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Date: Wed, 7 Jul 2021 17:22:30 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Guru Das Srinagesh <gurus@...eaurora.org>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, ying.huang@...el.com, feng.tang@...el.com,
zhengjun.xing@...ux.intel.com,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
Waiman Long <longman@...hat.com>,
Boqun Feng <boqun.feng@...il.com>,
Guru Das Srinagesh <gurus@...eaurora.org>
Subject: [spinlock_debug] 0263428b26:
kernel-selftests.dma.dma_map_benchmark.average_unmap_latency 87.5%
regression
Greeting,
FYI, we noticed a 87.5% regression of kernel-selftests.dma.dma_map_benchmark.average_unmap_latency due to commit:
commit: 0263428b26d26ba8f2edc28f65181c4ab3aefc8b ("[RFC PATCH] spinlock_debug: Save stacktrace at lock acquisition")
url: https://github.com/0day-ci/linux/commits/Guru-Das-Srinagesh/spinlock_debug-Save-stacktrace-at-lock-acquisition/20210630-092833
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git 0e8a89d49d45197770f2e57fb15f1bc9ded96eb0
in testcase: kernel-selftests
on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz with 32G memory
with following parameters:
group: group-01
ucode: 0xe2
test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
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 # generate the yaml file for lkp run
bin/lkp run generated-yaml-file
=========================================================================================
compiler/group/kconfig/rootfs/tbox_group/testcase/ucode:
gcc-9/group-01/x86_64-rhel-8.3-kselftests/debian-10.4-x86_64-20200603.cgz/lkp-skl-d05/kernel-selftests/0xe2
commit:
0e8a89d49d ("locking/lockdep: Correct the description error for check_redundant()")
0263428b26 ("spinlock_debug: Save stacktrace at lock acquisition")
0e8a89d49d451977 0263428b26d26ba8f2edc28f651
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.70 +85.7% 1.30 kernel-selftests.dma.dma_map_benchmark.average_map_latency
1.02 ± 10% +57.4% 1.60 kernel-selftests.dma.dma_map_benchmark.average_map_latency_stddev
0.53 ± 8% +87.5% 1.00 kernel-selftests.dma.dma_map_benchmark.average_unmap_latency
0.93 ± 5% +54.6% 1.44 ± 3% kernel-selftests.dma.dma_map_benchmark.average_unmap_latency_stddev
629.81 +51.8% 956.18 kernel-selftests.time.elapsed_time
629.81 +51.8% 956.18 kernel-selftests.time.elapsed_time.max
19380 ± 11% +19.5% 23151 ± 10% kernel-selftests.time.involuntary_context_switches
10274 +16.0% 11916 ± 5% kernel-selftests.time.maximum_resident_set_size
2165658 -1.7% 2129319 kernel-selftests.time.minor_page_faults
41.83 +34.2% 56.14 kernel-selftests.time.percent_of_cpu_this_job_got
253.76 +108.0% 527.81 kernel-selftests.time.system_time
64175 +104.3% 131100 ± 5% kernel-selftests.time.voluntary_context_switches
1510 -15.6% 1275 ± 2% meminfo.Active(anon)
420666 ± 2% -20.7% 333726 ± 2% meminfo.DirectMap4k
136525 +50.3% 205189 meminfo.KReclaimable
136525 +50.3% 205189 meminfo.SReclaimable
42313 +14.2% 48332 meminfo.SUnreclaim
13834 -12.5% 12106 meminfo.Shmem
178839 +41.8% 253522 meminfo.Slab
290239 ± 4% -18.9% 235393 ± 6% meminfo.VmallocUsed
kernel-selftests.time.system_time
600 +---------------------------------------------------------------------+
| O O O O |
500 |-OO O O OOOOOOO OO O OOO OOO OO OOO |
| |
| |
400 |-+ |
| |
300 |-+ |
|++ + +++ ++ +++ + + ++++++++++++++++++++ ++++++ + ++ ++ ++++ ++ |
200 |:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|::: :: :: ::::: ::::::: ::: ::: : ::::: : ::::|
100 |-:: : :: : : :: :: : : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0 +---------------------------------------------------------------------+
kernel-selftests.time.percent_of_cpu_this_job_got
60 +----------------------------------------------------------------------+
| OOO O O OOOO OOO O O OOOOOO OO OOOOO OO |
50 |-+ |
| |
|++ + +++ + +++ ++ +++++++++++++++++++++++ ++++++ +++ ++ ++++ ++ |
40 |:: : ::: : ::: :: :: :: : :: : : :: :::: :: |
|:: : ::: : ::: :: :: :: : :: : : :: :::: :: |
30 |:: : ::: : ::: :: :: :: : :: : : :: :::: :: |
|:: : ::: : ::: :: :: :: : :: : : :: :::: :: |
20 |::: :: :: ::::: :::: :: :::: :: : ::::: : ::::|
| :: : :: : : :: :: ::: : : :: : : :: : : ::|
| :: : :: : : :: :: ::: : : :: : : :: : : ::|
10 |-:: : :: : : :: :: ::: : : :: : : :: : : ::|
| :: : :: : : :: :: ::: : : :: : : :: : : ::|
0 +----------------------------------------------------------------------+
kernel-selftests.time.elapsed_time
1000 +--------------------------------------------------------------------+
900 |-OOOO OO OOOOOO OOO OOO O O OOOOOO OO |
| |
800 |-+ |
700 |-+ |
|++ ++ +++ ++ + + + + +++++++++++++++++++ ++++++ + ++ + +++ + ++ |
600 |:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
500 |:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
