Provided by: lmbench-doc_3.0-a9-1.1_all
lat_udp - measure interprocess communication latency via UDP/IP
lat_udp -s lat_udp [ -m <message size> ] [ -P <parallelism> ] [ -W <warmups> ] [ -N <repetitions> ] hostname lat_udp -S hostname
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).
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 UDP latency using localhost: 650 microseconds
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)