linux-kernel - Re: AMD graphics performance regression in 4.15 and later

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Message-ID: <CAEJqkgg8Sk54LEA7eokG1u=Npr-cn-7cCgqnhE9xXoktvhwMcw@mail.gmail.com>
Date:   Wed, 11 Apr 2018 19:21:20 +0200
From:   Gabriel C <nix.or.die@...il.com>
To:     Christian König <christian.koenig@....com>
Cc:     Jean-Marc Valin <jmvalin@...illa.com>,
        Dave Airlie <airlied@...ux.ie>, alexander.deucher@....com,
        Felix Kuehling <Felix.Kuehling@....com>,
        Laura Abbott <labbott@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        michel.daenzer@....com, dri-devel@...ts.freedesktop.org,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: AMD graphics performance regression in 4.15 and later

2018-04-11 16:26 GMT+02:00 Gabriel C <nix.or.die@...il.com>:
> 2018-04-11 11:37 GMT+02:00 Christian König <christian.koenig@....com>:
>> Am 11.04.2018 um 06:00 schrieb Gabriel C:

...
>>
>> Please test Alex's amd-staging-drm-next branch from
>> git://people.freedesktop.org/~agd5f/linux.
>
> I'm on it just the connection to freedesktop.org is slow as hell.
> Will take a while to get that branch with 62KiB/s :)
>

Testing done on that branch on commit 24110c70630998dc83da23cae910a9538f54ef64.

On default Plasma OpenGL 2.0 profiles things are still laggy but a lot better.
On OpenGL 3.1 things are working much better just minor gliches on
maximzing/minimizing windows.

Firefox is still broken , frames drops , video stops etc
Cromium-browser works fine
Otter-browser does not work at all
Qupzilla/Falkon has Firefox like issues too

Things I noticed while testing Firefox or Qupzilla..
Once these start acting up it does affect the whole Desktop,
for some secons scrolling lags , mouse is slow , etc.
Once these are closed the Desktop start working again after few seconds.

Do you want me to test any mesa/xorg-server/drivers git/branches too ?

If so just let me know.

Regards