Date: Wed, 25 Oct 2006 17:13:41 -0400
From: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
To: lkml@pengaru.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: rename() contention (BUG?)
Message-ID: <20061025211341.GB7128@filer.fsl.cs.sunysb.edu>
References: <20061025205634.GB9100@shells.gnugeneration.com>
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On Wed, Oct 25, 2006 at 03:56:34PM -0500, lkml@pengaru.com wrote:
> Hello,
> 
> I have seen some scalability problems with Maildir-based mail systems running on
> Linux (debian sarge, 2.6.8), and after much investigation I found a large part
> of the problem was rename() contention.
 
Just FYI, around 2.6.15 the i_sem was replace with i_mutex which is much
better/faster. (And I would strongly suggest you upgrade.) I would actually
like to know how much the lock contention decresed for your case.

(I'm going to read the rest when I get back.)
 
Josef "Jeff" Sipek.

-- 
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like
that.
		- Linus Torvalds
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