From: Casey Dahlin <cdahlin@redhat.com>
To: Ralf Gross <Ralf-Lists@ralfgross.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: io-scheduler tuning for better read/write ratio
Date: Tue, 16 Jun 2009 14:43:39 -0400 [thread overview]
Message-ID: <4A37E7DB.7030100@redhat.com> (raw)
In-Reply-To: <20090616184027.GB7043@p15145560.pureserver.info>
On 06/16/2009 02:40 PM, Ralf Gross wrote:
> David Newall schrieb:
>> Ralf Gross wrote:
>>> write throughput is much higher than the read throughput (40 MB/s
>>> read, 90 MB/s write).
>
> Hm, but I get higher read throughput (160-200 MB/s) if I don't write
> to the device at the same time.
>
> Ralf
How specifically are you testing? It could depend a lot on the particular access patterns you're using to test.
--CJD
next prev parent reply other threads:[~2009-06-16 18:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-16 15:43 io-scheduler tuning for better read/write ratio Ralf Gross
2009-06-16 16:41 ` David Newall
2009-06-16 18:40 ` Ralf Gross
2009-06-16 18:43 ` Casey Dahlin [this message]
2009-06-16 18:56 ` Ralf Gross
2009-06-16 20:16 ` Jeff Moyer
2009-06-22 14:43 ` Jeff Moyer
2009-06-22 16:31 ` Ralf Gross
2009-06-22 19:42 ` Jeff Moyer
2009-06-23 7:24 ` Ralf Gross
2009-06-23 13:53 ` Jeff Moyer
2009-06-24 7:25 ` Ralf Gross
2009-06-24 7:57 ` Al Boldi
2009-06-25 7:26 ` Ralf Gross
2009-06-25 13:45 ` Al Boldi
2009-06-25 7:27 ` Ralf Gross
2009-06-26 2:19 ` Wu Fengguang
2009-06-26 10:44 ` Jens Axboe
2009-06-27 3:46 ` Wu Fengguang
2009-06-29 9:47 ` Ralf Gross
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