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- .\" $Id$
- .TH LAT_HTTP 8 "$Date$" "(c)1994 Larry McVoy" "LMBENCH"
- .SH NAME
- lat_http \- measure HTTP latencies
- .SH SYNOPSIS
- .B lat_http
- .I -s
- .sp .5
- .B lat_tcp
- .I hostname
- .sp .5
- .B lat_tcp
- .I -hostname
- .SH DESCRIPTION
- .B lat_http
- implements a
- .I very
- simple HTTP server and uses this simple server to measure
- HTTP version 1.0 transactional latency.
- .PP
- .B lat_http
- has three forms of usage: as a server (lat_http -s),
- as a client (lat_http localhost), and
- as a shutdown (lat_http -localhost).
- .PP
- .B lat_http
- is not meant to be used to measure HTTP server performance,
- but was intended to provide some insight into the potential
- performance for HTTP version 1.0 servers.
- HTTP version 1.0 is very inefficient with respect to system
- and networking resources, since it creates a new TCP connection
- for each file request.
- .SH OUTPUT
- .B lat_http
- reports the average file size, the total number of bytes
- transferred, the total time to transfer the data, and
- the average bandwidth, i.e.:
- .sp
- .ft CB
- Avg xfer: 3.2KB, 41.8KB in 14.4990 millisecs, 2.88 MB/sec
- .ft
- .SH ACKNOWLEDGEMENT
- Funding for the development of
- this tool was provided by Sun Microsystems Computer Corporation.
- .SH "SEE ALSO"
- lmbench(8), read(2), write(2), socket(2), bind(2), connect(2).
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