From: Joel Becker <Joel.Becker@oracle.com>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: axboe@kernel.dk, vgoyal@redhat.com, linux-kernel@vger.kernel.org,
linux-ext4@vger.kernel.org
Subject: Re: [PATCH 0/3 v5][RFC] ext3/4: enhance fsync performance when using CFQ
Date: Tue, 22 Jun 2010 15:13:07 -0700 [thread overview]
Message-ID: <20100622221306.GA20090@mail.oracle.com> (raw)
In-Reply-To: <1277242502-9047-1-git-send-email-jmoyer@redhat.com>
On Tue, Jun 22, 2010 at 05:34:59PM -0400, Jeff Moyer wrote:
> Running iozone with the fsync flag, or fs_mark, the performance of CFQ is
> far worse than that of deadline for enterprise class storage when dealing
> with file sizes of 8MB or less. I used the following command line as a
> representative test case:
>
> fs_mark -S 1 -D 10000 -N 100000 -d /mnt/test/fs_mark -s 65536 -t 1 -w 4096 -F
I'd be interested in how ocfs2 does, because we use jbd2 too.
Joel
--
Life's Little Instruction Book #139
"Never deprive someone of hope; it might be all they have."
Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
next prev parent reply other threads:[~2010-06-22 22:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-22 21:34 [PATCH 0/3 v5][RFC] ext3/4: enhance fsync performance when using CFQ Jeff Moyer
2010-06-22 21:35 ` [PATCH 1/3] block: Implement a blk_yield function to voluntarily give up the I/O scheduler Jeff Moyer
2010-06-23 5:04 ` Andrew Morton
2010-06-23 14:50 ` Jeff Moyer
2010-06-24 0:46 ` Vivek Goyal
2010-06-25 16:51 ` Jeff Moyer
2010-06-25 18:55 ` Jens Axboe
2010-06-25 19:57 ` Jeff Moyer
2010-06-25 20:02 ` Vivek Goyal
2010-06-22 21:35 ` [PATCH 2/3] jbd: yield the device queue when waiting for commits Jeff Moyer
2010-06-22 21:35 ` [PATCH 3/3] jbd2: yield the device queue when waiting for journal commits Jeff Moyer
2010-06-22 22:13 ` Joel Becker [this message]
2010-06-23 9:20 ` [PATCH 0/3 v5][RFC] ext3/4: enhance fsync performance when using CFQ Christoph Hellwig
2010-06-23 13:03 ` Jeff Moyer
2010-06-23 9:30 ` Tao Ma
2010-06-23 13:06 ` Jeff Moyer
2010-06-24 5:54 ` Tao Ma
2010-06-24 14:56 ` Jeff Moyer
2010-06-27 13:48 ` Jeff Moyer
2010-06-28 6:41 ` Tao Ma
2010-06-28 13:58 ` Jeff Moyer
2010-06-28 23:16 ` Tao Ma
2010-06-29 14:56 ` Jeff Moyer
2010-06-30 0:31 ` Tao Ma
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