Freebsd IP Forwarding performance (question,
and some info) [7-stable, current, em, smp]
stefan.lambrev at moneybookers.com
Fri Jul 11 10:09:21 UTC 2008
> I tested Linux in bridge configuration with the same machine and it
> CPUed out at about 600kpps through the bridge..
600kpps incoming or 600kpps incoming+ outgoing ?
> That's a bit low :/ Soft interrupt using all the cpu. Same opteron
> 2222, 82571EB Pci express NIC.
> Tried SMP/ non-smp , load balanced irqs, etc..
Does hwpmc work out of the box (FreeBSD) with those CPUs?
> Good news is using iptables only adds a few percentage onto the CPU
> usage. But still, what's with that..
> So far FreeBSD got the highest pps rating for forwarding. I haven't
> tried bridge mode. Ipfw probably takes a big hit in that too though.
> Looking for an 82575 to test..
P.S. It was a nice chat, but what we can expect from the future? Any
plans, patches etc?
Someone suggested to install 8-current and test with it as this is the
"fast" way to have something included in FreeBSD.
I can do this - I can install 8-current, patch it and put it under load
and report results, but need patches :)
I guess Paul is in the same situation ..
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