On Mon, Apr 11, 2005 at 12:00:14PM -0700, Libor Michalek wrote: > > 2. Also, is there a program you use to measure SDP latency ? > > I've used netperf in the past which has a roundtrip test to > measure latency using the regular sockets API. I don't have an > AIO latency test handy at the moment, but I could fix one up > and place it in the examples directory...
netperf -t TCP_RR is really easy to run. I suggest the 2.4.0-rc1 version *experimental* version from www.netperf.org. 2.4.0-rc1 is much more linux friendly than previous versions. Just do "make config && make install" You *must* use "-T" option (bind apps to the CPU handling interrupts) for performance characterization. I've run this alot for gige but not ran a full set for ia64/IB. Output sample for IPoIB on HP/ZX1 ia64 (rx2600) below. I expect SDP to be a bit better and would like to generate full sets for both IPoIB and SDP this week. ISTR netpipe also has latency tests but I've not played with netpipe yet. grant # /usr/local/bin/netperf -c -C -l 60 -H 10.0.0.30 -t TCP_RR -T 0,0 TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.30 (10.0.0.30) port 0 AF_INET Local /Remote Socket Size Request Resp. Elapsed Trans. CPU CPU S.dem S.dem Send Recv Size Size Time Rate local remote local remote bytes bytes bytes bytes secs. per sec % S % S us/Tr us/Tr 16384 87380 1 1 60.00 16313.15 5.85 5.98 7.174 7.326 16384 87380 _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
