From: "Antonino Ingargiola" <tritemio@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Con Kolivas <kernel@kolivas.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Ray Lee <ray-lk@madrabbit.org>, ck list <ck@vds.kolivas.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] mm: swap prefetch improvements
Date: Tue, 22 May 2007 12:15:30 +0200 [thread overview]
Message-ID: <5486cca80705220315oe4a42a2x366cff682333075c@mail.gmail.com> (raw)
In-Reply-To: <20070521160029.GA28715@elte.hu>
2007/5/21, Ingo Molnar <mingo@elte.hu>:
>
> * Con Kolivas <kernel@kolivas.org> wrote:
>
> > > A suggestion for improvement: right now swap-prefetch does a small
> > > bit of swapin every 5 seconds and stays idle inbetween. Could this
> > > perhaps be made more agressive (optionally perhaps), if the system
> > > is not swapping otherwise? If block-IO level instrumentation is
> > > needed to determine idleness of block IO then that is justified too
> > > i think.
> >
> > Hmm.. The timer waits 5 seconds before trying to prefetch, but then
> > only stops if it detects any activity elsewhere. It doesn't actually
> > try to go idle in between but it doesn't take much activity to put it
> > back to sleep, hence detecting yet another "not quite idle" period and
> > then it goes to sleep again. I guess the sleep interval can actually
> > be changed as another tunable from 5 seconds to whatever the user
> > wanted.
>
> there was nothing else running on the system - so i suspect the swapin
> activity flagged 'itself' as some 'other' activity and stopped? The
> swapins happened in 4 bursts, separated by 5 seconds total idleness.
I've noted burst swapins separated by some seconds of pause in my
desktop system too (with sp_tester and an idle gnome).
Regards,
~ Antonio
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2007-05-22 10:15 UTC|newest]
Thread overview: 180+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-30 23:20 2.6.22 -mm merge plans 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
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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5486cca80705220315oe4a42a2x366cff682333075c@mail.gmail.com \
--to=tritemio@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=ck@vds.kolivas.org \
--cc=kernel@kolivas.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mingo@elte.hu \
--cc=nickpiggin@yahoo.com.au \
--cc=ray-lk@madrabbit.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).