[Bug 82201] [HAWAII] GPU doesn't reclock, poor 3D performance

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Aug 5 12:55:38 PDT 2014


--- Comment #10 from Kai <kai at dev.carbon-project.org> ---
(In reply to comment #8)
> dpm is enabled by default for hawaii asics.  You shouldn't need to force it
> on the command line.  forcing it just enabled additional debugging output.

I can only state, that by setting radeon.dpm=1 I get 60 FPS in e.g. Portal 2
and without I'm at 15 FPS max. As written in comment #0, I've built your
drm-next-3.17-rebased-on-fixes branch, my top commit is
commit fa783807977da98da35590fd1d5efdfd4f33fd59
Author: Christian König <christian.koenig at amd.com>
Date:   Mon Jul 28 13:30:12 2014 +0200

    drm/radeon: allow userptr write access under certain conditions

    It needs to be anonymous memory (no file mappings)
    and we are requried to install an MMU notifier.

    Signed-off-by: Christian König <christian.koenig at amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher at amd.com>

I even went through several reboots, switching between "with radeon.dpm=1" and
without. All showed the same result. Let me know, if there is something else, I
can do to assist in debugging this.

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