From: Stroller <stroller@stellar.eclipse.co.uk>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: Howto share Linux swap partition with Windows XP
Date: Sat, 24 Jan 2009 21:39:23 +0000 [thread overview]
Message-ID: <33CFF852-BD50-43C1-8F8C-C23489910881@stellar.eclipse.co.uk> (raw)
In-Reply-To: <glfiok$t30$1@ger.gmane.org>
On 24 Jan 2009, at 17:22, Grant Edwards wrote:
> I still can't believe that Windows does it's swapping using a
> normal filesystem -- and by default it's the same filesystem
> used for system and application files. It seems like the
> filesystem code would end up being a serious bottleneck.
> 3. Does creating the swapfile on a journaled filesystem (e.g.
> ext3 or reiser) incur a significant performance hit?
None at all. The kernel generates a map of swap offset -> disk
blocks at swapon time and from then on uses that map to perform
swap I/O directly against the underlying disk queue, bypassing all
caching, metadata and filesystem code.
http://lkml.org/lkml/2005/7/7/326
Stroller.
next prev parent reply other threads:[~2009-01-24 21:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-23 5:16 [gentoo-user] Howto share Linux swap partition with Windows XP Grant Edwards
2009-01-23 12:44 ` Stroller
2009-01-23 14:58 ` [gentoo-user] " Grant Edwards
2009-01-23 16:08 ` Stroller
2009-01-23 17:02 ` Grant Edwards
2009-01-23 17:09 ` Paul Hartman
2009-01-23 20:53 ` Stroller
2009-01-23 21:10 ` Paul Hartman
2009-01-24 14:20 ` Stroller
2009-01-23 21:11 ` Grant Edwards
2009-01-24 10:44 ` Peter Humphrey
2009-01-24 15:35 ` Grant Edwards
2009-01-24 15:52 ` Peter Humphrey
2009-01-24 17:22 ` Grant Edwards
2009-01-24 19:02 ` ABCD
2009-01-24 20:42 ` Grant Edwards
2009-01-24 21:39 ` Stroller [this message]
2009-01-24 23:04 ` Grant Edwards
2009-01-25 2:48 ` ABCD
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