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Date: Mon, 23 Jul 2007 17:38:35 -0700
From: Julian Elischer <julian@elischer.org>
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To: Jeremie Le Hen <jeremie@le-hen.org>
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Cc: Jeff Roberson <jroberson@chesapeake.net>, src-committers@FreeBSD.org,
	cvs-all@FreeBSD.org, cvs-src@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern kern_descrip.c
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Jeremie Le Hen wrote:
> Hi Jeff,
> 
> On Tue, Jul 03, 2007 at 02:27:51PM -0700, Jeff Roberson wrote:
>>  For the curious, these last two patches make a substantial improvement to 
>>  mysql write performance on my 8way opteron:
>>
>>  http://people.freebsd.org/~jeff/mysqlwrite.png
>>
>>  The green line is without and the blue line is with.
> 
> Just for information, do you have any hint why Linux eventually
> performs better above 18 threads?

I think that is the wrong question..
the question is "why do we drop off after 8?"
which I'm sure Jeff is already working on.

> 
> Thank you for your work.
> Best regards,