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lat_connect - measure interprocess connection latency via TCP/IP
lat_connect
-s
lat_connect [ -P <parallelism> ] [ -W <warmups> ] [ -N <repetitions> ] hostname
lat_connect -S hostname
lat_connect is a client/server program
that measures interprocess connection latencies. The benchmark times the
creation and connection of an AF_INET (aka TCP/IP) socket to a remote server.
Care is take that the connection time does not include any other overhead,
such as the gethostbyname() or remote port lookups since these add more
overhead than the connection establishment itself.
lat_connect has three
forms of usage: as a server (-s), as a client (lat_connect localhost), and
as a shutdown (lat_connect -S localhost).
The reported time is in microseconds
per connection. Output format is like so
TCP/IP connection cost to localhost:
1006 microseconds
lmbench(8)
.
Carl Staelin and Larry McVoy
Comments, suggestions, and bug reports are always welcome.
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