Greeting,
FYI, we noticed a -2.9% regression of unixbench.score due to commit:
commit: c79fc8b482c2043b312f63f68c57e311daac4a23 ("sched,rcu: Make cond_resched()
provide RCU quiescent state")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: unixbench
on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 4G memory
with following parameters:
runtime: 300s
nr_task: 1
test: pipe
cpufreq_governor: performance
test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test
performance of Unix-like system.
test-url:
https://github.com/kdlucas/byte-unixbench
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone
https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
testcase/path_params/tbox_group/run: unixbench/300s-1-pipe-performance/lkp-ivb-d04
8be6e1b15c544021 c79fc8b482c2043b312f63f68c
---------------- --------------------------
%stddev change %stddev
\ | \
1725 -2.9% 1674 unixbench.score
9169032 9041678 perf-stat.context-switches
23440 23172 vmstat.system.cs
unixbench.score
1800 *+**-*-**-*----**-*-**-*-**-*-**-*-**-**-*-**-*-**-*-**-*-**-**------+
O OO OO O *O OO O OO O OO O OO O OO OO O OO O OO O O *.**.*
1600 ++ |
1400 ++ |
| |
1200 ++ |
1000 ++ |
| |
800 ++ |
600 ++ |
| |
400 ++ |
200 ++ |
| |
0 ++---O------O--------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
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,
Xiaolong