http://bugs.freedesktop.org/show_bug.cgi?id=21385
Summary: Mesa master performance regresssion GM965
Product: DRI
Version: XOrg CVS
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: General
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=25107)
--> (http://bugs.freedesktop.org/attachment.cgi?id=25107)
Sysprofile with mesa-master and mesa-7.4 glxgears performance.
To begin with I am using Debian (sid) and my X stack is
libdrm2 2.4.9-1
xserver-xorg-video-intel 2:2.7.0-1
xserver-xorg-core 2:1.6.1-1
libgl1-mesa-dri 7.4-2
libgl1-mesa-glx 7.4-2
libglu1-mesa 7.4-2
libosmesa6 7.4-2
In all cases CPU is set to performance governor
# cpufreq-set -g performance
My hardware is
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
Integrated Graphics Controller (rev 0c)
and I use AccelMethod "UXA"
I used to get 40-50fps with RegnumOnline game at some point when I was using
mesa from master before 7.4 release.
After 7.4 release a bug was introduced that textures are not rendered correctly
so I was forced to use master again.
Performance dropped to 20fps and then again after some commits to 8-15fps which
is not playable.
There are two regressions that overlaps so git-bisect with lots of luck might
find last one, not the one that happened after 7.4 release.
I am attaching sysprof results profiling both versions of mesa along with
comparison of medians from 10 fps samples.
With master glxgears for 10 samples
x <- c(800.376, 848.689, 810.539, 797.115, 811.153, 810.357, 810.774, 809.774,
811.079, 809.032)
> median(x)
[1] 810.448
With 7.4 glxgears for 10 samples
x <- c(1008.398, 1006.403, 1006.601, 1006.267, 1006.721, 1006.811, 1005.906,
1008.047, 1008.378, 1006.707)
> median(x)
[1] 1006.714
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