Hi all,

The problem can't be reproduced after test environment changed,
there's no regression found on this patch now, we don't know yet
why it caused a regression in September 2020, but we'll continue
to root cause.

Best Regards,
Rong Chen

On Thu, Jan 21, 2021 at 02:18:25PM +0000, Chiou, Cooper wrote:
> I run “phoronix-test-suite run supertuxkart-1.5.2” on my CML Ubuntu 18.04.5 
> LTS device, and compared the fps between patch and original upstream, there 
> is no any fps performance drop issue. 
> 
>         5.10.0-rc3 upstream /  5.10.0-rc3+patch
> fps     12.586326           /  12.687711
> 
> Best Regards,
> Cooper
> +886-2-6622-1166
> 
> -----Original Message-----
> From: kernel test robot <[email protected]> 
> Sent: Monday, September 21, 2020 5:22 PM
> To: Chiou, Cooper <[email protected]>
> Cc: [email protected]; Chiou, Cooper <[email protected]>; 
> Tseng, William <[email protected]>; Nikula, Jani 
> <[email protected]>; Chris Wilson <[email protected]>; lkp 
> <[email protected]>; Ville Syrjälä <[email protected]>; Vivi, 
> Rodrigo <[email protected]>; Tvrtko Ursulin 
> <[email protected]>; Lee, Shawn C <[email protected]>; LKML 
> <[email protected]>; [email protected]; Huang, Ying 
> <[email protected]>; Tang, Feng <[email protected]>; Xing, Zhengjun 
> <[email protected]>; Chen, Guobing <[email protected]>; Chen, Ming 
> A <[email protected]>; Du, Frank <[email protected]>; Fan, Shuhua 
> <[email protected]>; Guo, Wangyang <[email protected]>; Huang, 
> Wenhuan <[email protected]>; Ji, Jessica <[email protected]>; Kang, 
> Shan <[email protected]>; Li, Guangli <[email protected]>; Li, Tiejun 
> <[email protected]>; Ma, Yu <[email protected]>; Mi, Dapeng1 
> <[email protected]>; Sun, Jiebin <[email protected]>; Xie, Gengxin 
> <[email protected]>; Zhao, Fan <[email protected]>
> Subject: [drm/i915] 04ff178484: 
> phoronix-test-suite.supertuxkart.1024x768.Fullscreen.Ultimate.1.GranParadisoIsland.frames_per_second
>  -30.4% regression
> 
> Greeting,
> 
> FYI, we noticed a -30.4% regression of 
> phoronix-test-suite.supertuxkart.1024x768.Fullscreen.Ultimate.1.GranParadisoIsland.frames_per_second
>  due to commit:
> 
> 
> commit: 04ff1784840f5f954a656c7e8795c76467e29128 ("[Intel-gfx] [PATCH] 
> drm/i915: Enable WaProgramMgsrForCorrectSliceSpecificMmioReads for Gen9")
> url: 
> https://github.com/0day-ci/linux/commits/Cooper-Chiou/drm-i915-Enable-WaProgramMgsrForCorrectSliceSpecificMmioReads-for-Gen9/20200917-021540
> base: git://anongit.freedesktop.org/drm-intel for-linux-next
> 
> in testcase: phoronix-test-suite
> on test machine: 4 threads Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz with 32G 
> memory with following parameters:
> 
>       need_x: true
>       test: supertuxkart-1.5.2
>       option_a: Fullscreen
>       option_b: Ultimate
>       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/
> 
> 
> 
> 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 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/Ultimate/1/Gran Paradiso 
> Island [Approximately 275k triangles; advanced 
> graphics]/debian-x86_64-phoronix/lkp-kbl-nuc1/supertuxkart-1.5.2/phoronix-test-suite/0xd6
> 
> commit: 
>   400d4953f1 ("drm/i915/pll: Centralize PLL_ENABLE register lookup")
>   04ff178484 ("drm/i915: Enable WaProgramMgsrForCorrectSliceSpecificMmioReads 
> for Gen9")
> 
> 400d4953f1f434d5 04ff1784840f5f954a656c7e879
> ---------------- --------------------------- 
>          %stddev     %change         %stddev
>              \          |                \  
>      35.32           -30.4%      24.59        
> phoronix-test-suite.supertuxkart.1024x768.Fullscreen.Ultimate.1.GranParadisoIsland.frames_per_second
>       3638 ± 15%     -39.2%       2211 ±  4%  
> phoronix-test-suite.time.involuntary_context_switches
>      32.00           -30.5%      22.25        
> phoronix-test-suite.time.percent_of_cpu_this_job_got
> 
> 
>                                                                               
>   
>                                                                               
>   
>                                                                               
>   
>   36 +----------------------------------------------------------------------+ 
>   
>      |.+.+..+.+.+.+..+.+.+.+.+..+.+.+.+..+.+.+.+.+..+.+.+.+.+..+   +.+..+.+.| 
>   
>   34 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>      |                                                                      | 
>   
>   32 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>   30 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>   28 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>      |                                                                      | 
>   
>   26 |-+                                                                    | 
>   
>      | O O  O O O O  O O O O O  O O O O  O O O O O  O O                     | 
>   
>   24 +----------------------------------------------------------------------+ 
>   
>                                                                               
>   
>                                                                               
>                                                                               
>     
>               phoronix-test-suite.time.percent_of_cpu_this_job_got            
>   
>                                                                               
>   
>   32 +----------------------------------------------------------------------+ 
>   
>      |               +       +.              +      +   +.+.+.              | 
>   
>   30 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>      |                                                                      | 
>   
>   28 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>   26 |-+                                                                    | 
>   
>      |                                                                      | 
>   
>   24 |-+                                                                    | 
>   
>      |                                   O       O                          | 
>   
>      |                                                                      | 
>   
>   22 |-O O  O O   O  O O O O O  O O O O    O O O    O O                     | 
>   
>      |          O                                                           | 
>   
>   20 +----------------------------------------------------------------------+ 
>   
>                                                                               
>   
>                                                                               
>   
> [*] 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,
> Rong Chen
> 
> _______________________________________________
> Intel-gfx mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

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