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Date: Sun, 29 Jun 2008 20:34:47 -0400
To: Ingo Flaschberger <if@xip.at>, Paul <paul@gtcomm.net>
From: Mike Tancsa <mike@sentex.net>
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Cc: FreeBSD Net <freebsd-net@freebsd.org>
Subject: Re: Freebsd IP Forwarding  performance (question,	and some
 info) [7-stable, current, em, smp]
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At 08:16 PM 6/29/2008, Ingo Flaschberger wrote:
>Dear Paul,
>
>>Yes it does but it seems to use a lot more of one cpu than the 
>>others so It's really not SMP.. Can I stop it from doing this with 
>>some setting?
>>Why can't there be 4 taskq's?
>
>it is possible, but it need to be coded.
>
>hz 4000 is also too high, use 1000-2000
>http://www.tancsa.com/blast.html


Those are very old test results using a fairly different em driver 
than whats in the tree.

You might look at
http://people.yandex-team.ru/~wawa/
on RELENG_6.  I havent tested it, but supposedly its optimized for 
forwarding on SMP hardware

         ---Mike