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From: James A Sutherland <jas88@cam.ac.uk>
To: "G . Sumner Hayes" <sumner-kernel-nospam@forceovermass.com>,
        =?iso-8859-15?q?Fran=E7ois=20Cami?= <stilgar2k@wanadoo.fr>
Subject: Re: Swap vs No Swap.
Date: Thu, 22 Nov 2001 20:37:20 +0000
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Cc: Rik van Riel <riel@conectiva.com.br>, linux-kernel@vger.kernel.org
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On Thursday 22 November 2001 7:36 pm, G . Sumner Hayes wrote:
> On Thu, Nov 22, 2001 at 08:17:43PM +0100, Fran?ois Cami wrote:
> > James A Sutherland wrote:
> > > Hmm... if you've experimented with this, how does this setup compare
> > > to a striped RAID of hda+hdc used for root and swap? (i.e. is the
> > > speedup down to splitting accesses between two spindles?)
> >
> > I haven't, but it's a good idea, I may give it a try, but not very soon.
>
> You shouldn't need striping for this--if you have two swap partitions
> with equal priority, the kernel will "stripe" them itself.
>
> At least that's my understanding.

It'll stripe the SWAP area, but not the root FS; what I'm interested in is 
how performance is affected by splitting both across two devices, compared to 
putting one on each.


James.
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