* [lkp] [rcu] cd73ca21cd2: No primary result change, +47.6% aim7.time.involuntary_context_switches
@ 2015-06-12 2:32 Huang Ying
0 siblings, 0 replies; only message in thread
From: Huang Ying @ 2015-06-12 2:32 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: LKML, LKP ML, Huang Ying
[-- Attachment #1: Type: text/plain, Size: 9923 bytes --]
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit cd73ca21cd2bb3711b8d80ba74c90d37ef15fe4d ("rcu: Force wakeup of rcu_gp_kthread at grace-period end")
testcase/path_params/tbox_group: aim7/performance-100-fork_test/lkp-a03
3382adbc1bb8c80e cd73ca21cd2bb3711b8d80ba74
---------------- --------------------------
%stddev %change %stddev
\ | \
205760 ± 2% +47.6% 303763 ± 1% aim7.time.involuntary_context_switches
215 ± 1% +24.7% 268 ± 22% sched_debug.cfs_rq[2]:/.load
205760 ± 2% +47.6% 303763 ± 1% time.involuntary_context_switches
366314 ± 1% +32.8% 486545 ± 3% softirqs.RCU
1493 ± 2% +17.1% 1749 ± 2% slabinfo.kmalloc-128.num_objs
1374 ± 1% +20.5% 1656 ± 2% slabinfo.kmalloc-128.active_objs
4511 ± 0% +7.5% 4850 ± 0% vmstat.system.in
7806 ± 0% +5.9% 8264 ± 1% vmstat.system.cs
335 ± 13% +30.2% 436 ± 12% latency_stats.avg.call_rwsem_down_write_failed.copy_process.do_fork.SyS_clone.system_call_fastpath
1266 ± 1% +18.6% 1501 ± 0% latency_stats.avg.do_wait.SyS_wait4.system_call_fastpath
188 ± 18% +27.9% 241 ± 19% latency_stats.avg.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.system_call_fastpath
955 ± 9% -29.6% 672 ± 17% latency_stats.avg.call_rwsem_down_write_failed.anon_vma_clone.anon_vma_fork.copy_process.do_fork.SyS_clone.system_call_fastpath
211 ± 3% -11.1% 188 ± 4% latency_stats.avg.pipe_wait.pipe_read.__vfs_read.vfs_read.SyS_read.system_call_fastpath
1109 ± 8% -24.0% 842 ± 18% latency_stats.avg.call_rwsem_down_write_failed.anon_vma_fork.copy_process.do_fork.SyS_clone.system_call_fastpath
3 ± 0% -33.3% 2 ± 0% latency_stats.hits.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_proc_getattr.[nfsv4].nfs4_proc_getattr.[nfsv4].__nfs_revalidate_inode.nfs_getattr.vfs_getattr_nosec.vfs_getattr.vfs_fstat
3 ± 0% -33.3% 2 ± 0% latency_stats.hits.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.filemap_write_and_wait.nfs_wb_all.nfs_getattr.vfs_getattr_nosec.vfs_getattr.vfs_fstat.SYSC_newfstat.SyS_newfstat.system_call_fastpath
1853 ± 1% +8.4% 2009 ± 2% latency_stats.hits.do_wait.SyS_wait4.system_call_fastpath
59 ± 11% +14.6% 68 ± 2% latency_stats.hits.call_rwsem_down_write_failed.cgroup_post_fork.copy_process.do_fork.SyS_clone.system_call_fastpath
28538 ± 10% -18.5% 23253 ± 5% latency_stats.max.call_rwsem_down_write_failed.anon_vma_clone.anon_vma_fork.copy_process.do_fork.SyS_clone.system_call_fastpath
32316 ± 17% -17.6% 26627 ± 6% latency_stats.max.call_rwsem_down_write_failed.anon_vma_fork.copy_process.do_fork.SyS_clone.system_call_fastpath
2347345 ± 2% +28.6% 3019561 ± 3% latency_stats.sum.do_wait.SyS_wait4.system_call_fastpath
3596 ± 10% +20.5% 4333 ± 6% latency_stats.sum.wait_on_page_bit_killable.__lock_page_or_retry.filemap_fault.__do_fault.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
1335990 ± 12% +49.7% 2000350 ± 12% latency_stats.sum.call_rwsem_down_write_failed.copy_process.do_fork.SyS_clone.system_call_fastpath
13375861 ± 15% -29.6% 9420979 ± 27% latency_stats.sum.call_rwsem_down_write_failed.anon_vma_clone.anon_vma_fork.copy_process.do_fork.SyS_clone.system_call_fastpath
1291678 ± 4% -10.6% 1155232 ± 3% latency_stats.sum.pipe_wait.pipe_read.__vfs_read.vfs_read.SyS_read.system_call_fastpath
567 ± 18% +27.8% 725 ± 19% latency_stats.sum.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.system_call_fastpath
1343 ± 5% -29.4% 948 ± 5% latency_stats.sum.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.filemap_write_and_wait.nfs_wb_all.nfs_getattr.vfs_getattr_nosec.vfs_getattr.vfs_fstat.SYSC_newfstat.SyS_newfstat.system_call_fastpath
lkp-a03: Atom
Memory: 8G
softirqs.RCU
520000 ++-----------------------------------------------------------------+
| O |
500000 O+ O O O O O O |
480000 ++ O O O O O O O O O O O |
| O O O O |
460000 ++ |
440000 ++ |
| |
420000 ++ |
400000 ++ |
| *.. |
380000 ++ .. *.. .*.. |
360000 ++ .*.. .*.. .*..*..*.*..*.* *.*..*.*.. .. * *.*.. .*..*
*..* * * *.* * |
340000 ++-----------------------------------------------------------------+
aim7.time.involuntary_context_switches
320000 ++-----------------------------------------------------------------+
| O O O O O O O O O |
300000 O+ O O O O O O O O O O |
