From: William Lee Irwin III <wli@holomorphy.com>
To: Marc Singer <elf@buici.com>
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: vmscan.c heuristic adjustment for smaller systems
Date: Sat, 17 Apr 2004 14:33:33 -0700 [thread overview]
Message-ID: <20040417213333.GS743@holomorphy.com> (raw)
In-Reply-To: <20040417212958.GA8722@flea>
On Sat, Apr 17, 2004 at 12:38:55PM -0700, William Lee Irwin III wrote:
>> Marc Singer reported an issue where an embedded ARM system performed
>> poorly due to page replacement potentially prematurely replacing
>> mapped memory where there was very little mapped pagecache in use to
>> begin with.
>> Marc Singer has results where this is an improvement, and hopefully can
>> clarify as-needed. Help determining whether this policy change is an
>> improvement for a broader variety of systems would be appreciated.
On Sat, Apr 17, 2004 at 02:29:58PM -0700, Marc Singer wrote:
> I have some numbers to clarify the 'improvement'.
> Setup:
> ARM922 CPU, 200MHz, 32MiB RAM
> NFS mounted rootfs, tcp, hard, v3, 4K blocks
> Test application copies 41MiB file and prints the elapsed time
> The two scenarios differ only in the setting of /proc/sys/vm/swappiness.
This doesn't match your first response. Anyway, this one is gets
scrapped. I guess if swappiness solves it, then so much the better.
-- wli
next prev parent reply other threads:[~2004-04-17 21:33 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-17 19:38 vmscan.c heuristic adjustment for smaller systems William Lee Irwin III
2004-04-17 21:29 ` Marc Singer
2004-04-17 21:33 ` William Lee Irwin III [this message]
2004-04-17 21:52 ` Marc Singer
2004-04-18 1:06 ` William Lee Irwin III
2004-04-18 5:05 ` Marc Singer
2004-04-17 23:21 ` Andrew Morton
2004-04-17 23:30 ` Marc Singer
2004-04-17 23:51 ` Andrew Morton
2004-04-18 0:11 ` Trond Myklebust
2004-04-18 0:23 ` Marc Singer
2004-04-18 3:37 ` Nick Piggin
2004-04-18 4:17 ` William Lee Irwin III
2004-04-18 4:41 ` Nick Piggin
2004-04-18 5:10 ` Marc Singer
2004-04-18 5:19 ` Nick Piggin
2004-04-18 5:35 ` Marc Singer
2004-04-18 5:41 ` Nick Piggin
2004-04-18 23:44 ` Marc Singer
2004-04-18 9:29 ` Russell King
2004-04-18 1:59 ` William Lee Irwin III
2004-04-18 3:53 ` Andrew Morton
2004-04-18 5:38 ` Marc Singer
2004-04-18 5:52 ` Andrew Morton
2004-04-18 6:15 ` Marc Singer
2004-04-19 0:26 ` Rik van Riel
2004-04-19 0:39 ` Marc Singer
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