400 |:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
|:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
300 |-:: : ::: :: : : ::: : : : : : : : :: : : ::|
200 |-:: : ::: :: : : ::: : : : : : : : :: : : ::|
| :: : ::: :: : : ::: : : : : : : : :: : : ::|
100 |-:: : ::: :: : : ::: : : : : : : : :: : : ::|
0 +--------------------------------------------------------------------+
kernel-selftests.time.elapsed_time.max
1000 +--------------------------------------------------------------------+
900 |-OOOO OO OOOOOO OOO OOO O O OOOOOO OO |
| |
800 |-+ |
700 |-+ |
|++ ++ +++ ++ + + + + +++++++++++++++++++ ++++++ + ++ + +++ + ++ |
600 |:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
500 |:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
400 |:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
|:: :: ::: :: : : : : : : :: : : :: : ::: : :: |
300 |-:: : ::: :: : : ::: : : : : : : : :: : : ::|
200 |-:: : ::: :: : : ::: : : : : : : : :: : : ::|
| :: : ::: :: : : ::: : : : : : : : :: : : ::|
100 |-:: : ::: :: : : ::: : : : : : : : :: : : ::|
0 +--------------------------------------------------------------------+
kernel-selftests.time.voluntary_context_switches
160000 +------------------------------------------------------------------+
| O O |
140000 |-OOOO OO OO O O O O O OO O O |
120000 |-+ O O O O O O O O O |
| |
100000 |-+ |
| |
80000 |-+ |
|++ ++ + +++ +++ + + +++++++++++++++++++ +++++++ ++ + +++ + ++ |
60000 |:: :: : ::: ::: +: : : : :: :: : +: ::: : :: |
40000 |:: :: : ::: ::: :: : : : :: :: : :: ::: : :: |
|::: : ::::::::: ::::::: ::: :: : ::::: ::::::|
20000 |-:: : ::: : :: :: ::: :: :: : :: : : : ::|
| :: : ::: : :: :: ::: :: :: : :: : : : ::|
0 +------------------------------------------------------------------+
kernel-selftests.dma.dma_map_benchmark.average_map_latency
1.4 +---------------------------------------------------------------------+
| OOO O O OOOOOOOOOO O OOO OOO O OO OOO O |
1.2 |-+ |
| |
1 |-+ |
| |
0.8 |-+ |
|++ + +++ ++ +++ + + ++++++++++++++++++++ ++++++ + ++ ++ ++++ ++ |
0.6 |:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
0.4 |:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0.2 |-:: : :: : : :: :: : : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0 +---------------------------------------------------------------------+
kernel-selftests.dma.dma_map_benchmark.average_map_latency_stddev
1.6 +---------------------------------------------------------------------+
| O OO O O |
1.4 |-+ |
1.2 |-+ + + + ++ +++ ++ +++ + +++ + + |
| : + + : :+ +++ + :: : +: : : + : : + + + +: : + |
1 |+: : :+: :: ::: : :+++ + + ++++ +: +: + : ++ :: +:+: + |
|:: : ::: :: ::: + : : + + : :: : : :: :: :::: :+ |
0.8 |:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
0.6 |::: : : :: : ::: ::: :: :: : :: :: :::: : ::: |
0.4 |-:: : :: : : :: :::: : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0.2 |-:: : :: : : :: :: : : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0 +---------------------------------------------------------------------+
kernel-selftests.dma.dma_map_benchmark.average_unmap_latency
1 +---------------------------------------------------------------------+
| |
| |
0.8 |-+ |
| |
| |
0.6 |-+ + + + ++ + ++++ + + + +++ ++ + + |
|+: : ++: :+ +++ + + :++++++ + ++++ + +: +: ++ + ++ :: +:+: ++ |
0.4 |:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|::: :: :: ::: ::: : : : ::: : : :: :::: : ::: |
0.2 |-:: : :: : : :: :: : : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0 +---------------------------------------------------------------------+
kernel-selftests.dma.dma_map_benchmark.average_unmap_latency_stddev
1.6 +---------------------------------------------------------------------+
| O O O OO O OO |
1.4 |-OOO O OOOOOOOOO O O O O OO O O |
1.2 |-+ O |
| + ++ + + + + + + |
1 |-+ + : + :: +++ : :+ ++ +:+ +++ + + ++ + + ++ + + |
|+: : :+: :: ::: + : :+++++ + ++++ +: +: + : ++ :: +:+: ++ |
0.8 |:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
|:: : ::: :: ::: : : : : :: : : :: :: :::: :: |
0.6 |:: : ::: :::::: : ::: : :: : : :: :: :::: :: |
0.4 |::: : :: : : :: :::: : :: : : : : ::: : ::::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0.2 |-:: : :: : : :: :: : : :: : : : : :: : : ::|
| :: : :: : : :: :: : : :: : : : : :: : : ::|
0 +---------------------------------------------------------------------+
[*] 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/lkp@lists.01.org Intel Corporation
Thanks,
Rong Chen
View attachment "config-5.13.0-rc1-00129-g0263428b26d2" of type "text/plain" (175421 bytes)
View attachment "job-script" of type "text/plain" (7267 bytes)
View attachment "job.yaml" of type "text/plain" (6324 bytes)
View attachment "reproduce" of type "text/plain" (838 bytes)
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