ib_write_lat (1)

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] >