From: Jesper Juhl <juhl-lkml@dif.dk>
To: Bill Davidsen <davidsen@tmr.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Limiting program swap
Date: Wed, 08 Dec 2004 21:45:00 +0100 [thread overview]
Message-ID: <41B767CC.8000109@dif.dk> (raw)
In-Reply-To: <cp7iqj$57n$1@gatekeeper.tmr.com>
Bill Davidsen wrote:
> I have several machine of various memory sizes which suffer from really
> poor performance when doing backups. This appears to be because all the
> programs other than the backup quickly get swapped to make room for i/o
> buffers.
>
> Is there some standard portable way to prevent this, either by reserving
> some memory for programs which will not get swapped regardless of i/o
> pressure, or alternatively limiting the total memory used for i/o
> buffers, dcache, and similar things?
>
I'm wondering if turning the /proc/sys/vm/swappiness knob would help,
but I'll honestly admit that I don't know.
--
Jesper Juhl
next prev parent reply other threads:[~2004-12-08 20:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 19:07 Limiting program swap Bill Davidsen
2004-12-08 19:14 ` Marc-Christian Petersen
2004-12-08 19:35 ` William Lee Irwin III
2004-12-08 20:45 ` Jesper Juhl [this message]
2004-12-08 23:12 ` Con Kolivas
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