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Date:      Sat, 05 Jul 2008 19:10:40 -0400
From:      Paul <paul@gtcomm.net>
To:        Bart Van Kerckhove <bart@it-ss.be>
Cc:        FreeBSD Net <freebsd-net@freebsd.org>, Ingo Flaschberger <if@xip.at>
Subject:   Re: Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp]
Message-ID:  <486FFF70.3090402@gtcomm.net>
In-Reply-To: <2d3001c8def1$f4309b90$020b000a@bartwrkstxp>
References:  <4867420D.7090406@gtcomm.net> <48699960.9070100@gtcomm.net><ea7b9c170806302005n2a66f592h2127f87a0ba2c6d2@mail.gmail.com><20080701033117.GH83626@cdnetworks.co.kr><ea7b9c170806302050p2a3a5480t29923a4ac2d7c852@mail.gmail.com><4869ACFC.5020205@gtcomm.net> <4869B025.9080006@gtcomm.net><486A7E45.3030902@gtcomm.net> <486A8F24.5010000@gtcomm.net><486A9A0E.6060308@elischer.org> <486B41D5.3060609@gtcomm.net><alpine.LFD.1.10.0807021052041.557@filebunker.xip.at><486B4F11.6040906@gtcomm.net><alpine.LFD.1.10.0807021155280.557@filebunker.xip.at><486BC7F5.5070604@gtcomm.net><20080703160540.W6369@delplex.bde.org><486C7F93.7010308@gtcomm.net><20080703195521.O6973@delplex.bde.org><486D35A0.4000302@gtcomm.net><alpine.LFD.1.10.0807041106591.19613@filebunker.xip.at><486DF1A3.9000409@gtcomm.net><alpine.LFD.1.10.0807041303490.20760@filebunker.xip.at><486E65E6.3060301@gtcomm.net> <alpine.LFD.1.10.0807052356130.2145@filebunker.xip.at> <2d3001c8def1$f4309b90$020b000a@bartwrkstxp>

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ULE + PREEMPTION for non SMP
no major differences with SMP with ULE/4BSD and preemption ON/OFF

32 bit UP test coming up with new cpu
and I'm installing dragonfly sometime this weekend :]
UP: 1mpps in one direction with no firewall/no routing table is not too 
bad, but 1mpps both directions is the goal here
700kpps with full bgp table in one direction is not too bad
Ipfw needs a lot of work, barely gets 500kpps with no routing table with 
a few ipfw rules loaded.. that's horrible
Linux barely takes a hit when you start loading iptables rules , but 
then again linux has a HUGE problem with routing
random packet sources/ports .. grr
My problem Is I need some box to do fast routing and some to do 
firewall.. :/
I'll have 32 bit 7-stable UP test with ipfw/routing table and then move 
on to dragonfly.
I'll post the dragonfly results here as well as sign up for their 
mailing list.


Bart Van Kerckhove wrote:
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> Paul / Ingo,
>   
>>> I tried all of this :/  still, 256/512 descriptors seem to work the
>>> best. Happy to let you log into the machine and fiddle around if you
>>> want :) 
>>>       
> I've been watching this thread closely, since I'm in a very similair
> situation.
> A few questions/remarks:
>
> Does ULE provide better performance than 4BSD for forwarding?
> Did you try freebsd4 as well? This thread had a report about that quite
> opposite to my own experiences, -4 seemed to be a lot faster at forwarding
> than anything else I 've tried so far.
> Obviously the thing I'm interested in is IMIX - and 64byte packets.
> Does anyone have any benchmarks for DragonFly? I asked around on IRC, but
> that nor google turned up any useful results.
>
> <snip> 
>   
>> I don't think you will be able to route 64byte packets at 1gbit
>> wirespeed (2Mpps) with a current x86 platform.
>>     
> Are there actual hardware related reasons this should not be possible, or
> is this purely lack of dedicated work towards this goal?
>
> <snip>
>   
>> Theres a "sun" used at quagga dev as bgp-route-server.
>> http://quagga.net/route-server.php
>> (but they don't answered my question regarding fw-performance).
>>     
>
>
> the Quagga guys are running a sun T1000 (niagara 1) route server - I happen
> to have the machine in my racks,
> please let me know if you want to run some tests on it, I'm sure they won't
> mind ;-)
> It should also make a great testbed for SMP performance testing imho (and
> they're pretty cheap these days)
> Also, feel free to use me as a relay for your questions, they're not always
> very reachable.
> <snap>
>
>   
>> Perhaps you have some better luck at some different hardware systems
>> (ppc, mips, ..?) or use freebsd only for routing-table-updates and
>> special network-cards (netfpga) for real routing.
>>     
> The netfpga site seems more or less dead - is this project still alive?
> It does look like a very interesting idea, even though it's currently quite
> linux-centric (and according to docs doesn't have VLAN nor ip6 support, the
> former being quite a dealbreaker)
>
> Paul: I'm looking forward to the C2D 32bit benchmarks (maybe throw in a
> freebsd4 and/or dragonfly bench if you can..) - appreciate the lots of
> information you are providing us :)
>
> Met vriendelijke groet / With kind regards,
>
> Bart Van Kerckhove
> http://friet.net/pgp.txt
>
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>   




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