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Date:      Tue, 1 Jul 2008 14:43:14 +0200 (CEST)
From:      Ingo Flaschberger <if@xip.at>
To:        Paul <paul@gtcomm.net>
Cc:        FreeBSD Net <freebsd-net@freebsd.org>
Subject:   Re: Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp]
Message-ID:  <alpine.LFD.1.10.0807011435410.24529@filebunker.xip.at>
In-Reply-To: <4869F42E.8040904@gtcomm.net>
References:  <4867420D.7090406@gtcomm.net> <200806301944.m5UJifJD081781@lava.sentex.ca> <20080701004346.GA3898@stlux503.dsto.defence.gov.au> <alpine.LFD.1.10.0807010257570.19444@filebunker.xip.at> <20080701010716.GF3898@stlux503.dsto.defence.gov.au> <alpine.LFD.1.10.0807010308320.19444@filebunker.xip.at> <486986D9.3000607@monkeybrains.net> <48699960.9070100@gtcomm.net> <ea7b9c170806302005n2a66f592h2127f87a0ba2c6d2@mail.gmail.com> <20080701033117.GH83626@cdnetworks.co.kr> <ea7b9c170806302050p2a3a5480t29923a4ac2d7c852@mail.gmail.com> <4869ACFC.5020205@gtcomm.net> <4869B025.9080006@gtcomm.net> <4869F42E.8040904@gtcomm.net>

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Dear Paul,

>
> Dual Opteron 2212, Recompiled kernel with 7-STABLE and removed a lot of junk 
> in the config, added
> options         NO_ADAPTIVE_MUTEXES   not sure if that makes any difference 
> or not, will test without.
> Used ULE scheduler, used preemption, CPUTYPE=opteron in /etc/make.conf
> 7.0-STABLE FreeBSD 7.0-STABLE #4: Tue Jul  1 01:22:18 CDT 2008 amd64
> Max input rate .. 587kpps?   Take into consideration that these packets are 
> being forwarded out em1 interface which
> causes a great impact on cpu usage.  If I set up a firewall rule to block the 
> packets it can do over 1mpps on em0 input.

would be great if you can also test with 32bit.

what value do you have at net.inet.ip.intr_queue_maxlen?

kind regards,
 	Ingo Flaschberger




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