Tperf Home Page

What's New

Tperf version 1.5 now supports UDP multicasting. In UDP multicast mode, each sender process sends datagrams to multiple hosts in specified order. On receiver side, each receiver process automatically multiplexes UDP streams from multiple processes.

About Tperf

Tperf is a very simple TCP/UDP bandwidth measurement tool written in standard C and UNIX socket API. It reports bandwidth on both of sender side and receiver side, UDP datagram loss statistics, etc.


Tperf is free software; you can redistribute and/or modify it under the modified BSD License. The complete text of the license can be found in the COPYING file included in the distribution.

Please download the recent releases of Tperf from the following links.


Please send comments and bug reports to terry [at]

Copyright © 2005-2006 Tomohiro Otsuka, All rights reserved.

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