[Bug 79842] New: Performance drop since mesa 10.1.4

[Bug 79842] New: Performance drop since mesa 10.1.4

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https://bugs.freedesktop.org/show_bug.cgi?id=79842

          Priority: medium
            Bug ID: 79842
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Performance drop since mesa 10.1.4
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: kontakt@ib-guder.de
          Hardware: Other
            Status: NEW
           Version: 10.1
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Created attachment 100755
  --> https://bugs.freedesktop.org/attachment.cgi?id=100755&action=edit
The results from fumark benchmark

Hello.

I've noticed a performancedrop since mesa 10.1.4 (and also with 10.2.1 now). I
ran fumark_benchmark and unigine_valley. I append the results for fumark. I
don't know if it is kernel or mesa problem.

I use radeonsi.

Best regards!
Tom

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[Bug 79842] Performance drop since mesa 10.1.4

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https://bugs.freedesktop.org/show_bug.cgi?id=79842

--- Comment #1 from Tom Guder <kontakt@ib-guder.de> ---
Created attachment 100756
  --> https://bugs.freedesktop.org/attachment.cgi?id=100756&action=edit
Unigine Valley good

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[Bug 79842] Performance drop since mesa 10.1.4

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https://bugs.freedesktop.org/show_bug.cgi?id=79842

--- Comment #2 from Tom Guder <kontakt@ib-guder.de> ---
Created attachment 100757
  --> https://bugs.freedesktop.org/attachment.cgi?id=100757&action=edit
Unigine Valley worse

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[Bug 79842] Performance drop since mesa 10.1.4

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https://bugs.freedesktop.org/show_bug.cgi?id=79842

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> ---
Can you bisect?

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[Bug 79842] Performance drop since mesa 10.1.4

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https://bugs.freedesktop.org/show_bug.cgi?id=79842

--- Comment #4 from Grigori Goronzy <greg@chown.ath.cx> ---
Probably related to this:

http://cgit.freedesktop.org/mesa/mesa/commit/?h=10.1&id=1ba2298131924daf34b4504ba748a782c5189f48

Anisotropic filtering was broken in radeonsi, and that fixed it. Anisotropic
filtering has some overhead, which explains the slightly reduced performance.

This patch was applied to 10.1 and 10.2 branches as well as master.

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[Bug 79842] Performance drop since mesa 10.1.4

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https://bugs.freedesktop.org/show_bug.cgi?id=79842

Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #5 from Marek Olšák <maraeo@gmail.com> ---
(In reply to Grigori Goronzy from comment #4)
> Probably related to this:
> 
> http://cgit.freedesktop.org/mesa/mesa/commit/?h=10.
> 1&id=1ba2298131924daf34b4504ba748a782c5189f48
> 
> Anisotropic filtering was broken in radeonsi, and that fixed it. Anisotropic
> filtering has some overhead, which explains the slightly reduced performance.
> 
> This patch was applied to 10.1 and 10.2 branches as well as master.

Makes sense. Anisotropic filtering can indeed decrease performance a lot.
Closing.

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