Marek Kierdelewicz wrote:
Hi there,
I used a SunFire x2100 which has 2 Ghz Opteron and PCI-Xpress slot
into which I plugged in a dual port gigE Intel PCI-Xpress card.
What was the software configuration of this host? What kernel
have you used for the test (compiled for x86 or amd64; dual-core
aware sheduler or not).
stock x86 32 bit kernel 2.4.20. No dual core optimisations.
Out of the curiosity ... dual port nic generates one interrupt or two
per port? I asume the first is more probable. This leads to another
question - has interrupt been balanced between cores?
I'm unaware of how it was configured.
Got a raw forwarding performance of 800Kpps for 64B packets. This
beat a CISCO 3845 which gave 600Kpps.
Thanks for the input :).
Right now my production border router (BGP+some firewall rules+some QoS,
vlans @ P4 3GHz Linux 2.6, 2xBroadcom PCI-X, 1xIntel E1000 PCI-X) is 91%
saturated (CPU) at peek hours and during the time it forwards 344,8Kpps
with avg. packet sized 69 bytes.
The Opteron was 100% utilised at 800Kpps for 64B pkts. I could do
bi-directional line rate on gigE for 512/1500B pkts (approx 500/164Kpps)
with 65%/25% cpu utilisation
I'll try to determine raw forwarding performance when box goes out
of production env, so we'll have a clear comparison picture.
regards,
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