From: "Ray Lee" <ray-lk@madrabbit.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Con Kolivas <kernel@kolivas.org>, Ingo Molnar <mingo@elte.hu>,
ck list <ck@vds.kolivas.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: swap-prefetch: 2.6.22 -mm merge plans
Date: Thu, 10 May 2007 05:34:16 -0700 [thread overview]
Message-ID: <2c0942db0705100534xd4bc77eq76dd728fedc855b9@mail.gmail.com> (raw)
In-Reply-To: <4642C416.3000205@yahoo.com.au>
On 5/10/07, Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> > Huh? You already stated one version of it above, namely updatedb. But
>
> So a swapping problem with updatedb should be unusual and we'd like to see
> if we can fix it without resorting to prefetching.
>
> I know the theory behind swap prefetching, and I'm not saying it doesn't
> work, so I'll snip the rest of that.
updatedb is only part of the problem. The other part is that the
kernel has an opportunity to preemptively return some of the evicted
working set to RAM before I ask for it. No fancy use-once algorithm is
going to address that, so your solution is provably incomplete for my
problem.
What's so hard to understand about that?
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next prev parent reply other threads:[~2007-05-10 12:34 UTC|newest]
Thread overview: 180+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-30 23:20 Andrew Morton
2007-04-30 23:59 ` Bill Irwin
2007-05-01 0:09 ` nfsd/md patches " Neil Brown
2007-05-01 9:08 ` Christoph Hellwig
2007-05-01 9:15 ` Andrew Morton
2007-05-01 9:21 ` Christoph Hellwig
2007-05-01 9:52 ` Neil Brown
2007-05-01 10:15 ` Christoph Hellwig
2007-05-01 14:34 ` Trond Myklebust
2007-05-01 0:54 ` MADV_FREE functionality Rik van Riel
2007-05-01 1:18 ` Andrew Morton
2007-05-01 1:23 ` Rik van Riel
2007-05-01 7:13 ` Jakub Jelinek
2007-05-01 1:23 ` Ulrich Drepper
2007-05-01 1:39 ` 2.6.22 -mm merge plans Stefan Richter
2007-05-01 2:30 ` 2.6.22 -mm merge plans (RE: input) Dmitry Torokhov
2007-05-01 8:11 ` 2.6.22 -mm merge plans -- pfn_valid_within Andy Whitcroft
2007-05-01 8:19 ` Andrew Morton
2007-05-01 8:44 ` 2.6.22 -mm merge plans -- vm bugfixes Nick Piggin
2007-05-01 8:54 ` Andrew Morton
2007-05-01 19:31 ` Hugh Dickins
2007-05-02 3:08 ` Nick Piggin
2007-05-02 9:15 ` Nick Piggin
2007-05-02 14:00 ` Hugh Dickins
2007-05-03 1:32 ` Nick Piggin
2007-05-03 10:37 ` Christoph Hellwig
2007-05-03 12:56 ` Nick Piggin
2007-05-04 9:23 ` Nick Piggin
2007-05-04 9:43 ` Nick Piggin
2007-05-08 3:03 ` Benjamin Herrenschmidt
2007-05-03 12:24 ` Hugh Dickins
2007-05-03 12:43 ` Nick Piggin
2007-05-03 12:58 ` Hugh Dickins
2007-05-03 13:08 ` Nick Piggin
2007-05-03 16:52 ` Andrew Morton
2007-05-04 4:16 ` Nick Piggin
2007-05-09 12:34 ` Nick Piggin
2007-05-09 14:28 ` Hugh Dickins
2007-05-09 14:45 ` Nick Piggin
