[LKP] [genirq] c291ee62216:

From: Huang Ying
Date: Mon Dec 15 2014 - 02:07:52 EST

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FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/urgent
commit c291ee622165cb2c8d4e7af63fffd499354a23be ("genirq: Prevent proc race against freeing of irq descriptors")

testbox/testcase/testparams: lkp-nex04/netperf/performance-300s-200%-SCTP_STREAM

3a5dc1fafb016560 c291ee622165cb2c8d4e7af63f
---------------- --------------------------
%stddev %change %stddev
\ | \
16 Â 44% -73.1% 4 Â 36% sched_debug.cfs_rq[32]:/.tg_runnable_contrib
1 Â 0% +175.0% 2 Â 15% sched_debug.cfs_rq[53]:/.nr_spread_over
814 Â 41% -70.5% 240 Â 37% sched_debug.cfs_rq[32]:/.avg->runnable_avg_sum
136 Â 35% +104.6% 278 Â 26% sched_debug.cpu#5.curr->pid
4149 Â 8% +140.6% 9981 Â 22% sched_debug.cfs_rq[35]:/.min_vruntime
5151 Â 28% +97.3% 10166 Â 19% sched_debug.cfs_rq[58]:/.min_vruntime
4897 Â 15% +86.8% 9149 Â 23% sched_debug.cfs_rq[41]:/.min_vruntime
5001 Â 8% +100.2% 10011 Â 6% sched_debug.cfs_rq[62]:/.min_vruntime
990 Â 25% +103.7% 2017 Â 49% sched_debug.cfs_rq[16]:/.exec_clock
106 Â 40% +65.1% 175 Â 26% sched_debug.cfs_rq[37]:/.tg_load_contrib
4649 Â 14% +122.4% 10338 Â 24% sched_debug.cfs_rq[43]:/.min_vruntime
4432 Â 9% +97.2% 8742 Â 15% sched_debug.cfs_rq[54]:/.min_vruntime
1011 Â 16% +80.0% 1820 Â 36% sched_debug.cfs_rq[23]:/.exec_clock
10 Â 22% -41.9% 6 Â 17% sched_debug.cfs_rq[11]:/.tg_runnable_contrib
2 Â 19% +77.8% 4 Â 30% sched_debug.cfs_rq[0]:/.nr_spread_over
5093 Â 4% +81.3% 9232 Â 18% sched_debug.cfs_rq[56]:/.min_vruntime
193 Â 26% -39.5% 117 Â 45% sched_debug.cfs_rq[38]:/.tg_load_contrib
5340 Â 7% +89.5% 10118 Â 13% sched_debug.cfs_rq[48]:/.min_vruntime
6055 Â 35% +48.9% 9017 Â 13% sched_debug.cfs_rq[40]:/.min_vruntime
4871 Â 13% +78.7% 8702 Â 24% sched_debug.cfs_rq[57]:/.min_vruntime
4374 Â 13% +76.7% 7729 Â 19% sched_debug.cfs_rq[45]:/.min_vruntime
5321 Â 13% +74.7% 9297 Â 22% sched_debug.cfs_rq[59]:/.min_vruntime
4738 Â 12% +104.0% 9668 Â 6% sched_debug.cfs_rq[37]:/.min_vruntime
5426 Â 7% +80.9% 9817 Â 2% sched_debug.cfs_rq[51]:/.min_vruntime
5067 Â 18% +96.8% 9974 Â 22% sched_debug.cfs_rq[55]:/.min_vruntime
5318 Â 6% +64.7% 8757 Â 26% sched_debug.cfs_rq[42]:/.min_vruntime
5160 Â 11% +87.9% 9696 Â 5% sched_debug.cfs_rq[53]:/.min_vruntime
5208 Â 8% +81.0% 9429 Â 13% sched_debug.cfs_rq[50]:/.min_vruntime
4395 Â 26% +78.9% 7865 Â 8% sched_debug.cfs_rq[32]:/.min_vruntime
5596 Â 41% +65.5% 9264 Â 19% sched_debug.cfs_rq[49]:/.min_vruntime
