Tsung

What Tsung is

Tsung is a free distributed load testing tool for IP-based client/server applications. It can simulate thousands of users on one CPU and spread testing across a cluster of client machines. Supported protocols include HTTP, WebDAV, SOAP, PostgreSQL, MySQL, AMQP, MQTT, LDAP, and Jabber/XMPP. Users configure scenarios in XML, with support for dynamic data, loops, and multiple user behaviors. A recorder can create scenarios through a browser for HTTP and PostgreSQL. During benchmarks, reports cover response and connection times, requests per second, errors, and target server metrics; graphs can be viewed as the benchmark runs. