linux-kernel - Re: Adaptive readahead V16 benchmarks

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Date:	Mon, 27 Nov 2006 14:01:31 -0800
From:	"Nate Diller" <nate.diller@...il.com>
To:	"Andrew Morton" <akpm@...l.org>, linux-kernel@...r.kernel.org,
	"Steven Pratt" <slpratt@...tin.ibm.com>,
	"Ram Pai" <linuxram@...ibm.com>, "Neil Brown" <neilb@...e.de>,
	Voluspa <lista1@...hem.se>, "Linux Portal" <linportal@...il.com>
Subject: Re: Adaptive readahead V16 benchmarks

On 11/24/06, Fengguang Wu <fengguang.wu@...il.com> wrote:
> Andrew,
>
> Here are some benchmarks for the latest adaptive readahead patchset.
>
> Most benchmarks have 3+ runs and have the numbers averaged.
> However some testing times are short and not quite stable.
>
> Most of them are carried out on my PC:
>         Seagate ST3250820A 250G/8M IDE disk, 512M Memory, AMD Sempron 2200+
>
> Basic conclusions:
> - equivalent performance in normal cases
> - much better in: busy NFS server; sparse/backward reading
> - adapts to memory size very well on randomly loading a file

These results look really good, and the code seems to be at least as
well-structured as the previous code.  I think this argues for
inclusion.

NATE
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