Jan Ruffing wrote:
Hallo,
After I installed the OFED (1.4 beta), I noticed a drop in TCP
performance via Infiniband: from 10 GBit/s to less than 8 GBit/s.
Is that "expected behaviour"? Is there a way to avoid this performance loss?
The HCA used in both test machines is a Mellanox Infinihost III Lx DDR
HCA. Both machines run OpenSuse 11 with a 2.6.25.16 Kernel.
Is it SDP or IPoIB?
What is the FW version you use?
Performance with Open Suse 11 "out of the box", using Open Suse 11
Infiniband packages:
tamara iperf-2.0.4/src> ./iperf -c 192.168.2.2 -l 3M
------------------------------------------------------------
Client connecting to 192.168.2.2, TCP port 5001
TCP window size: 515 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.2.1 port 47730 connected with 192.168.2.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 11.6 GBytes 10.0 Gbits/sec
Performance after the Installation of ODED 1.4. beta:
tamara iperf-2.0.4/src> ./iperf -c 192.168.2.2 -l 3M
------------------------------------------------------------
Client connecting to 192.168.2.2, TCP port 5001
TCP window size: 902 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.2.1 port 38864 connected with 192.168.2.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 8.43 GBytes 7.24 Gbits/sec
Thanks in advance,
Jan
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