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Message-Id: <20080219160711.7E99.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date: Tue, 19 Feb 2008 16:09:07 +0900
From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To: Nick Piggin <nickpiggin@...oo.com.au>
Cc: kosaki.motohiro@...fujitsu.com,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Balbir Singh <balbir@...ux.vnet.ibm.com>,
Rik van Riel <riel@...hat.com>,
Lee Schermerhorn <Lee.Schermerhorn@...com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] the proposal of improve page reclaim by throttle
Hi Nick,
> Yeah this is definitely needed and a nice result.
>
> I'm worried about a) placing a global limit on parallelism, and b)
> placing a limit on parallelism at all.
sorry, i don't understand yet.
a) and b) have any relation?
>
> I think it should maybe be a per-zone thing...
>
> What happens if you make it a per-zone mutex, and allow just a single
> process to reclaim pages from a given zone at a time? I guess that is
> going to slow down throughput a little bit in some cases though...
That makes sense.
OK.
I'll repost after 2-3 days.
Thanks.
- kosaki
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