With the latest git mesa, there are major performance drops. First noticed the issue with the 32bit steam game "Move or die", but it seems to affect the whole system. It basically makes the game unplayable.
Bisecting pointed me to the following commit:
Author: Leo Liu <firstname.lastname@example.org>
Date: Wed May 3 14:06:35 2017 -0400
amd/common: add vcn dec ip info query
Signed-off-by: Leo Liu <email@example.com>
Reviewed-by: Christian König <firstname.lastname@example.org>
I tried reverting it, but it doesn't apply cleanly.
Running Arch Linux 64
System the issue was tested on:
- Arch Linux 64bit
- Linux 4.11.2, AMDGPU driver
- Radeon R9 285
Just noticed, this seems to be reverted already during the time I need to setup and bisect mesa.
David reverted it and Leo Liu sent an update just in time:
Please try with this one:
Dicussion was here:
(In reply to Fabian Maurer from comment #0)
> With the latest git mesa, [...]
Can't be the latest, since the commit you've identified is already reverted: <https://cgit.freedesktop.org/mesa/mesa/commit/?id=e1409f730251bf9d7e70046f58392de6e4e98815>. I find it helpful giving exact commit IDs of the builds I'm using (or the version number, whatever is more accurate). Otherwise bug reports don't tend to age well. ;-)
In any case, if you're bisection is correct, you should check a build of current HEAD (e1409f730251bf9d7e70046f58392de6e4e98815) and close this bug if appropriate. Otherwise a new biscetion would be required.
(In reply to Dieter Nützel from comment #2)
> Hi Fabian,
> David reverted it and Leo Liu sent an update just in time:
> Please try with this one:
> Dicussion was here:
When you've tested it fine, you can send four (first) 'Tested-by:' ;-)
Thanks, just tested, it works fine after the commit was reverted. Marking this as resolved.
I can reproduce the problem with kernel that has no vcn patch, and the fix sent to mesa-dev list was tested and have issue fixed.