Originally Posted by PilotJLR
I had experienced the exact same issue as the OP... passing "nopat" to the kernel has resolved this problem!
Although I haven't used glxgears, disregarding the OP's direct comparison is asinine. I have used a variety of applications (X-Plane is one) that performed better under Ubuntu 8.X than in Fedora 9/10. Nopat is clearly the reason... adding nopat as a kernel argument has fixed the jitter and poor framerate I previously experienced.
Thank you for those who recommended this fix!
You don't need to use nopat with the 2.6.29 kernels from Koji
, IMO 2.6.29 is much more stable than 2.6.28 or 2.6.27.