From: William Lee Irwin III <wli@holomorphy.com>
To: Rik van Riel <riel@redhat.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Christoph Lameter <clameter@sgi.com>
Subject: Re: [PATCH] free swap space when (re)activating page
Date: Tue, 20 Feb 2007 11:00:05 -0800 [thread overview]
Message-ID: <20070220190005.GQ21484@holomorphy.com> (raw)
In-Reply-To: <45D63445.5070005@redhat.com>
On Fri, Feb 16, 2007 at 05:46:29PM -0500, Rik van Riel wrote:
> The attached patch does what I described in the other thread, it
> makes the pageout code free swap space when swap is getting full,
> by taking away the swap space from pages that get moved onto or
> back onto the active list.
> In some tests on a system with 2GB RAM and 1GB swap, it kept the
> free swap at 500MB for a 2.3GB qsbench, while without the patch
> over 950MB of swap was in use all of the time.
> This should give kswapd more flexibility in what to swap out.
> What do you think?
> Signed-off-by: Rik van Riel <riel@redhat.com>
I would call this a bugfix, not an optimization.
-- wli
WARNING: multiple messages have this Message-ID (diff)
From: William Lee Irwin III <wli@holomorphy.com>
To: Rik van Riel <riel@redhat.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Christoph Lameter <clameter@sgi.com>
Subject: Re: [PATCH] free swap space when (re)activating page
Date: Tue, 20 Feb 2007 11:00:05 -0800 [thread overview]
Message-ID: <20070220190005.GQ21484@holomorphy.com> (raw)
In-Reply-To: <45D63445.5070005@redhat.com>
On Fri, Feb 16, 2007 at 05:46:29PM -0500, Rik van Riel wrote:
> The attached patch does what I described in the other thread, it
> makes the pageout code free swap space when swap is getting full,
> by taking away the swap space from pages that get moved onto or
> back onto the active list.
> In some tests on a system with 2GB RAM and 1GB swap, it kept the
> free swap at 500MB for a 2.3GB qsbench, while without the patch
> over 950MB of swap was in use all of the time.
> This should give kswapd more flexibility in what to swap out.
> What do you think?
> Signed-off-by: Rik van Riel <riel@redhat.com>
I would call this a bugfix, not an optimization.
-- wli
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next prev parent reply other threads:[~2007-02-20 19:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-16 22:46 [PATCH] free swap space when (re)activating page Rik van Riel
2007-02-20 4:53 ` Christoph Lameter
2007-02-20 4:53 ` Christoph Lameter
2007-02-20 13:28 ` Rik van Riel
2007-02-20 13:28 ` Rik van Riel
2007-02-20 16:37 ` Christoph Lameter
2007-02-20 16:37 ` Christoph Lameter
2007-02-20 16:46 ` Rik van Riel
2007-02-20 16:46 ` Rik van Riel
2007-02-20 18:20 ` Christoph Lameter
2007-02-20 18:20 ` Christoph Lameter
2007-02-20 19:31 ` Rik van Riel
2007-02-20 19:31 ` Rik van Riel
2007-02-20 19:42 ` Christoph Lameter
2007-02-20 19:42 ` Christoph Lameter
2007-02-20 19:54 ` Rik van Riel
2007-02-20 20:26 ` Christoph Lameter
2007-02-20 20:26 ` Christoph Lameter
2007-02-20 20:57 ` Christoph Lameter
2007-02-20 20:57 ` Christoph Lameter
2007-02-20 19:00 ` William Lee Irwin III [this message]
2007-02-20 19:00 ` William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2007-02-21 15:09 Al Boldi
[not found] <7Pk3X-bD-17@gated-at.bofh.it>
[not found] ` <7QvgM-3aK-3@gated-at.bofh.it>
[not found] ` <7QDeB-7KY-11@gated-at.bofh.it>
[not found] ` <7QGc7-3ZB-13@gated-at.bofh.it>
[not found] ` <7QGlP-4e1-11@gated-at.bofh.it>
[not found] ` <7QHUO-6RS-5@gated-at.bofh.it>
[not found] ` <7QJ9Y-mo-1@gated-at.bofh.it>
[not found] ` <7QJk7-zW-51@gated-at.bofh.it>
2007-02-23 1:44 ` Bodo Eggert
2007-02-23 1:44 ` Bodo Eggert
2007-02-23 3:34 ` Rik van Riel
2007-02-23 3:34 ` Rik van Riel
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