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Date:      Thu, 03 Jul 2008 12:40:58 -0400
From:      Steve Bertrand <steve@ibctech.ca>
To:        Ingo Flaschberger <if@xip.at>
Cc:        FreeBSD Net <freebsd-net@freebsd.org>, Paul <paul@gtcomm.net>
Subject:   Re: Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp]
Message-ID:  <486D011A.7080406@ibctech.ca>
In-Reply-To: <alpine.LFD.1.10.0807031455080.9569@filebunker.xip.at>
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>	<486A7E45.3030902@gtcomm.net> <486A8F24.5010000@gtcomm.net>	<486A9A0E.6060308@elischer.org> <486B41D5.3060609@gtcomm.net>	<alpine.LFD.1.10.0807021052041.557@filebunker.xip.at>	<486C7611.9030905@gtcomm.net>	<alpine.LFD.1.10.0807031248250.9569@filebunker.xip.at>	<486CCB6A.6070104@ibctech.ca> <alpine.LFD.1.10.0807031455080.9569@filebunker.xip.at>

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Ingo Flaschberger wrote:
> Dear Steve,
> 
>>> My next "router" appliance will be:
>>> http://www.axiomtek.com.tw/products/ViewProduct.asp?view=429
>>
>> This is exactly the device that I have been testing with (just 
>> rebranded).
> 
> cool.
> what performace do you reach?

After some very quick testing with everything default, I am witnessing 
results that are far below what I would have expected. I have a few 
questions:

- how do I identify if polling on an interface is enabled? I see no 
difference with ifconfig output

- do I need to compile a new kernel to be able to enable/disable polling?

- without moving some hardware around, I only have a single box 
connected to a router, and I've been testing from that box to a 
different interface within the router. Will the test results be optimal 
if I ping all the way through the router to a second device connected to 
it?

- how are the results affected when generating and receiving the test 
packets within the router itself (as opposed to using outside devices)?

Steve



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