Re: [PATCH] Staircase scheduler v7.4

Oswald Buddenhagen
2004-06-28T15:03:47Z

On Mon, Jun 28, 2004 at 10:11:22PM +1000, Con Kolivas wrote:
> The design of staircase would make renicing normal interactive things
> -ve values bad for the latency of other nice 0 tasks s is not
> recommended for X or games etc. Initial scheduling latency is very
> dependent on nice value in staircase. If you set a cpu hog to nice -5
> it will hurt audio at nice 0 and so on.
>
i think using nice for both cpu share and latency is broken by design ...
a typical use case on my system: for real-time tv recording i need
mencoder to get some 80% of the cpu time on average. that means i have
to nice -<something "big"> it to prevent compiles, flash plugins running
amok, etc. from making mencoder explode (i.e., overrun buffers). but that
entirely destroys interactivity; in fact the desktop becomes basically
unusable.

greetings

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