Freebsd IP Forwarding performance (question,
and some info) [7-stable, current, em, smp]
paul at gtcomm.net
Fri Jul 11 05:12:08 UTC 2008
I tested Linux in bridge configuration with the same machine and it
CPUed out at about 600kpps through the bridge..
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..
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..
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