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Date: Wed, 25 Sep 2002 16:57:54 -0700
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
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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