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From: Artur Skawina <art_k@o2.pl>
To: Con Kolivas <kernel@kolivas.org>
Cc: Jeffrey Hundstad <jeffrey.hundstad@mnsu.edu>,
linux list <linux-kernel@vger.kernel.org>,
ck list <ck@vds.kolivas.org>, Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] sched: rsdl check for niced tasks lowering prio level
Date: Thu, 22 Mar 2007 14:34:55 +0100 [thread overview]
Message-ID: <460285FF.40408@o2.pl> (raw)
In-Reply-To: <200703221304.58011.kernel@kolivas.org>
Con Kolivas wrote:
> Here is the best fix for the bug pointed out. Thanks.
> Ensure niced tasks are not inappropriately limiting sleeping unniced tasks
> by explicitly checking what the best static priority that has run this
> major rotation was.
yes, this made the machine usable again.
After noticing that the context switch rate during a "nice -19 make
-j2" has now been halved vs stock 2.6.20, compiled a kernel under
both and RSDL w/these two patches was 2% faster; so this may be the
right direction after all :)
artur
next prev parent reply other threads:[~2007-03-22 13:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-21 17:29 [PATCH] sched: rsdl improvements Con Kolivas
2007-03-21 23:27 ` Artur Skawina
2007-03-21 23:48 ` Jeffrey Hundstad
2007-03-22 0:15 ` Artur Skawina
2007-03-22 0:24 ` Con Kolivas
2007-03-22 0:52 ` Con Kolivas
2007-03-22 2:04 ` [PATCH] sched: rsdl check for niced tasks lowering prio level Con Kolivas
2007-03-22 13:34 ` Artur Skawina [this message]
2007-03-21 23:36 ` [PATCH] sched: rsdl improvements Andrew Morton
2007-03-22 5:03 ` Con Kolivas
2007-03-22 14:46 ` Christian
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