Re: [PATCH]sched: Isochronous class v2 for unprivileged soft rtscheduling

[Jack O'Quin]

Peter Chubb <peterc@xxxxxxxxxxxxxxxxxx> writes:

>>>>>> "Jack" == Jack O'Quin <joq@xxxxxx> writes:
>
> Jack> Looks like we need to do another study to determine which
> Jack> filesystem works best for multi-track audio recording and
> Jack> playback.  XFS looks promising, but only if they get the latency
> Jack> right.  Any experience with that?  
>
> The nice thing about audio/video and XFS is that if you know ahead of
> time the max size of a file (and you usually do -- because you know
> ahead of time how long a take is going to be) you can precreadte the
> file as a contiguous chunk, then just fill it in, for minimum disc
> latency.

I am not talking about disk latency.  The problem Con uncovered in
ReiserFS was CPU hogging.  Every 20 seconds there was a 6msec latency
glitch in system response.
-- 
  joq
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