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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U8
On Wed, 20 Oct 2004, Adam Heath wrote:

> On Wed, 20 Oct 2004, Ingo Molnar wrote:
>
> >
> > i have released the -U8 Real-Time Preemption patch:
> >
> > http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.9-rc4-mm1-U8
>
> Grr. I got this -U8 mail *before* I got the -U7 mail.
>
> All thruout these U# kernels, I get stalls in X(everything pauses, not sure if
> remote pings stop). Nothing shows in dmesg when this occurs.

Got some input on this.

Heavy disk and/or network i/o seems to cause the pauses. Doing a copy over
nfs(writing to disk), or using scp gives me 1-2 MB/s. If I boot plain rc4, I
get full network speed(10-11 MB/s with nfs, 5-8 MB/s with scp).
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