linux-kernel - Re: [PATCH] free swap space when (re)activating page

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

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

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