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SubjectRe: iosched: impact of streaming read on read-many-files
Hi!

> > mplayer or xmms will never skip frames, not for parallel cp reading
> > floods of data at max speed like a database with zillon of threads. For
> > multimedia not to skip frames 1M/sec is more than enough bandwidth,
> > doesn't matter if the huge database in background runs much slower as
> > far as you never skip a frame.
>
> These applications are broken. The kernel shouldn't be bending over
> backwards trying to fix them up. Because this will never ever work as well
> as fixing the applications.
>
> The correct way to design such an application is to use an RT thread to
> perform the display/audio device I/O and a non-RT thread to perform the disk

I do not think this can be done easily.
For mplayer case you'd need to mlock
X server...

And emacs/vi/all interactive tasks
are in similar situation (latency matters),
are you going to make them all realtime?

--
Pavel
Written on sharp zaurus, because my Velo1 broke. If you have Velo you don't need...

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