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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!
Date: Mon, 12 Apr 2010 10:14:05 -0700	[thread overview]
Message-ID: <87ljcsr3tu.fsf@willster.local.flamingspork.com> (raw)
In-Reply-To: <87iq7wpubw.fsf@SSpaeth.de>

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

  reply	other threads:[~2010-04-12 17:14 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-12 13:33 please eat my data! Sebastian Spaeth
2010-04-12 14:21 ` Jameson Rollins
2010-04-12 14:41   ` racin
2010-04-12 15:24   ` Sebastian Spaeth
2010-04-12 17:14     ` Stewart Smith [this message]
2010-04-12 17:47       ` Dirk Hohndel
2010-04-12 23:10         ` Servilio Afre Puentes
2010-04-12 23:35           ` Dirk Hohndel

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