[openib-general] Multicast traffic performace of OFED 1.0 ipoib

[Moni Levy]

Hi,
    we are doing some performance testing of multicast traffic over
ipoib. The tests are performed by using iperf on dual 1.6G AMD PCI-X
servers with PCI-X Tavor cards with 3.4.FW.  Below are the command the
may be used to run the test.

Iperf server:
route add -net 224.0.0.0 netmask 240.0.0.0 dev ib0
/home/qa/testing-tools/iperf-2.0.2/iperf -us -B 224.4.4.4 -i 1

Iperf client:
route add -net 224.0.0.0 netmask 240.0.0.0 dev ib0
/home/qa/testing-tools/iperf-2.0.2/iperf -uc 224.4.4.4 -i 1 -b 100M -t
400 -l 100

We are looking for the max PPT rate (100 byte packets size) without
losses, by changing the BW parameter and looking at the point where we
get no losses reported. The best results we received were around 50k
PPS. I remember that we got some 120k-140k packets of the same size
running without losses.

We are going to look into it and try to see where is the time spent,
but any ideas are welcome.

Best regards,
Moni