540 Â 21% -37.9% 336 Â 11% sched_debug.cfs_rq[11]:/.avg->runnable_avg_sum
102 Â 39% +61.9% 165 Â 24% sched_debug.cfs_rq[37]:/.blocked_load_avg
4916 Â 7% +77.5% 8726 Â 11% sched_debug.cfs_rq[38]:/.min_vruntime
307 Â 6% +84.3% 567 Â 31% sched_debug.cfs_rq[54]:/.exec_clock
5541 Â 11% +75.9% 9746 Â 4% sched_debug.cfs_rq[60]:/.min_vruntime
5250 Â 22% +72.3% 9049 Â 13% sched_debug.cfs_rq[36]:/.min_vruntime
285 Â 2% +64.6% 470 Â 17% sched_debug.cfs_rq[37]:/.exec_clock
27 Â 42% +102.7% 55 Â 36% sched_debug.cfs_rq[6]:/.blocked_load_avg
28 Â 40% +98.3% 57 Â 35% sched_debug.cfs_rq[6]:/.tg_load_contrib
5523 Â 14% +65.3% 9129 Â 9% sched_debug.cfs_rq[52]:/.min_vruntime
1424 Â 13% +81.7% 2588 Â 41% sched_debug.cpu#50.sched_count
282 Â 6% +59.0% 448 Â 10% sched_debug.cfs_rq[43]:/.exec_clock
114 Â 18% +80.1% 206 Â 16% sched_debug.cfs_rq[48]:/.blocked_load_avg
285 Â 6% +48.3% 424 Â 9% sched_debug.cfs_rq[35]:/.exec_clock
865 Â 13% -34.0% 571 Â 21% sched_debug.cpu#55.sched_goidle
162 Â 18% -35.1% 105 Â 13% sched_debug.cfs_rq[54]:/.blocked_load_avg
2017 Â 11% -29.1% 1431 Â 16% sched_debug.cpu#55.nr_switches
2047 Â 11% -28.5% 1464 Â 16% sched_debug.cpu#55.sched_count
302 Â 14% -20.0% 242 Â 14% sched_debug.cpu#53.ttwu_local
303 Â 10% +73.7% 527 Â 38% sched_debug.cfs_rq[60]:/.exec_clock
286 Â 15% +32.1% 378 Â 13% sched_debug.cfs_rq[45]:/.exec_clock
127 Â 22% +64.6% 210 Â 17% sched_debug.cfs_rq[48]:/.tg_load_contrib
171 Â 14% -29.3% 121 Â 10% sched_debug.cfs_rq[54]:/.tg_load_contrib
92 Â 42% +72.4% 159 Â 19% sched_debug.cfs_rq[58]:/.blocked_load_avg
16297106 Â 4% +27.5% 20771822 Â 5% cpuidle.C1-NHM.time
453 Â 37% +47.9% 670 Â 8% sched_debug.cfs_rq[31]:/.avg->runnable_avg_sum
8 Â 43% +54.3% 13 Â 8% sched_debug.cfs_rq[31]:/.tg_runnable_contrib
318 Â 10% +67.0% 531 Â 42% sched_debug.cfs_rq[55]:/.exec_clock
1496 Â 14% +37.8% 2061 Â 13% sched_debug.cpu#37.sched_count
1466 Â 15% +37.8% 2019 Â 13% sched_debug.cpu#37.nr_switches
977 Â 14% +73.2% 1692 Â 49% sched_debug.cfs_rq[28]:/.exec_clock
830 Â 6% +22.0% 1013 Â 9% sched_debug.cpu#45.ttwu_count
613 Â 17% +42.8% 876 Â 16% sched_debug.cpu#37.sched_goidle
8839 Â 7% -11.4% 7828 Â 10% sched_debug.cpu#3.ttwu_count
116654 Â 6% -12.7% 101799 Â 5% meminfo.DirectMap4k
1041 Â 6% +34.3% 1399 Â 27% sched_debug.cfs_rq[29]:/.exec_clock
6.66 Â 20% +175.2% 18.32 Â 2% time.system_time
16.79 Â 7% -48.0% 8.73 Â 1% time.user_time
7 Â 0% +17.9% 8 Â 5% time.percent_of_cpu_this_job_got
98436 Â 0% +1.6% 100045 Â 0% time.voluntary_context_switches

