86_64-2015-02-07.cgz-x86_64-nfsroot-40e318e509d2c9f3cdb00ef32d2c14b9868af16b-20160122-58016-vbdb3u-1.yaml"
max_uptime: 3600
initrd: "/osimage/debian/debian-x86_64-2015-02-07.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- job=/lkp/scheduled/vm-lkp-wsx03-4G-2/bisect_otc_kernel_qa-ts_ltp_ddt-mm_functional_positive-debian-x86_64-2015-02-07.cgz-x86_64-nfsroot-40e318e509d2c9f3cdb00ef32d2c14b9868af16b-20160122-58016-vbdb3u-1.yaml
- ARCH=x86_64
- kconfig=x86_64-nfsroot
- branch=linux-devel/devel-catchup-201601221452
- commit=40e318e509d2c9f3cdb00ef32d2c14b9868af16b
- BOOT_IMAGE=/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/vmlinuz-4.4.0-09132-g40e318e
- max_uptime=3600
- RESULT_ROOT=/result/otc_kernel_qa-ts_ltp_ddt/mm_functional_positive/vm-lkp-wsx03-4G/debian-x86_64-2015-02-07.cgz/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/1
- LKP_SERVER=inn
- |2-
earlyprintk=ttyS0,115200 systemd.log_level=err
debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100
panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0
console=ttyS0,115200 console=tty0 vga=normal
rw
lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
modules_initrd: "/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/modules.cgz"
bm_initrd: "/osimage/deps/debian-x86_64-2015-02-07.cgz/lkp.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/run-ipconfig.cgz,/lkp/benchmarks/otc_kernel_qa-ts_ltp_ddt.cgz"
linux_headers_initrd: "/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/linux-headers.cgz"
kernel: "/pkg/linux/x86_64-nfsroot/gcc-5/40e318e509d2c9f3cdb00ef32d2c14b9868af16b/vmlinuz-4.4.0-09132-g40e318e"
dequeue_time: 2016-01-22 21:51:32.350285504 +08:00
job_state: finished
loadavg: 1.91 1.12 0.51 1/113 12484
start_time: '1453470760'
end_time: '1453471194'
version: "/lkp/lkp/.src-20160122-180809"
[-- Attachment #3: reproduce.sh --]
[-- Type: application/x-sh, Size: 63 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [ksm] 40e318e509: ltp.ksm01.fail
2016-01-25 3:04 ` [lkp] " kernel test robot
@ 2016-01-25 14:54 ` Andrea Arcangeli
-1 siblings, 0 replies; 4+ messages in thread
From: Andrea Arcangeli @ 2016-01-25 14:54 UTC (permalink / raw)
To: lkp
[-- Attachment #1: Type: text/plain, Size: 1854 bytes --]
Hello,
On Mon, Jan 25, 2016 at 11:04:18AM +0800, kernel test robot wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 40e318e509d2c9f3cdb00ef32d2c14b9868af16b ("ksm: introduce ksm_max_page_sharing per page deduplication limit")
>
> We found LKP KSM test case failed for your patch.
>
> =========================================================================================
> compiler/kconfig/rootfs/tbox_group/test/testcase:
> gcc-5/x86_64-nfsroot/debian-x86_64-2015-02-07.cgz/vm-lkp-wsx03-4G/mm_functional_positive/otc_kernel_qa-ts_ltp_ddt
>
> commit:
> 77505a33e539477f1fbe5e6136df5b265f39cccf
> 40e318e509d2c9f3cdb00ef32d2c14b9868af16b
>
> 77505a33e539477f 40e318e509d2c9f3cdb00ef32d
> ---------------- --------------------------
> fail:runs %reproduction fail:runs
> | | |
> :4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01.fail
> :4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01_1.fail
In this case it's one rare case of false positive. The change in the
merging levels is a "feature" not a "bug".
LTP validation math on ksm sysfs levels shall be updated to account
for the runtime value of /sys/kernel/mm/ksm/max_page_sharing which in
turn affects pages_sharing/pages_shared. In fact you could add
validation for the new fields like stable_node_dups and
stable_node_chains on top of the existing verifications on pages_shar*.
For now you should re-run the test after:
echo 2 >/sys/kernel/mm/ksm/run
echo 10000000 > /sys/kernel/mm/ksm/max_page_sharing
echo 1 >/sys/kernel/mm/ksm/run
And then LTP will pass as usual.
Thanks for the greatly valuable regression testing work,
Andrea
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [lkp] [ksm] 40e318e509: ltp.ksm01.fail
@ 2016-01-25 14:54 ` Andrea Arcangeli
0 siblings, 0 replies; 4+ messages in thread
From: Andrea Arcangeli @ 2016-01-25 14:54 UTC (permalink / raw)
To: kernel test robot
Cc: lkp, LKML, Andrew Morton, Arjan van de Ven, Davidlohr Bueso,
Hugh Dickins, Petr Holasek, Stephen Rothwell
Hello,
On Mon, Jan 25, 2016 at 11:04:18AM +0800, kernel test robot wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 40e318e509d2c9f3cdb00ef32d2c14b9868af16b ("ksm: introduce ksm_max_page_sharing per page deduplication limit")
>
> We found LKP KSM test case failed for your patch.
>
> =========================================================================================
> compiler/kconfig/rootfs/tbox_group/test/testcase:
> gcc-5/x86_64-nfsroot/debian-x86_64-2015-02-07.cgz/vm-lkp-wsx03-4G/mm_functional_positive/otc_kernel_qa-ts_ltp_ddt
>
> commit:
> 77505a33e539477f1fbe5e6136df5b265f39cccf
> 40e318e509d2c9f3cdb00ef32d2c14b9868af16b
>
> 77505a33e539477f 40e318e509d2c9f3cdb00ef32d
> ---------------- --------------------------
> fail:runs %reproduction fail:runs
> | | |
> :4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01.fail
> :4 100% 4:4 otc_kernel_qa-ts_ltp_ddt.ksm01_1.fail
In this case it's one rare case of false positive. The change in the
merging levels is a "feature" not a "bug".
LTP validation math on ksm sysfs levels shall be updated to account
for the runtime value of /sys/kernel/mm/ksm/max_page_sharing which in
turn affects pages_sharing/pages_shared. In fact you could add
validation for the new fields like stable_node_dups and
stable_node_chains on top of the existing verifications on pages_shar*.
For now you should re-run the test after:
echo 2 >/sys/kernel/mm/ksm/run
echo 10000000 > /sys/kernel/mm/ksm/max_page_sharing
echo 1 >/sys/kernel/mm/ksm/run
And then LTP will pass as usual.
Thanks for the greatly valuable regression testing work,
Andrea
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-01-25 14:54 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2016-01-25 3:04 [ksm] 40e318e509: ltp.ksm01.fail kernel test robot
2016-01-25 3:04 ` [lkp] " kernel test robot
2016-01-25 14:54 ` Andrea Arcangeli
2016-01-25 14:54 ` [lkp] " Andrea Arcangeli
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