ib_write_lat(1) RDMA write latency test


ib_write_lat [ options ] [ server IP address ]


This program tests the latency of RMDA write transactions.


-p, --port=<port>
listen on/connect to port <port> (default: 18515)
-m, --mtu=<mtu>
mtu size (default: 1024)
-d, --ib-dev=<dev>
use IB device <dev> (default: first device found)
-i, --ib-port=<port>
use port <port> of IB device (default: 1)
-s, --size=<size>
size of message to exchange (default: 1)
-a, --all
run sizes from 2 till 2^23
-t, --tx-depth=<dep>
size of tx queue (default: 50)
-n, --iters=<iters>
number of exchanges (at least 100, default: 1000)
-C, --report-cycles
report times in cpu cycle units (default: microseconds)
-H, --report-histogram
print out all results (default: print summary only)
-U, --report-unsorted
(implies -H) print out unsorted results (default: sorted)
-V, --version
display version number


Guy Coates < [email protected] >