linux-kernel - Re: speeding up swapoff

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Message-Id: <1188483297.1131.377.camel@frg-rhel40-em64t-04>
Date:	Thu, 30 Aug 2007 16:14:57 +0200
From:	Xavier Bestel <xavier.bestel@...e.fr>
To:	Helge Hafting <helge.hafting@...el.hist.no>
Cc:	Robert Hancock <hancockr@...w.ca>,
	Daniel Drake <ddrake@...ntes3d.com>,
	Arjan van de Ven <arjan@...radead.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: speeding up swapoff

On Thu, 2007-08-30 at 16:06 +0200, Helge Hafting wrote:
> Xavier Bestel wrote:
> > On Thu, 2007-08-30 at 15:55 +0200, Helge Hafting wrote:
> >   
> >> If the swap device is full, then there is no need for random
> >> seeks as the swap pages can be read in disk order.
> >>     
> >
> > If the swap file is full, you probably have a machine dead into a swap
> > storm.
> Only if you have enough swap. :-)

Yeah, sure. But these days disk space is cheap and I tend to put too big
swap partitions, and I always regret it later ...

	Xav


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