From: Pavel Machek <pavel@suse.cz>
To: Kurt Garloff <garloff@suse.de>,
Linux kernel list <linux-kernel@vger.kernel.org>
Subject: Re: dynamic sched timeslices
Date: Tue, 23 Mar 2004 10:23:40 +0100 [thread overview]
Message-ID: <20040323092340.GD1505@openzaurus.ucw.cz> (raw)
In-Reply-To: <20040315224201.GX4452@tpkurt.garloff.de>
Hi!
> attached patch allows userspace to tune the scheduling timeslices.
> It can be used for a couple of things:
> * Tune a workload for batch processing:
> You'd probably wnat to use long timeslices in order to not reschedule
> as often to make good use of your CPU caches
> * Tune a workload for interactive use:
> Under load, you may want to reduce the scedulilng latencies by using
> shorter timeslices (and there are situations where the interactiviy
> tweak -- even if they were perfect -- can't save you).
> * Tune the ration betweeen maximum and minimum timeslices to make
> nice much nicer e.g.
If you make ration much bigger, you are going to see
priority inversion issues. Some kind of "boost priority when in
kernel" would be needed...
--
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prev parent reply other threads:[~2004-03-25 14:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-15 22:42 dynamic sched timeslices Kurt Garloff
2004-03-15 22:59 ` Christoph Hellwig
2004-03-15 23:09 ` Kurt Garloff
2004-03-15 23:40 ` Andrew Morton
2004-03-16 11:36 ` Kurt Garloff
2004-03-16 13:13 ` Con Kolivas
2004-03-16 14:29 ` Kurt Garloff
2004-03-16 20:45 ` Con Kolivas
2004-03-18 0:20 ` Kurt Garloff
2004-03-18 0:32 ` Andrew Morton
2004-03-18 3:38 ` Con Kolivas
2004-03-16 15:03 ` Timothy Miller
2004-03-16 15:08 ` Kurt Garloff
2004-03-23 9:23 ` Pavel Machek [this message]
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