| 123456789101112131415161718192021222324252627 |
- .\" $Id$
- .TH LAT_FIFO 8 "$Date$" "(c)1994 Larry McVoy" "LMBENCH"
- .SH NAME
- lat_fifo \- measure named pipe (FIFO) latencies
- .SH SYNOPSIS
- .B lat_fifo
- .SH DESCRIPTION
- .B lat_fifo
- uses two processes communicating through a named pipe to measure
- interprocess communication latencies.
- The benchmark passes a token 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.
- .SH OUTPUT
- 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
- .sp
- .ft CB
- FIFO latency: 491 microseconds
- .ft
- .SH ACKNOWLEDGEMENT
- Funding for the development of
- this tool was provided by Sun Microsystems Computer Corporation.
- .SH "SEE ALSO"
- lmbench(8), mknod(2), read(2), write(2).
|
