linux-kernel - Re: Btrfs v0.16 released

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Message-ID: <Pine.LNX.4.62.0808181931220.32726@tamago.serverit.net>
Date:	Mon, 18 Aug 2008 20:37:12 +0300 (EEST)
From:	Szabolcs Szakacsits <szaka@...s-3g.com>
To:	Chris Mason <chris.mason@...cle.com>
cc:	linux-btrfs <linux-btrfs@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: Btrfs v0.16 released


On Mon, 18 Aug 2008, Chris Mason wrote:
> On Sat, 2008-08-16 at 22:26 +0300, Szabolcs Szakacsits wrote:
> > 
> > We tried compilebench (-i 30 -r 0) just for fun using kernel 2.6.26, 
> > freshly formatted partition, with defaults. Results:
> > 
> >               MB/s    Runtime (s)
> >              -----    -----------
> >   ext3       13.24        877
> >   btrfs      12.33        793
> 
> Thanks for running things.
> 
> The code in the btrfs-unstable tree has all my performance fixes.
> You'll need it to get good results.  

The numbers are indeed much better:

                        MB/s    Runtime (s)
                       -----    -----------
   btrfs-unstable      17.09        572

The disk is capable of 40+ MB/s however the test partition was one of the 
last ones and as I figured it out now, it can do only 26 MB/sec. Btrfs bulk 
write easily sustains it. The write speed was 21 MB/s during the benchmark, 
so btrfs is the closest to the possible best write speed in the test 
environment.

	Szaka

--
NTFS-3G:  http://ntfs-3g.org

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