Re: [RFC] Scheduler queue implementation ...

Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 10 Dec 2001 01:18:16 +0000 (GMT)


> > of non cpu hog processes running. A lot of messaging systems have high task
> > switch rates but very few cpu hogs. So you still need to handle the non hogs
> > carefully to avoid degenerating back into Linus scheduler.
>
> In my experience, if you've I/O bound tasks that lead to a long run queue,
> that means that you're suffering major kernel latency problems ( other than the
> scheduler ).

I don't see any evidence of it in the profiles. Its just that a lot of stuff
gets passed around between multiple daemons. You can see similar things
in something as mundane as a 4 task long pipe, a user mode file system or
some X11 clients.
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