ib_read_lat(1)							   User Commands						    ib_read_lat(1)

NAME

       ib_read_lat - RDMA write latency test

SYNOPSIS

       ib_read_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

AUTHOR

       Guy Coates  < gmpc@sanger.ac.uk >

perftest							 February 20, 2008						    ib_read_lat(1)