Ken Mays wrote:
> OS2008.05-b86 gives these results on a Intel 2.5Ghz Pentium4/ Intel
> 82845G IGP/Intel (i810) 2.1.1 driver config using glxgears:
>
> 1. 286 FPS (glxgears - open window, 1280x768x75 resolution)
> 2. 2539 FPS (glxgears - minimized window, 1280x768x75 resolution)
>
> A Linux distro gives these results on a Intel 2.5Ghz Pentium4/ Intel
> 82845G IGP/Intel 2.3.1 driver config using glxgears:
>
> 1. 467 FPS (glxgears - open window, 1280x768x75 resolution)
> 2. 3046 FPS (glxgears - minimized window, 1280x768x75 resolution)
>
> Now, I see the issue. At first, the test from OSOL2008.11-b96 -> b98
> didn't reveal a big FPS difference but I did see 15 FPS difference.
> OSOL2008.05-b86 reveals there is a 40 FPS difference. So, something
> is amiss, but I was pretty curious if it was specifically the Intel
> driver or XServer 1.3.0/Mesa.
>
> I loaded up a Linux distro which revealed their build of the Intel
> 2.3.1 video driver using glxgears gives 467 FPS versus 286 FPS for
> the related Intel 2.3.0 driver version implemented on OSOL2008.11-b93
> - while even giving better FPS scores than the Intel 2.4.0 driver
> implemenented in OSOL2008.11-b98?!? What??
>
> Also, I had Compiz off for all OSOL tests but *ON* for the Linux
> test. OSOL2008.11-b98 started to display issues with terminal launch
> once I activated the Compiz-extra option.
>
> Conclusion: We have a big bug here affecting the Intel video driver
> performance.
>
> ~ Ken Mays
Thanks for your comparetion. Could you please provide more
detaile info about the Linux distro, especially the mesa version?
Also could you please do more test on b99, since there is an
upgrade fro mesa?
Thanks!
Liang Kan