2007-05-09 15:38 ` Hugh Dickins
2007-05-09 22:24 ` Nick Piggin
2007-05-01 8:46 ` pcmcia ioctl removal Christoph Hellwig
2007-05-01 8:56 ` Russell King
2007-05-01 8:57 ` Willy Tarreau
2007-05-01 9:08 ` Andrew Morton
2007-05-01 14:46 ` Adrian Bunk
2007-05-01 9:16 ` Robert P. J. Day
2007-05-01 9:44 ` Willy Tarreau
2007-05-01 10:16 ` Robert P. J. Day
2007-05-01 10:26 ` Gabriel C
2007-05-01 10:52 ` Willy Tarreau
2007-05-01 10:12 ` Jan Engelhardt
2007-05-01 11:00 ` Willy Tarreau
2007-05-01 12:06 ` Konstantin Münning
2007-05-01 13:56 ` Rogan Dawes
2007-05-01 19:10 ` Russell King
2007-05-01 20:41 ` Jan Engelhardt
2007-05-09 12:54 ` Pavel Machek
2007-05-09 13:00 ` Robert P. J. Day
2007-05-09 13:03 ` Adrian Bunk
2007-05-09 19:11 ` Romano Giannetti
2007-05-10 12:40 ` Adrian Bunk
2007-05-01 8:48 ` pci hotplug patches Christoph Hellwig
2007-05-02 3:57 ` Greg KH
2007-05-13 20:59 ` Christoph Hellwig
2007-05-14 11:48 ` Greg KH
2007-05-01 8:54 ` cache-pipe-buf-page-address-for-non-highmem-arch.patch Christoph Hellwig
2007-05-01 9:04 ` cache-pipe-buf-page-address-for-non-highmem-arch.patch Andrew Morton
2007-05-01 11:31 ` cache-pipe-buf-page-address-for-non-highmem-arch.patch Andi Kleen
2007-05-03 3:48 ` cache-pipe-buf-page-address-for-non-highmem-arch.patch Ken Chen
2007-05-01 8:55 ` consolidate-generic_writepages-and-mpage_writepages.patch Christoph Hellwig
2007-05-01 9:17 ` 2.6.22 -mm merge plans Pekka Enberg
2007-05-01 9:24 ` Christoph Hellwig
2007-05-01 9:37 ` Peter Zijlstra
2007-05-01 12:19 ` Andi Kleen
2007-05-01 17:12 ` Pekka Enberg
2007-05-01 10:16 ` fragmentation avoidance " Mel Gorman
2007-05-01 13:02 ` 2.6.22 -mm merge plans -- lumpy reclaim Andy Whitcroft
2007-05-01 18:03 ` Peter Zijlstra
2007-05-01 19:00 ` Andrew Morton
2007-05-01 14:54 ` fragmentation avoidance Re: 2.6.22 -mm merge plans Christoph Lameter
2007-05-01 19:00 ` Mel Gorman
2007-05-01 18:57 ` Andrew Morton
2007-05-07 13:07 ` Yasunori Goto
2007-05-01 14:31 ` 2.6.22 -mm merge plans: mm-more-rmap-checking Hugh Dickins
2007-05-02 1:42 ` Nick Piggin
2007-05-02 13:17 ` Hugh Dickins
2007-05-03 0:18 ` Nick Piggin
2007-05-01 16:56 ` 2.6.22 -mm merge plans Zan Lynx
2007-05-01 17:06 ` 2.6.22 -mm merge plans: mm-detach_vmas_to_be_unmapped-fix Hugh Dickins
2007-05-01 18:10 ` 2.6.22 -mm merge plans: slub Hugh Dickins
2007-05-01 19:25 ` Christoph Lameter
2007-05-01 19:55 ` Andrew Morton
2007-05-01 20:19 ` Hugh Dickins
2007-05-01 20:36 ` Andrew Morton
2007-05-01 20:46 ` Christoph Lameter
2007-05-01 21:09 ` Andrew Morton
2007-05-02 12:54 ` Hugh Dickins
2007-05-02 17:03 ` Christoph Lameter
2007-05-02 19:11 ` Andrew Morton
2007-05-02 19:42 ` Christoph Lameter
2007-05-02 19:54 ` Sam Ravnborg
2007-05-02 20:14 ` Christoph Lameter
2007-05-02 18:52 ` Siddha, Suresh B
2007-05-02 18:58 ` Christoph Lameter
