[Intel-gfx] [drm/i915/gem] 59dd13ad31: phoronix-test-suite.jxrendermark.RadialGradientPaint.1024x1024.operations_per_second -54.0% regression

[Joonas Lahtinen]

+ intel-gfx

Quoting Rong Chen (2020-12-10 08:54:59)
> 
> 
> On 11/13/20 10:27 PM, Joonas Lahtinen wrote:
> > Hi,
> >
> > Could you add intel-gfx at lists.freedesktop.org into reports going
> > forward.
> 
> Hi Joonas,
> 
> Sorry for the late, which kind of issue that needs to be forwarded?

When sending the regression notifications, it would be useful to include
the mailing lists from MAINTAINERS file based on the files being touched
by the bisected commit.

That would help bringing the right attention and be especially important
for the cases where the patch author has become inactive (changed jobs
or e-mail, etc.)

Regards, Joonas

> Best Regards,
> Rong Chen
> 
> >
> > Quoting kernel test robot (2020-11-11 17:58:11)
> >> Greeting,
> >>
> >> FYI, we noticed a -54.0% regression of phoronix-test-suite.jxrendermark.RadialGradientPaint.1024x1024.operations_per_second due to commit:
> > How many runs are there on the bad version to ensure the bisect is
> > repeatable?
> >
> > According to Chris test has various factors affecting why the result
> > could fluctuate and has been known. Reverting the patch did not have
> > an effect on the benchmark and was not expected to do so, either.
> >
> > Is there some mechanism to queue a re-run?
> >
> > Would it make sense to do further runs before sending out the e-mail
> > to avoid false positives.
> >
> > It could of course be also solved by sticking to tests that have less
> > fluctuation in them.
> >
> > Regards, Joonas
> >
> >>
> >> commit: 59dd13ad310793757e34afa489dd6fc8544fc3da ("drm/i915/gem: Flush coherency domains on first set-domain-ioctl")
> >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> >>
> >>
> >> 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: jxrendermark-1.2.4
> >>          option_a: Radial Gradient Paint
> >>          option_b: 1024x1024
> >>          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/
> >>
> >>
> >>
> >> If you fix the issue, kindly add following tag
> >> Reported-by: kernel test robot <oliver.sang at intel.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/rootfs/tbox_group/test/testcase/ucode:
> >>    gcc-9/performance/x86_64-rhel-8.3/true/Radial Gradient Paint/1024x1024/debian-x86_64-phoronix/lkp-cfl-d1/jxrendermark-1.2.4/phoronix-test-suite/0xd6
> >>
> >> commit:
> >>    0dccdba51e ("Merge tag 'gvt-fixes-2020-10-30' of https://github.com/intel/gvt-linux into drm-intel-fixes")
> >>    59dd13ad31 ("drm/i915/gem: Flush coherency domains on first set-domain-ioctl")
> >>
> >> 0dccdba51e852271 59dd13ad310793757e34afa489d
> >> ---------------- ---------------------------
> >>           %stddev     %change         %stddev
> >>               \          |                \
> >>        8980 ±  2%     -54.0%       4127        phoronix-test-suite.jxrendermark.RadialGradientPaint.1024x1024.operations_per_second
> >>        9.00           +13.9%      10.25 ±  4%  phoronix-test-suite.time.percent_of_cpu_this_job_got
> >>
> >>
> >>                                                                                  
> >>                                                                                  
> >>                                                                                  
> >>    10000 +-------------------------------------------------------------------+
> >>          |                                                                   |
> >>     9000 |-+.+. .+.+.+.+.+.   .+. .+.   .+. .+.+.     .+. .+.   .+. .+.+.   .|
> >>          |.+   +           +.+   +   +.+   +     +.+.+   +   +.+   +     +.+ |
> >>          |                                                                   |
> >>     8000 |-+                                                                 |
> >>          |                                                                   |
> >>     7000 |-+                                                                 |
> >>          |                                                                   |
> >>     6000 |-+                                                                 |
> >>          |                                                                   |
> >>          |                                                                   |
> >>     5000 |-+                                                                 |
> >>          |                                 O                                 |
> >>     4000 +-------------------------------------------------------------------+
> >>                                                                                  
> >>                                                                                  
> >> [*] 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,
> >> Oliver Sang
> >>
>