linux-ext4 - Re: [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ

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Message-ID: <20100415140348.GB27497@kernel.dk>
Date:	Thu, 15 Apr 2010 16:03:49 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org,
	vgoyal@...hat.com
Subject: Re: [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ

On Thu, Apr 15 2010, Jeff Moyer wrote:
> Jens Axboe <jens.axboe@...cle.com> writes:
> 
> >> > This is starting to look better. Can you share what tests you did? I
> >> > tried reproducing with fs_mark last time and could not.
> >> 
> >> Did you use the fs_mark command line I (think I) had posted?  What
> >> storage were you using?
> >
> > No, I didn't see any references to example command lines. I tested on a
> > few single disks, rotating and SSD. I expected the single spinning disk
> > to show the problem to some extent at least, but there was no difference
> > observed with 64kb blocks.
> 
> Boy, I'm really slipping.  Try this one:
> 
> ./fs_mark -S 1 -D 100 -N 1000 -d /mnt/test/fs_mark -s 65536 -t 1 -w 4096

Thanks Jeff, I'll give it a spin :-)

-- 
Jens Axboe

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