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Date: Wed, 21 Oct 2020 17:26:03 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Karthik B S <karthik.b.s@...el.com>
Cc: Ville Syrjälä <ville.syrjala@...ux.intel.com>,
Vandita Kulkarni <vandita.kulkarni@...el.com>,
LKML <linux-kernel@...r.kernel.org>,
intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
lkp@...ts.01.org, lkp@...el.com, ying.huang@...el.com,
feng.tang@...el.com, zhengjun.xing@...el.com,
guobing.chen@...el.com, ming.a.chen@...el.com, frank.du@...el.com,
Shuhua.Fan@...el.com, wangyang.guo@...el.com,
Wenhuan.Huang@...el.com, jessica.ji@...el.com, shan.kang@...el.com,
guangli.li@...el.com, tiejun.li@...el.com, yu.ma@...el.com,
dapeng1.mi@...el.com, jiebin.sun@...el.com, gengxin.xie@...el.com,
fan.zhao@...el.com
Subject: [drm/i915] 55ea1cb178:
phoronix-test-suite.supertuxkart.1280x1024.Fullscreen.Basic.1.GranParadisoIsland.frames_per_second
-12.7% regression
Greeting,
FYI, we noticed a -12.7% regression of phoronix-test-suite.supertuxkart.1280x1024.Fullscreen.Basic.1.GranParadisoIsland.frames_per_second due to commit:
commit: 55ea1cb178ef85677b35126685fbf5d8d649b62e ("drm/i915: Enable async flips in i915")
git://anongit.freedesktop.org/drm-intel drm-intel-next-queued
in testcase: phoronix-test-suite
on test machine: 12 threads Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 8G memory
with following parameters:
need_x: true
test: supertuxkart-1.5.2
option_a: Fullscreen
option_b: Basic
option_c: 1
option_d: Gran Paradiso Island [Approximately 275k triangles; advanced graphics]
cpufreq_governor: performance
ucode: 0xd6
test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added.
test-url: http://www.phoronix-test-suite.com/
In addition to that, the commit also has significant impact on the following tests:
+------------------+--------------------------------------------------------------------------------------------------------------------------------------+
| testcase: change | phoronix-test-suite: phoronix-test-suite.gputest.Plot3D.1280x1024.Windowed.points 5.9% regression |
| test machine | 12 threads Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 8G memory |
| test parameters | cpufreq_governor=performance |
| | need_x=true |
| | option_a=Plot3D |
| | option_b=Windowed |
| | test=gputest-1.3.2 |
| | ucode=0xd6 |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------+
| testcase: change | phoronix-test-suite: phoronix-test-suite.supertuxkart.1280x1024.Fullscreen.Ultimate.1.CandelaCity.frames_per_second 2.4% improvement |
| test machine | 12 threads Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 8G memory |
| test parameters | cpufreq_governor=performance |
| | need_x=true |
| | option_a=Fullscreen |
| | option_b=Ultimate |
| | option_c=1 |
| | option_d=Candela City [Approximately 400k triangles; advanced graphics] |
| | test=supertuxkart-1.5.2 |
| | ucode=0xd6 |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------+
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 run job.yaml
=========================================================================================
compiler/cpufreq_governor/kconfig/need_x/option_a/option_b/option_c/option_d/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-8.3/true/Fullscreen/Basic/1/Gran Paradiso Island [Approximately 275k triangles; advanced graphics]/debian-x86_64-phoronix/lkp-cfl-d1/supertuxkart-1.5.2/phoronix-test-suite/0xd6
commit:
6914c9685e ("Documentation/gpu: Add asynchronous flip documentation for i915")
55ea1cb178 ("drm/i915: Enable async flips in i915")
6914c9685e0a2376 55ea1cb178ef85677b35126685f
---------------- ---------------------------
%stddev %change %stddev
\ | \
252.40 -12.7% 220.41 phoronix-test-suite.supertuxkart.1280x1024.Fullscreen.Basic.1.GranParadisoIsland.frames_per_second
25367 ± 68% +183.7% 71956 ± 28% phoronix-test-suite.time.involuntary_context_switches
92.25 +2.2% 94.25 phoronix-test-suite.time.percent_of_cpu_this_job_got
260 +---------------------------------------------------------------------+
| |
255 |.+.+. +.+. .++. .+.+. .++.+.+.+.+. .+ .+. .+.+.+ .+.++. .+.|
250 |-+ + +.+.+ + + + + + +.+. .+ + |
| + |
245 |-+ |
240 |-+ |
| |
235 |-+ |
230 |-+ |
| |
225 |-+ O O O |
220 |-O O O O O O O O O O O O O OO O O O OO |
| O O O O O O O |
215 +---------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
***************************************************************************************************
lkp-cfl-d1: 12 threads Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 8G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/need_x/option_a/option_b/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-8.3/true/Plot3D/Windowed/debian-x86_64-phoronix/lkp-cfl-d1/gputest-1.3.2/phoronix-test-suite/0xd6
commit:
6914c9685e ("Documentation/gpu: Add asynchronous flip documentation for i915")
55ea1cb178 ("drm/i915: Enable async flips in i915")
6914c9685e0a2376 55ea1cb178ef85677b35126685f
---------------- ---------------------------
%stddev %change %stddev
\ | \
8937 +5.9% 9466 phoronix-test-suite.gputest.Plot3D.1280x1024.Windowed.points
750.25 ± 14% +25.7% 943.00 ± 5% phoronix-test-suite.time.involuntary_context_switches
17310 -3.6% 16684 phoronix-test-suite.time.major_page_faults
10.00 +20.0% 12.00 ± 5% phoronix-test-suite.time.percent_of_cpu_this_job_got
13.36 +24.2% 16.59 ± 5% phoronix-test-suite.time.user_time
62842 +89.3% 118984 phoronix-test-suite.time.voluntary_context_switches
***************************************************************************************************
lkp-cfl-d1: 12 threads Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 8G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/need_x/option_a/option_b/option_c/option_d/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-8.3/true/Fullscreen/Ultimate/1/Candela City [Approximately 400k triangles; advanced graphics]/debian-x86_64-phoronix/lkp-cfl-d1/supertuxkart-1.5.2/phoronix-test-suite/0xd6
commit:
6914c9685e ("Documentation/gpu: Add asynchronous flip documentation for i915")
55ea1cb178 ("drm/i915: Enable async flips in i915")
6914c9685e0a2376 55ea1cb178ef85677b35126685f
---------------- ---------------------------
%stddev %change %stddev
\ | \
16.54 +2.4% 16.93 phoronix-test-suite.supertuxkart.1280x1024.Fullscreen.Ultimate.1.CandelaCity.frames_per_second
2734 ± 3% -6.0% 2569 phoronix-test-suite.time.involuntary_context_switches
43.97 -4.2% 42.13 phoronix-test-suite.time.user_time
296118 -1.1% 292950 phoronix-test-suite.time.voluntary_context_switches
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,
Rong Chen
View attachment "config-5.9.0-rc4-00908-g55ea1cb178ef85" of type "text/plain" (170313 bytes)
View attachment "job-script" of type "text/plain" (7764 bytes)
View attachment "job.yaml" of type "text/plain" (5312 bytes)
View attachment "reproduce" of type "text/plain" (304 bytes)
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