tsung(1) A distributed multi-protocol load testing tool.


tsung [ -f configuration file ] [ -l log dir ] [ -m filename ] [ -r command ] [ -v ] [ -6 ] [ -h ] [ start|stop|debug|status ]


tsung is a distributed load testing tool. It is protocol-independent and can currently be used to stress and benchmark HTTP, WebDAV, LDAP, PostgreSQL, MySQL and Jabber/XMPP servers.

It simulates user behaviour using an XML description file, reports many measurements in real time (statistics can be customized with transactions, and graphics generated using gnuplot).

For HTTP, it supports 1.0 and 1.1, has a proxy mode to record sessions, supports GET and POST methods, Cookies, and Basic WWW-authentication. It also has support for SSL.

Several config examples can be found in /usr/share/doc/tsung/examples/.

start tsung load testing
start tsung with an interactive erlang shell
stop tsung
print current status of a running instance of tsung (must be run on the controller host)


A manual should be available at /usr/share/doc/tsung/user_manual.html. It is also available online at



-f filename
specifies the configuration file to use. The default file name is ~/.tsung/tsung.xml. Use - for standard input
-l logdir
Specifies the log directory to use. The default log dir name is ~/.tsung/log/YYYYMMDD-HHMM/
-m monitoring_file
Specifies the monitoring log file name to use. The default log file name is tsung.log. Use - for standard output
-r command
Specifies an alternative to ssh (rsh for ex.) for starting a slave node on a remote host
-i id
set controller id (default is empty). Needed to start several controllers on the same host.
Use long names for erlang nodes (FQDN)
Enable erlang smp on client nodes
Show version
Use IPv6 for tsung internal communications
Show usage


Please reports bugs to the mailing list <[email protected]>, see


for archives.


Tsung is written by Nicolas Niclausse <[email protected]>. Contributors list is available in /usr/share/doc/tsung/CONTRIBUTORS