2007-05-01 21:08 ` Christoph Lameter
2007-05-02 12:45 ` Hugh Dickins
2007-05-02 17:01 ` Christoph Lameter
2007-05-02 18:08 ` Hugh Dickins
2007-05-02 18:28 ` Christoph Lameter
2007-05-02 18:42 ` Andrew Morton
2007-05-02 18:53 ` Christoph Lameter
2007-05-02 17:25 ` Christoph Lameter
2007-05-02 18:36 ` Hugh Dickins
2007-05-02 18:39 ` Christoph Lameter
2007-05-02 18:57 ` Andrew Morton
2007-05-02 19:01 ` Christoph Lameter
2007-05-02 19:18 ` Pekka Enberg
2007-05-02 19:34 ` Christoph Lameter
2007-05-02 19:43 ` Christoph Lameter
2007-05-03 8:15 ` Andrew Morton
2007-05-03 8:27 ` William Lee Irwin III
2007-05-03 16:30 ` Christoph Lameter
2007-05-03 8:46 ` Hugh Dickins
2007-05-03 8:57 ` Andrew Morton
2007-05-03 9:15 ` Hugh Dickins
2007-05-03 21:04 ` 2.6.22 -mm merge plans: slub on PowerPC Hugh Dickins
2007-05-03 21:15 ` Christoph Lameter
2007-05-03 22:41 ` Hugh Dickins
2007-05-04 0:25 ` Benjamin Herrenschmidt
2007-05-04 0:54 ` Christoph Lameter
2007-05-03 16:45 ` 2.6.22 -mm merge plans: slub Christoph Lameter
2007-05-03 15:54 ` swap-prefetch: 2.6.22 -mm merge plans Ingo Molnar
2007-05-03 16:15 ` Michal Piotrowski
2007-05-03 16:23 ` Michal Piotrowski
2007-05-03 22:14 ` Con Kolivas
2007-05-04 7:34 ` Nick Piggin
2007-05-04 8:52 ` Ingo Molnar
2007-05-04 9:09 ` Nick Piggin
2007-05-04 12:10 ` Con Kolivas
2007-05-05 8:42 ` Con Kolivas
2007-05-06 10:13 ` [ck] " Antonino Ingargiola
2007-05-06 18:22 ` Jory A. Pratt
2007-05-09 23:28 ` Con Kolivas
2007-05-10 0:05 ` Nick Piggin
2007-05-10 1:34 ` Con Kolivas
2007-05-10 1:56 ` Nick Piggin
2007-05-10 3:48 ` Ray Lee
2007-05-10 3:56 ` Nick Piggin
2007-05-10 5:52 ` Ray Lee
2007-05-10 7:04 ` Nick Piggin
2007-05-10 7:20 ` William Lee Irwin III
2007-05-10 12:34 ` Ray Lee [this message]
2007-05-12 4:46 ` [PATCH] mm: swap prefetch improvements Con Kolivas
2007-05-12 5:03 ` Paul Jackson
2007-05-12 5:15 ` Con Kolivas
2007-05-12 5:51 ` Paul Jackson
2007-05-12 7:28 ` Con Kolivas
2007-05-12 8:14 ` Paul Jackson
2007-05-12 8:21 ` Con Kolivas
2007-05-12 8:37 ` Paul Jackson
2007-05-12 8:57 ` [PATCH respin] " Con Kolivas
2007-05-21 10:03 ` [PATCH] " Ingo Molnar
2007-05-21 13:44 ` Con Kolivas
2007-05-21 16:00 ` Ingo Molnar
2007-05-22 10:15 ` Antonino Ingargiola
2007-05-22 10:20 ` Con Kolivas
2007-05-22 10:25 ` Ingo Molnar
2007-05-22 10:37 ` Con Kolivas
2007-05-22 10:46 ` Ingo Molnar
2007-05-22 10:54 ` Con Kolivas
2007-05-22 10:57 ` Ingo Molnar
2007-05-22 11:04 ` Con Kolivas
[not found] ` <20070522111104.GA14950@elte.hu>
2007-05-22 11:12 ` Ingo Molnar
2007-05-22 20:18 ` [ck] " Michael Chang
2007-05-22 20:31 ` Ingo Molnar
2007-05-10 3:58 ` swap-prefetch: 2.6.22 -mm merge plans Con Kolivas
2007-05-07 14:28 ` Bill Davidsen
2007-05-07 14:18 ` Bill Davidsen
2007-05-07 17:47 ` Josef Sipek
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