fc2, xorg, 2.6.x, scheduling latency peaks

[Arjan van de Ven]

> a) 2.6.6-1.391 with preempt on:
> http://ccrma.stanford.edu/~nando/latencytest/20040601/2.6.6-1.391.1.ll.rhfc2.ccrma/

85.8% is in the 1ms range
> 
> b) 2.6.6-1.391 with preempt off:
> http://ccrma.stanford.edu/~nando/latencytest/20040601/2.6.6-1.391.2.ll.rhfc2.ccrma/

87.9% is in the 1ms range

so somewhat better

> 
> c) 2.6.6-1.391 with preempt off and bad radeon latency patch (see
> comments below):
> http://ccrma.stanford.edu/~nando/latencytest/20040601/2.6.6-1.391.3.ll.rhfc2.ccrma/
> 

ohhh interesting

I will be looking at the patch and see if I can fix it up.. the results
look spiffy.
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