From: Jens Axboe <jens.axboe@oracle.com>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org,
vgoyal@redhat.com
Subject: Re: [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ
Date: Thu, 15 Apr 2010 16:03:49 +0200 [thread overview]
Message-ID: <20100415140348.GB27497@kernel.dk> (raw)
In-Reply-To: <x494ojcj1tc.fsf@segfault.boston.devel.redhat.com>
On Thu, Apr 15 2010, Jeff Moyer wrote:
> Jens Axboe <jens.axboe@oracle.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
prev parent reply other threads:[~2010-04-15 14:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-14 21:17 [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ Jeff Moyer
2010-04-14 21:17 ` [PATCH 1/4] cfq-iosched: Keep track of average think time for the sync-noidle workload Jeff Moyer
2010-04-14 21:37 ` Vivek Goyal
2010-04-14 23:06 ` Jeff Moyer
2010-04-14 21:17 ` [PATCH 2/4] block: Implement a blk_yield function to voluntarily give up the I/O scheduler Jeff Moyer
2010-04-14 21:46 ` Vivek Goyal
2010-04-15 10:33 ` Jens Axboe
2010-04-15 15:49 ` Jeff Moyer
2010-04-14 21:17 ` [PATCH 3/4] jbd: yield the device queue when waiting for commits Jeff Moyer
2010-04-14 21:17 ` [PATCH 4/4] jbd2: yield the device queue when waiting for journal commits Jeff Moyer
2010-04-15 10:33 ` Jens Axboe
2010-04-15 10:33 ` [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ Jens Axboe
2010-04-15 13:05 ` Jeff Moyer
2010-04-15 13:08 ` Jens Axboe
2010-04-15 13:13 ` Jeff Moyer
2010-04-15 14:03 ` Jens Axboe [this message]
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