From: "Barry K. Nathan" <barryn@pobox.com>
To: Tim Schmielau <tim@physik3.uni-rostock.de>
Cc: Andrew Morton <akpm@osdl.org>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: swapspace layout improvements advocacy
Date: Fri, 14 Jan 2005 14:52:13 -0800 [thread overview]
Message-ID: <20050114225213.GA4841@ip68-4-98-123.oc.oc.cox.net> (raw)
In-Reply-To: <Pine.LNX.4.53.0501141433000.7044@gockel.physik3.uni-rostock.de>
On Fri, Jan 14, 2005 at 02:55:27PM +0100, Tim Schmielau wrote:
> 2.6 seems in due need of such a patch.
>
> I recently found out that 2.6 kernels degrade horribly when going into
> swap. On my dual PIII-850 with as little as 256 mb ram, I can easily
[snip]
I haven't tried the patch in question (unless it's in any Fedora
kernels), but I've noticed that the single biggest step to improve
swapping performance in 2.6 is to use the CFQ scheduler, not the AS
scheduler. (That's also why Red Hat/Fedora kernels use CFQ as the
default scheduler.)
-Barry K. Nathan <barryn@pobox.com>
next prev parent reply other threads:[~2005-01-14 22:53 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-05 0:32 page migration patchset Ray Bryant
2005-01-05 2:07 ` Andi Kleen
2005-01-05 3:20 ` Ray Bryant
2005-01-05 18:41 ` Steve Longerbeam
2005-01-05 19:23 ` Ray Bryant
2005-01-05 23:00 ` Steve Longerbeam
2005-01-05 23:16 ` Ray Bryant
2005-01-05 20:55 ` Hugh Dickins
[not found] ` <41DC7EAD.8010407@mvista.com>
2005-01-06 14:43 ` Andi Kleen
2005-01-06 16:00 ` Ray Bryant
2005-01-06 17:50 ` Christoph Lameter
2005-01-06 19:29 ` Andi Kleen
2005-01-06 22:30 ` William Lee Irwin III
2005-01-06 23:08 ` Andrew Morton
2005-01-06 23:15 ` William Lee Irwin III
2005-01-06 23:21 ` Ray Bryant
2005-01-06 23:35 ` William Lee Irwin III
2005-01-06 23:53 ` Anton Blanchard
2005-01-07 0:06 ` William Lee Irwin III
2005-01-07 0:31 ` Andi Kleen
2005-01-06 23:43 ` Steve Longerbeam
2005-01-06 23:58 ` William Lee Irwin III
2005-01-11 15:38 ` Ray Bryant
2005-01-11 19:00 ` Steve Longerbeam
2005-01-11 19:30 ` Ray Bryant
2005-01-11 20:59 ` Steve Longerbeam
2005-01-12 12:35 ` Robin Holt
2005-01-12 18:12 ` Hugh Dickins
2005-01-12 18:45 ` Ray Bryant
2005-01-12 18:53 ` Andrew Morton
2005-01-14 13:55 ` swapspace layout improvements advocacy Tim Schmielau
2005-01-14 18:15 ` Andrew Morton
2005-01-14 22:52 ` Barry K. Nathan [this message]
2005-01-15 0:33 ` Alan Cox
2005-01-15 2:26 ` Tim Schmielau
2005-01-15 8:55 ` Pasi Savolainen
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