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From: Al Boldi <a1426z@gawab.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] free swap space when (re)activating page
Date: Wed, 21 Feb 2007 18:09:45 +0300	[thread overview]
Message-ID: <200702211809.45705.a1426z@gawab.com> (raw)

Rik van Riel wrote:
> Rik van Riel wrote:
> > ... because I think this is what my patch does :)
>
> Never mind, I see it now.
>
> The attached patch should be correct.

Your patch seems to improve the situation a little bit, but the numbers still 
look weird, especially for swap-in, which gets progressively slower.

RAM 512mb , SWAP 1G
#mount -t tmpfs -o size=1G none /dev/shm
#time cat /dev/full > /dev/shm/x.dmp
15sec
#time cat /dev/shm/x.dmp > /dev/null
58sec
#time cat /dev/shm/x.dmp > /dev/null
72sec
#time cat /dev/shm/x.dmp > /dev/null
85sec
#time cat /dev/shm/x.dmp > /dev/null
93sec
#time cat /dev/shm/x.dmp > /dev/null
99sec


Thanks!

--
Al


             reply	other threads:[~2007-02-21 15:08 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-21 15:09 Al Boldi [this message]
     [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  3:34                 ` Rik van Riel
  -- strict thread matches above, loose matches on Subject: below --
2007-02-16 22:46 Rik van Riel
2007-02-20  4:53 ` Christoph Lameter
2007-02-20 13:28   ` Rik van Riel
2007-02-20 16:37     ` Christoph Lameter
2007-02-20 16:46       ` Rik van Riel
2007-02-20 18:20         ` Christoph Lameter
2007-02-20 19:31           ` Rik van Riel
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 20:57               ` Christoph Lameter
2007-02-20 19:00 ` William Lee Irwin III

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