| O O |
280000 ++ O |
| |
260000 ++ |
| |
240000 ++ |
| |
220000 ++ |
| .*.*.. .*..*..*. .*.*..*.. .*.. .*..*. .*..*.*.. .*..*. |
200000 *+ *.*..* *. * * *. * *..*
| |
180000 ++-----------------------------------------------------------------+
time.involuntary_context_switches
320000 ++-----------------------------------------------------------------+
| O O O O O O O O O |
300000 O+ O O O O O O O O O O |
| O O |
280000 ++ O |
| |
260000 ++ |
| |
240000 ++ |
| |
220000 ++ |
| .*.*.. .*..*..*. .*.*..*.. .*.. .*..*. .*..*.*.. .*..*. |
200000 *+ *.*..* *. * * *. * *..*
| |
180000 ++-----------------------------------------------------------------+
vmstat.system.in
4900 ++---------------------------O---------------------------------------+
O O O O O O O O O O O O O |
4850 ++ O O O O O O O O O |
4800 ++ |
| |
4750 ++ |
4700 ++ |
| |
4650 ++ |
4600 ++ |
| |
4550 ++ .*..*.. .*.. |
4500 *+.*. .*. .*..*.*.. .*.*..*..*.*..*.*..*..* *.*. *. .*
| *..*. *. *. *. |
4450 ++-------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
apt-get install ruby
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/setup-local job.yaml # the job file attached in this email
bin/run-local 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
-------------------------------------
lkp@eclists.intel.com
https://eclists.intel.com/sympa/info/lkp
Unsubscribe by sending email to sympa@eclists.intel.com with subject "Unsubscribe lkp"
[-- Attachment #2: job.yaml --]
[-- Type: text/plain, Size: 3054 bytes --]
---
LKP_SERVER: inn
LKP_CGI_PORT: 80
testcase: aim7
default-monitors:
wait: pre-test
uptime:
iostat:
vmstat:
numa-numastat:
numa-vmstat:
numa-meminfo:
proc-vmstat:
proc-stat:
interval: 10
meminfo:
slabinfo:
interrupts:
lock_stat:
latency_stats:
softirqs:
bdi_dev_mapping:
diskstats:
nfsstat:
cpuidle:
cpufreq-stats:
turbostat:
pmeter:
sched_debug:
interval: 60
default-watchdogs:
watch-oom:
watchdog:
cpufreq_governor: performance
commit: 54896f27dd5c7e83c37c85eb1093f14543af2bfa
model: Atom
memory: 8G
ssd_partitions: "/dev/disk/by-id/ata-INTEL_SSDSC2CW240A3_CVCV24050155240CGN-part1"
swap_partitions:
aim7:
load: 100
test: fork_test
testbox: lkp-a03
tbox_group: lkp-a03
kconfig: x86_64-rhel
enqueue_time: 2015-06-10 10:56:36.930460647 +08:00
user: lkp
queue: cyclic
compiler: gcc-4.9
head_commit: 54896f27dd5c7e83c37c85eb1093f14543af2bfa
base_commit: d4a4f75cd8f29cd9464a5a32e9224a91571d6649
branch: next/master
kernel: "/pkg/linux/x86_64-rhel/gcc-4.9/54896f27dd5c7e83c37c85eb1093f14543af2bfa/vmlinuz-4.1.0-rc7-next-20150610"
rootfs: debian-x86_64-2015-02-07.cgz
result_root: "/result/aim7/performance-100-fork_test/lkp-a03/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/54896f27dd5c7e83c37c85eb1093f14543af2bfa/0"
job_file: "/lkp/scheduled/lkp-a03/cyclic_aim7-performance-100-fork_test-x86_64-rhel-CYCLIC_HEAD-54896f27dd5c7e83c37c85eb1093f14543af2bfa-0-20150610-8556-14ms8jq.yaml"
dequeue_time: 2015-06-11 06:19:56.066407390 +08:00
nr_cpu: "$(nproc)"
max_uptime: 1495.8999999999999
initrd: "/osimage/debian/debian-x86_64-2015-02-07.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- job=/lkp/scheduled/lkp-a03/cyclic_aim7-performance-100-fork_test-x86_64-rhel-CYCLIC_HEAD-54896f27dd5c7e83c37c85eb1093f14543af2bfa-0-20150610-8556-14ms8jq.yaml
- ARCH=x86_64
- kconfig=x86_64-rhel
- branch=next/master
- commit=54896f27dd5c7e83c37c85eb1093f14543af2bfa
- BOOT_IMAGE=/pkg/linux/x86_64-rhel/gcc-4.9/54896f27dd5c7e83c37c85eb1093f14543af2bfa/vmlinuz-4.1.0-rc7-next-20150610
- max_uptime=1495
- RESULT_ROOT=/result/aim7/performance-100-fork_test/lkp-a03/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/54896f27dd5c7e83c37c85eb1093f14543af2bfa/0
- 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-rhel/gcc-4.9/54896f27dd5c7e83c37c85eb1093f14543af2bfa/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,/osimage/deps/debian-x86_64-2015-02-07.cgz/turbostat.cgz,/lkp/benchmarks/turbostat.cgz,/lkp/benchmarks/aim7-x86_64.cgz"
job_state: finished
loadavg: 76.17 66.16 31.35 1/109 3251
start_time: '1433974860'
end_time: '1433975225'
version: "/lkp/lkp/.src-20150611-021242"
[-- Attachment #3: reproduce --]
[-- Type: text/plain, Size: 292 bytes --]
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
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2015-06-12 2:32 [lkp] [rcu] cd73ca21cd2: No primary result change, +47.6% aim7.time.involuntary_context_switches Huang Ying
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