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From: Rik van Riel <riel@redhat.com>
To: yunfeng zhang <zyf.zeroos@gmail.com>
Cc: linux-kernel@vger.kernel.org, Hugh Dickins <hugh@veritas.com>,
	linux-mm@kvack.org
Subject: Re: [PATCH 2.6.20-rc5 1/1] MM: enhance Linux swap subsystem
Date: Thu, 22 Feb 2007 22:33:20 -0500	[thread overview]
Message-ID: <45DE6080.6030904@redhat.com> (raw)
In-Reply-To: <4df04b840702221831x76626de1rfa70cb653b12f495@mail.gmail.com>

yunfeng zhang wrote:
> Performance improvement should occur when private pages of multiple 
> processes are messed up,

Ummm, yes.  Linux used to do this, but doing virtual scans
just does not scale when a system has a really large amount
of memory, a large number of processes and multiple zones.

We've seen it fall apart with as little as 8GB of RAM.

-- 
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is.  Each group
calls the other unpatriotic.

  reply	other threads:[~2007-02-23  3:33 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-22  7:09 yunfeng zhang
2007-01-22 10:21 ` Pavel Machek
2007-01-22 20:00 ` Al Boldi
2007-01-23  4:21   ` yunfeng zhang
2007-01-23  5:08     ` yunfeng zhang
2007-01-24 21:15       ` Hugh Dickins
2007-01-26  4:58         ` yunfeng zhang
2007-01-29  5:29         ` yunfeng zhang
     [not found]         ` <4df04b840701301852i41687edfl1462c4ca3344431c@mail.gmail.com>
     [not found]           ` <Pine.LNX.4.64.0701312022340.26857@blonde.wat.veritas.com>
2007-02-13  5:52             ` yunfeng zhang
2007-02-20  9:06               ` yunfeng zhang
2007-02-22  1:58                 ` yunfeng zhang
2007-02-22  2:19                   ` Rik van Riel
2007-02-23  2:31                     ` yunfeng zhang
2007-02-23  3:33                       ` Rik van Riel [this message]
2007-02-25  1:47                         ` yunfeng zhang
2007-08-23  9:47                           ` yunfeng zhang
2007-08-23 15:56                             ` Randy Dunlap

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