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From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Theurer <habanero@us.ibm.com>
Cc: "Martin J. Bligh" <mbligh@aracnet.com>,
	Andrew Morton <akpm@digeo.com>,
	linux-kernel@vger.kernel.org
Subject: Re: 2.5.38-mm2 dbench $N times
Date: Wed, 25 Sep 2002 16:57:54 -0700	[thread overview]
Message-ID: <20020925235754.GH3530@holomorphy.com> (raw)
In-Reply-To: <200209251351.58355.habanero@us.ibm.com>

On Wednesday 25 September 2002 1:03 am, Martin J. Bligh wrote:
>> Does dbench have any sort of CPU locality between who read it
>> into pagecache, and who read it out again? If not, you stand
>> 7/8 chance of being on the wrong node, and getting 1/20 of the
>> mem bandwidth ....

On Wed, Sep 25, 2002 at 01:51:58PM -0500, Andrew Theurer wrote:
> Pretty sure each dbench child does it's own write/read to only it's
> own data. There is no sharing that I am aware of between the processes.
> How about running in tmpfs to avoid any disk IO at all?  

tmpfs needs some fixes before it can be used for that. Hugh's working
on it.


Cheers,
Bill

      parent reply	other threads:[~2002-09-25 23:53 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-24 13:20 William Lee Irwin III
2002-09-24 17:47 ` Andrew Morton
2002-09-25  0:18   ` William Lee Irwin III
2002-09-25  0:25     ` William Lee Irwin III
2002-09-25  0:31     ` Andrew Morton
2002-09-25  0:39       ` William Lee Irwin III
2002-09-25  0:46         ` Andrew Morton
2002-09-25  1:08       ` Dave Hansen
2002-09-25  1:17         ` William Lee Irwin III
2002-09-25  6:03       ` Martin J. Bligh
2002-09-25 18:51         ` Andrew Theurer
2002-09-25 20:57           ` Martin J. Bligh
2002-09-25 21:05             ` Andrew Theurer
2002-09-25 23:57           ` William Lee Irwin III [this message]

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