From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: balbir@linux.vnet.ibm.com
Cc: kosaki.motohiro@jp.fujitsu.com,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Rik van Riel <riel@redhat.com>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
Nick Piggin <npiggin@suse.de>
Subject: Re: [RFC][PATCH] page reclaim throttle take2
Date: Wed, 27 Feb 2008 14:13:22 +0900 [thread overview]
Message-ID: <20080227141227.424F.KOSAKI.MOTOHIRO@jp.fujitsu.com> (raw)
In-Reply-To: <47C4EF2D.90508@linux.vnet.ibm.com>
Hi balbir-san,
> >> CONFIG_SIMULTANEOUS_PAGE_RECLAIMERS
> >> int
> >> default 3
> >> depends on DEBUG
> >> help
> >> This value determines the number of threads which can do page reclaim
> >> in a zone simultaneously. If this is too big, performance under heavy memory
> >> pressure will decrease.
> >> If unsure, use default.
> >> ==
> >>
> >> Then, you can get performance reports from people interested in this
> >> feature in test cycle.
> >
> > hm, intersting.
> > but sysctl parameter is more better, i think.
> >
> > OK, I'll add it at next post.
>
> I think sysctl should be interesting. The config option provides good
> documentation, but it is static in nature (requires reboot to change). I wish we
> could have the best of both worlds.
OK, I obey your opinion.
- kosaki
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next prev parent reply other threads:[~2008-02-27 5:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-26 2:32 KOSAKI Motohiro
2008-02-26 21:18 ` Peter Zijlstra
2008-02-27 0:50 ` KAMEZAWA Hiroyuki
2008-02-27 4:26 ` KOSAKI Motohiro
2008-02-27 4:27 ` Balbir Singh
2008-02-27 4:45 ` KOSAKI Motohiro
2008-02-27 5:00 ` KAMEZAWA Hiroyuki
2008-02-27 5:04 ` KOSAKI Motohiro
2008-02-27 5:03 ` Balbir Singh
2008-02-27 5:13 ` KOSAKI Motohiro [this message]
2008-02-27 5:19 ` David Rientjes
2008-02-27 5:33 ` KOSAKI Motohiro
2008-02-27 5:47 ` David Rientjes
2008-02-27 5:48 ` Balbir Singh
2008-02-27 6:09 ` David Rientjes
2008-02-27 7:10 ` KOSAKI Motohiro
2008-02-27 7:19 ` David Rientjes
2008-02-27 7:51 ` KAMEZAWA Hiroyuki
2008-02-27 7:56 ` David Rientjes
2008-02-27 8:09 ` KAMEZAWA Hiroyuki
2008-02-27 15:30 ` Rik van Riel
2008-02-27 7:59 ` Balbir Singh
2008-02-27 8:47 ` David Rientjes
2008-02-27 9:01 ` Balbir Singh
2008-02-27 9:44 ` Peter Zijlstra
2008-02-27 6:52 ` KOSAKI Motohiro
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