2013/8/30 Gandalf Corvotempesta <[email protected]>:
> By the way, moving the HBA on the second slot, brought me to 12Gbps on
> both hosts.

This is great:

$ sudo LD_PRELOAD=/usr/local/lib/rsocket/librspreload.so iperf -c 172.17.0.2
------------------------------------------------------------
Client connecting to 172.17.0.2, TCP port 5001
TCP window size:  128 KByte (default)
------------------------------------------------------------
[  3] local 172.17.0.1 port 34108 connected with 172.17.0.2 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  12.2 GBytes  10.5 Gbits/sec
$ sudo LD_PRELOAD=/usr/local/lib/rsocket/librspreload.so iperf -c
172.17.0.2 -P 2
------------------------------------------------------------
Client connecting to 172.17.0.2, TCP port 5001
TCP window size:  128 KByte (default)
------------------------------------------------------------
[  4] local 172.17.0.1 port 55323 connected with 172.17.0.2 port 5001
[  3] local 172.17.0.1 port 36579 connected with 172.17.0.2 port 5001
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  7.46 GBytes  6.41 Gbits/sec
[  3]  0.0-10.0 sec  7.46 GBytes  6.41 Gbits/sec
[SUM]  0.0-10.0 sec  14.9 GBytes  12.8 Gbits/sec


with 2 parallel connection i'm able to reach "rate" speed with iperf,
the same speed archived with rstream.
Is iperf affected by IPoIB MTU size when used with librspreload.so ?
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