Greeting,
FYI, we noticed a -4.0% regression of stress-ng.sigpending.ops_per_sec due to commit:
commit: f83d2f91d2590318e083d05bd7b1beda2489050e ("perf/x86/intel: Add Alder Lake Hybrid support")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git perf/core
in testcase: stress-ng
on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory
with following parameters:
nr_threads: 10%
disk: 1HDD
testtime: 60s
fs: ext4
class: os
test: sigpending
cpufreq_governor: performance
ucode: 0x5003006
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <[email protected]>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml
bin/lkp run compatible-job.yaml
=========================================================================================
class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
os/gcc-9/performance/1HDD/ext4/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp5/sigpending/stress-ng/60s/0x5003006
commit:
3e9a8b219e ("perf/x86: Support filter_match callback")
f83d2f91d2 ("perf/x86/intel: Add Alder Lake Hybrid support")
3e9a8b219e4cc897 f83d2f91d2590318e083d05bd7b
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:14 7% 1:14 kmsg.Spurious_LAPIC_timer_interrupt_on_cpu
%stddev %change %stddev
\ | \
4036204 ? 10% -4.0% 3873163 ? 6% stress-ng.sigpending.ops_per_sec
446.47 ? 9% +4.2% 465.36 stress-ng.time.system_time
stress-ng.sigpending.ops_per_sec
4e+06 +-----------------------------------------------------------------+
|.++.+.++. +. +.+.++. +. .++.+.++.+. .+.++.+.+ |
3.8e+06 |-+ +.+.+ +.+ +.+ +.+ ++.+.++.+ :+|
3.6e+06 |-+ OO O OO O OO O O OO O OO O OO O OO O + |
| OO O OO O OO O |
3.4e+06 |-+ |
3.2e+06 |-+ |
| |
3e+06 |-+ |
2.8e+06 |-+ |
| |
2.6e+06 |-+ |
2.4e+06 |-+ |
| O |
2.2e+06 +-----------------------------------------------------------------+
[*] 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.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/[email protected] Intel Corporation
Thanks,
Oliver Sang