ib_write_lat(1)
RDMA write latency test
SYNOPSIS
ib_write_lat [
options
] [
server IP address
]
DESCRIPTION
This program tests the latency of RMDA write transactions.
OPTIONS
- -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
