From: Mike Fedyk <mfedyk@matchmail.com>
To: Chuck Lever <cel@citi.umich.edu>
Cc: Marcelo Tosatti <marcelo@conectiva.com.br>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] 2.4 read ahead never reads the last page in a file
Date: Thu, 4 Dec 2003 17:54:37 -0800 [thread overview]
Message-ID: <20031205015437.GI29119@mis-mike-wstn.matchmail.com> (raw)
In-Reply-To: <Pine.BSO.4.33.0312031800270.24127-100000@citi.umich.edu>
On Wed, Dec 03, 2003 at 06:10:31PM -0500, Chuck Lever wrote:
> generic_file_readahead never reads the last page of a file. this means
> the last page is always read synchronously by do_generic_file_read.
Has this been fixed in 2.6? If so, it would improve the speed of mail
servers that use maildir, (I think mbox should be ok, since the data that
was appended has a good chance of still being in memory. Though, to compute
UIDL for pop3, it has to read the entire mbox file, forcing other mbox users
out of cache, and then evening up performance between the two. Though this
patch should help maildir more.)
next prev parent reply other threads:[~2003-12-05 1:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-03 23:10 Chuck Lever
2003-12-05 1:32 ` Andrea Arcangeli
2003-12-05 15:51 ` Marcelo Tosatti
2003-12-05 1:54 ` Mike Fedyk [this message]
2003-12-06 8:20 ` Willy Tarreau
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