linux-kernel - Re: Very slow header cache in mutt if the maildir is on ext3

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Message-ID: <20081217010334.GA1212@dose.home.local>
Date:	Wed, 17 Dec 2008 02:03:34 +0100
From:	Tino Keitel <tino.keitel@....de>
To:	linux-kernel@...r.kernel.org
Subject: Re: Very slow header cache in mutt if the maildir is on ext3

On Wed, Dec 17, 2008 at 01:52:10 +0100, Tino Keitel wrote:

[...]

> OK, after glancing at the strace output again, I see that the seek
> offsets are much more linear in the XFS case, whereas they are pretty
> random in the ext3 case.  I guess that this is connected to the order
> of the files in the maildir, which depends on the FS type.  So this is
> a bug in mutt which makes reading the header cache dead slow if the
> files are in an inconvenient order.

Just for the records: I tested again on ext3 with dir_index disabled,
and the cache was read as quickly as with XFS.

Regards,
Tino

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