linux-kernel - Re: [PATCH 03/15] readahead: bump up the default readahead size

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Message-ID: <4B85F648.1080607@redhat.com>
Date:	Wed, 24 Feb 2010 23:02:16 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Chris Mason <chris.mason@...cle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Matt Mackall <mpm@...enic.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Christian Ehrhardt <ehrhardt@...ux.vnet.ibm.com>,
	Clemens Ladisch <clemens@...isch.de>,
	Olivier Galibert <galibert@...ox.com>,
	Vivek Goyal <vgoyal@...hat.com>, Nick Piggin <npiggin@...e.de>,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/15] readahead: bump up the default readahead size

On 02/23/2010 10:10 PM, Wu Fengguang wrote:
> Use 512kb max readahead size, and 32kb min readahead size.
>
> The former helps io performance for common workloads.
> The latter will be used in the thrashing safe context readahead.

> CC: Jens Axboe<jens.axboe@...cle.com>
> CC: Chris Mason<chris.mason@...cle.com>
> CC: Peter Zijlstra<a.p.zijlstra@...llo.nl>
> CC: Martin Schwidefsky<schwidefsky@...ibm.com>
> CC: Paul Gortmaker<paul.gortmaker@...driver.com>
> CC: Matt Mackall<mpm@...enic.com>
> CC: David Woodhouse<dwmw2@...radead.org>
> Tested-by: Vivek Goyal<vgoyal@...hat.com>
> Tested-by: Christian Ehrhardt<ehrhardt@...ux.vnet.ibm.com>
> Acked-by:  Christian Ehrhardt<ehrhardt@...ux.vnet.ibm.com>
> Signed-off-by: Wu Fengguang<fengguang.wu@...el.com>

Acked-by: Rik van Riel <riel@...hat.com>
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