lat_udp - measure interprocess communication latency via UDP/IP

       Funding for the development of this tool was provided by Sun Microsystems Computer Corporation.

       Carl Staelin and Larry McVoy

       Comments, suggestions, and bug reports are always welcome.

(c)1994 Larry McVoy                                  $Date$                                           LAT_UDP(8)

lat_udp  is  a  client/server  program that measures interprocess communication latencies.  The benchmark
       passes a message back and forth between the two processes (this sort of benchmark is frequently  referred
       to as a ``hot potato'' benchmark).  No other work is done in the processes.

       lat_udp  has  three  forms of usage: as a server (-s), as a client (lat_udp localhost), and as a shutdown
       (lat_udp -S localhost).

       lat_udp - measure interprocess communication latency via UDP/IP

       The reported time is in microseconds per round trip and  includes  the  total  time,  i.e.,  the  context
       switching overhead is included.  Output format is like so

       UDPlatencyusinglocalhost:650microseconds

lmbench(8), lat_fcntl(8), lat_fifo(8), lat_tcp(8), lat_unix(8).

lat_udp-slat_udp [ -m<messagesize> ] [ -P<parallelism> ] [ -W<warmups> ] [ -N<repetitions> ] hostnamelat_udp-Shostname