Regression introduced in drm/i915 kernel modules for 965GM system

[Richard Goedeken]

Jesse,

Thanks for the info.  I looked through the dri-devel archive and found the 
patch.  I patched my source, re-installed the kernel modules, then rebooted.

I ran my emulator and glxgears quite a few times and everything worked ok.  I 
thought the problem was fixed, because with the unpatched code the system would 
slow down after running an opengl program only once or twice.  So I decided to 
test for the memory leak, and I found that it is still present.  I opened the 
system monitor and started glxgears.  Over about 5 minutes the memory usage of 
the glxgears process steadily creeped up to about 1GB before I killed it.

The last minute or so that glxgears was running, it started getting jerky and 
the frame rate dropped to <100fps.  I thought maybe it was swapping to disk due 
to the memory leak, but the disk light wasn't on.  After I killed the process I 
found that the system was extremely slow again, just like with the IRQ bug.  So 
it appears that Keith's patch doesn't totally fix the problem.

Richard


Jesse Barnes wrote:
> 
> Yeah, Keith noticed something similar.  The vblank rework has exposed 
> some latent interrupt handling bugs.  He posted a patch to dri-devel 
> that might work for you; it worked on his 965GM at least.  We should be 
> pushing the fixes upstream soon...
> 
> Thanks,
> Jesse