lkp-nex04: Nehalem-EX
Memory: 256G

time.voluntary_context_switches

100500 ++-----------------------------------------------------------------+
O O O O |
| O O O |
100000 ++ O O O O O O |
| O O O O |
| O |
99500 ++ |
| |
99000 ++ |
| |
| |
98500 ++ .*.*.. .*.. .*.. .*..*.. |
*..*.*..*. *..*.*..*..*.*..*..*..*.*. * *..* *.*..*
| |
98000 ++-----------------------------------------------------------------+

[*] bisect-good sample
[O] bisect-bad sample

To reproduce:

apt-get install ruby ruby-oj
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,
Fengguang

---
testcase: netperf
default_monitors:
wait: pre-test
uptime:
iostat:
vmstat:
numa-numastat:
numa-vmstat:
numa-meminfo:
proc-vmstat:
proc-stat:
meminfo:
slabinfo:
interrupts:
lock_stat:
latency_stats:
softirqs:
bdi_dev_mapping:
diskstats:
cpuidle:
cpufreq:
turbostat:
sched_debug:
interval: 10
pmeter:
default_watchdogs:
watch-oom:
watchdog:
cpufreq_governor:
- performance
commit: 057b16997d77a23a4dd2b8e8a9bd56656afac86d
model: Nehalem-EX
memory: 256G
nr_ssd_partitions: 6
ssd_partitions: "/dev/disk/by-id/ata-INTEL_SSD*part1"
swap_partitions: "/dev/disk/by-id/ata-WDC_WD10EARS-00Y5B1_WD-WCAV5F059074-part2"
runtime: 300s
nr_threads:
- 200%
perf-profile:
freq: 800
netperf:
test:
- SCTP_STREAM
testbox: lkp-nex04
tbox_group: lkp-nex04
kconfig: x86_64-rhel
enqueue_time: 2014-12-14 00:52:11.886525322 +08:00
head_commit: 057b16997d77a23a4dd2b8e8a9bd56656afac86d
base_commit: b2776bf7149bddd1f4161f14f79520f17fc1d71d
branch: linux-devel/devel-hourly-2014121400
kernel: "/kernel/x86_64-rhel/057b16997d77a23a4dd2b8e8a9bd56656afac86d/vmlinuz-3.18.0-g057b169"
user: lkp
queue: cyclic
rootfs: debian-x86_64.cgz
result_root: "/result/lkp-nex04/netperf/performance-300s-200%-SCTP_STREAM/debian-x86_64.cgz/x86_64-rhel/057b16997d77a23a4dd2b8e8a9bd56656afac86d/0"
job_file: "/lkp/scheduled/lkp-nex04/cyclic_netperf-performance-300s-200%-SCTP_STREAM-x86_64-rhel-HEAD-057b16997d77a23a4dd2b8e8a9bd56656afac86d-0.yaml"
dequeue_time: 2014-12-14 08:50:11.387688351 +08:00
job_state: finished
loadavg: 0.16 0.22 0.14 2/526 13068
start_time: '1418518283'
end_time: '1418518586'
version: "/lkp/lkp/.src-20141214-052354"
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/cpu10/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu11/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu12/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu13/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu14/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu15/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu16/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu17/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu18/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu19/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu20/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu21/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu22/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu23/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu24/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu25/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu26/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu27/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu28/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu29/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu30/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu31/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu32/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu33/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu34/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu35/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu36/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu37/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu38/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu39/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu40/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu41/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu42/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu43/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu44/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu45/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu46/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu47/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu48/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu49/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu5/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu50/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu51/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu52/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu53/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu54/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu55/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu56/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu57/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu58/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu59/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu6/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu60/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu61/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu62/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu63/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu8/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu9/cpufreq/scaling_governor
netserver
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
netperf -t SCTP_STREAM -c -C -l 300
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