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SubjectRe: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24
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On Fri, 2005-07-01 at 18:46 -0700, William Weston wrote:
> FWIW, I'm still seeing the SMT scheduling? meltdown issues with
> -50-42.
> Running two instances of 'dd if=/dev/zero of=/dev/null bs=65536'
> instead
> of 'burnP6' results in the same behavior. Here's a quick recap:
>
> - Start (or login to ) X.
> - Start an X app that constantly updates the screen, like wmcube, or
> vlc.

Which video driver is X using? What nice value is the X server running
at?

Does adding:

Option "NoAccel"

to the Device section of your X config file make any difference?

(on most systems X is the only thing besides the kernel that can access
hardware directly, which can cause problems)

Lee

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