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From: Michael Stiller <ms@2scale.net>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: howto boost write(2) performance?
Date: Thu, 11 Oct 2007 15:50:17 +0200	[thread overview]
Message-ID: <1192110617.3696.2.camel@blackberry> (raw)
In-Reply-To: <p73odf849rq.fsf@bingen.suse.de>

On Tue, 2007-10-09 at 16:56 +0200, Andi Kleen wrote:
> Michael Stiller <ms@2scale.net> writes:
> > 
> > The write(2) performance is not good enough, the writer threads take to
> > much time, and i ask you for ideas, howto to boost the write
> > performance. 
> 
> You could use an O_DIRECT write if the data is suitably aligned
> and your IO sizes are big enough (O_DIRECT is usually a loss
> on small IOs). It will also be synchronous, but if you do it 
> from a separate thread anyways that should be fine.

Thanks to all who answered and especially to Andi. Using O_DIRECT did
the trick.

Cheers,

Michael



  parent reply	other threads:[~2007-10-11 13:50 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-09 13:50 howto boost write(2) performance? Michael Stiller
2007-10-09 10:25 ` Nick Piggin
2007-10-10  6:26   ` Michael Stiller
2007-10-09 14:19 ` Gustavo Chain
2007-10-09 14:56 ` Andi Kleen
2007-10-09 15:42   ` Boaz Harrosh
2007-10-09 16:26     ` Michael Tokarev
2007-10-11 13:50   ` Michael Stiller [this message]
2007-10-17 22:19 ` Bill Davidsen

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