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From: Stewart Smith <stewart@flamingspork.com>
To: Sebastian Spaeth <Sebastian@SSpaeth.de>, Jameson Rollins
	<jrollins@finestructure.net>, Notmuch list <notmuch@notmuchmail.org>
Subject: Re: please eat my data!
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	<87tyrgeopc.fsf@servo.finestructure.net> <87iq7wpubw.fsf@SSpaeth.de>
Date: Mon, 12 Apr 2010 10:14:05 -0700
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On Mon, 12 Apr 2010 17:24:35 +0200, "Sebastian Spaeth" <Sebastian@SSpaeth.de> wrote:
> What I find intersting is that we have a 2x speedup and a 10x speedup
> for different queries. Olly was saying on IRC that both *should* really be
> behaving in much the same manner.

Remember that on ext3 (and pretty sure ext4) fsync is the same as
sync(). So performance depends on how much dirty data you have in your cache.

libeatmydata also gets rid of msync(), O_SYNC etc as well.

-- 
Stewart Smith