[Bug 109171] AMD's GPU is Slower than Intel's

[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

            Bug ID: 109171
           Summary: AMD's GPU is Slower than Intel's
           Product: Mesa
           Version: 18.2
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: ali.sherif10@yahoo.com
        QA Contact: dri-devel@lists.freedesktop.org

glxgears and CS: Go are much slower with AMD's GPU. Performance's much higher
with Intel's.

Outputs:
$ glxgears
306 frames in 5.0 seconds = 61.029 FPS
299 frames in 5.0 seconds = 59.761 FPS
299 frames in 5.0 seconds = 59.762 FPS
299 frames in 5.0 seconds = 59.762 FPS
299 frames in 5.0 seconds = 59.762 FPS

$ DRI_PRIME=1 glxgears
304 frames in 5.0 seconds = 60.666 FPS
299 frames in 5.0 seconds = 59.762 FPS
299 frames in 5.0 seconds = 59.762 FPS
299 frames in 5.0 seconds = 59.763 FPS
299 frames in 5.0 seconds = 59.760 FPS

$ vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
32606 frames in 5.0 seconds = 6521.047 FPS
31516 frames in 5.0 seconds = 6302.010 FPS
32145 frames in 5.0 seconds = 6428.891 FPS
31443 frames in 5.0 seconds = 6288.595 FPS
31029 frames in 5.0 seconds = 6205.721 FPS

$ DRI_PRIME=1 vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
12031 frames in 5.0 seconds = 2406.195 FPS
10110 frames in 5.0 seconds = 2021.870 FPS
10122 frames in 5.0 seconds = 2022.474 FPS
9782 frames in 5.0 seconds = 1956.206 FPS
10175 frames in 5.0 seconds = 2034.901 FPS


Laptop: HP Pavilion g6.
AMD's GPU: Radeon HD 7670M.
OS: 64-bit Linux (Fedora 29 KDE Spin).

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #1 from Sherif <ali.sherif10@yahoo.com> ---
CS: Go is faster with Intel's GPU even without vblank_mode=0.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your xorg log and dmesg output.  Note that using the dGPU
involves extra copies to copy the rendered frame to the integrated GPU for
display so there is additional overhead.  You need a relatively advanced 3D
game to see an advantage on the dGPU as you have to overcome the overhead of
the additional copies.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #3 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142914
  --> https://bugs.freedesktop.org/attachment.cgi?id=142914&action=edit
Xorg log files.

I attached all files.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

Sherif <ali.sherif10@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://bugzilla.redhat.com
                   |                            |/show_bug.cgi?id=1662535

--- Comment #4 from Sherif <ali.sherif10@yahoo.com> ---
I reported it in Fedora Bugzilla, also. Please, check.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #5 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142951
  --> https://bugs.freedesktop.org/attachment.cgi?id=142951&action=edit
I used something like dmesg | vim.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #6 from Sherif <ali.sherif10@yahoo.com> ---
Sorry, I didn't pay attention to the dmesg part.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #7 from Christian König <christian.koenig@amd.com> ---
The dmesg is only a fraction. Please provide the full dmesg directly after
boot.

That glxgears is getting slower numbers on the secondary GPU is perfectly
normal. It is a test how fast we can page flip and not how fast the GPU is.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

Sherif <ali.sherif10@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #142951|0                           |1
        is obsolete|                            |

--- Comment #8 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142953
  --> https://bugs.freedesktop.org/attachment.cgi?id=142953&action=edit
Output of dmesg.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #9 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142954
  --> https://bugs.freedesktop.org/attachment.cgi?id=142954&action=edit
Output of DRI_PRIME=1 dmesg

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #10 from Sherif <ali.sherif10@yahoo.com> ---
I restarted, logged into KDE then $ dmesg >> dmesg. After a minute, $
DRI_PRIME=1 dmesg >> dmesg2. Did I do it correctly?

(In reply to Alex Deucher from comment #2)
> You need a relatively advanced 3D game to see an advantage on the dGPU as you
>  have to overcome the overhead of the additional copies.

Counter-Strike: Global Offensive is much slower, when I run Steam with
DRI_PRIME=1.

Additional Info:
I installed Steam from RPMFusion.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #11 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142955
  --> https://bugs.freedesktop.org/attachment.cgi?id=142955&action=edit
Steam output wit Intel's GPU.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #12 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142956
  --> https://bugs.freedesktop.org/attachment.cgi?id=142956&action=edit
Steam output wit AMD's GPU.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #13 from Sherif <ali.sherif10@yahoo.com> ---
I found that only CS: GO's main GUI is slow with AMD's GPU, but it's much
faster during matches. On Intel's GPU, the main GUI's smooth, but there's some
lag during matches.
I tried the tutorial only.

On both cases, fullscreen was enabled.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #14 from Sherif <ali.sherif10@yahoo.com> ---
Note: I played CS: GO during recording Steam's output.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

--- Comment #15 from Sherif <ali.sherif10@yahoo.com> ---
Created attachment 142957
  --> https://bugs.freedesktop.org/attachment.cgi?id=142957&action=edit
glxinfo with(out) DRI_PRIME=1.

This can help.

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[Bug 109171] AMD's GPU is Slower than Intel's

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https://bugs.freedesktop.org/show_bug.cgi?id=109171

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

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

--- Comment #16 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/649.

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