From: "J . A . Magallon" <jamagallon@able.es>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Mike Galbraith <mikeg@wen-online.de>,
linux-kernel <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@transmeta.com>,
MOLNAR Ingo <mingo@chiara.elte.hu>
Subject: Re: [PATCH] eliminate a truckload of context switches
Date: Sun, 13 May 2001 21:59:20 +0200 [thread overview]
Message-ID: <20010513215920.A1437@werewolf.able.es> (raw)
In-Reply-To: <Pine.LNX.4.33.0105081355290.363-100000@mikeg.weiden.de> <Pine.LNX.4.21.0105131320380.5468-100000@imladris.rielhome.conectiva>
In-Reply-To: <Pine.LNX.4.21.0105131320380.5468-100000@imladris.rielhome.conectiva>; from riel@conectiva.com.br on Sun, May 13, 2001 at 18:21:46 +0200
On 05.13 Rik van Riel wrote:
> On Tue, 8 May 2001, Mike Galbraith wrote:
>
> > While running a ktrace enabled kernel (IKD), I noticed many useless
> > context switches. The problem is that we continually pester kswapd/
> > kflushd at times when they can't do anything other than go back to
> > sleep. As you'll see below, we do this quite a bit under heavy load.
>
> I agree, both with your analysis that the context switches
> aren't needed and with the patch you sent to fix it.
>
> Linus, if it isn't in the kernel yet, please put it in...
>
If it matters, I have been running it on 2.4.4-ac8 and works fine...
--
J.A. Magallon # Let the source be with you...
mailto:jamagallon@able.es
Linux Mandrake release 8.1 (Cooker) for i586
Linux werewolf 2.4.4-ac8 #1 SMP Sat May 12 01:16:37 CEST 2001 i686
prev parent reply other threads:[~2001-05-13 19:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-08 12:32 [PATCH] eliminate a truckload of context switches Mike Galbraith
2001-05-13 16:21 ` Rik van Riel
2001-05-13 19:59 ` J . A . Magallon [this message]
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