From: "Stephen C. Tweedie" <sct@dcs.ed.ac.uk>
To: Rik van Riel <H.H.vanRiel@phys.uu.nl>
Cc: "Stephen C. Tweedie" <sct@redhat.com>, Linux MM <linux-mm@kvack.org>
Subject: Re: Thread implementations...
Date: Fri, 3 Jul 1998 21:05:27 +0100 [thread overview]
Message-ID: <199807032005.VAA02773@dax.dcs.ed.ac.uk> (raw)
In-Reply-To: <Pine.LNX.3.96.980703171908.20629B-100000@mirkwood.dummy.home>
Hi,
On Fri, 3 Jul 1998 17:21:51 +0200 (CEST), Rik van Riel
<H.H.vanRiel@phys.uu.nl> said:
> On Wed, 1 Jul 1998, Stephen C. Tweedie wrote:
>> sequential clusters, but if we have things like Ingo's random swap
>> stats-based prediction logic, then we can use exactly the same extent
>> concept there too.
> Hmm, it appears this was the legendary swap readahead code I
> was looking for a while ago :)
> But, ehhh, just what _is_ this random swap stats-based prediction
> algorithm,
It's a per-swap-page readahead predictor which observes the access
patterns for vmas.
> and how far from implementation is it?
It is implemented. It is not in the main kernels, nor does it take
advantage of the potential for swap readahead in the 2.1.86+ kernels.
--Stephen
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next prev parent reply other threads:[~1998-07-03 20:06 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-06-30 19:30 Larry McVoy
1998-07-01 8:50 ` Stephen C. Tweedie
1998-07-03 15:21 ` Rik van Riel
1998-07-03 20:05 ` Stephen C. Tweedie [this message]
1998-07-03 20:36 ` Rik van Riel
1998-07-04 16:37 ` Stephen C. Tweedie
[not found] <199806240915.TAA09504@vindaloo.atnf.CSIRO.AU>
[not found] ` <Pine.LNX.3.96dg4.980624025515.26983E-100000@twinlark.arctic.org>
[not found] ` <199806241213.WAA10661@vindaloo.atnf.CSIRO.AU>
1998-06-24 22:00 ` Eric W. Biederman
1998-06-24 23:41 ` Richard Gooch
1998-06-25 4:45 ` Eric W. Biederman
1998-06-25 17:14 ` Todd Larason
1998-06-26 7:53 ` Christoph Rohland
1998-06-26 14:16 ` Eric W. Biederman
1998-06-29 10:19 ` Stephen C. Tweedie
1998-06-30 6:19 ` Eric W. Biederman
1998-06-30 13:10 ` Stephen C. Tweedie
1998-06-30 19:35 ` Dean Gaudet
1998-07-01 9:09 ` Stephen C. Tweedie
1998-06-25 4:12 ` Dean Gaudet
1998-06-25 3:53 ` Richard Gooch
1998-06-25 11:32 ` Stephen C. Tweedie
1998-06-25 21:24 ` Chris Wedgwood
1998-06-25 22:16 ` Richard Gooch
1998-06-25 4:56 ` Eric W. Biederman
1998-06-25 11:35 ` Stephen C. Tweedie
1998-06-25 20:31 ` Dean Gaudet
1998-06-30 6:40 ` Eric W. Biederman
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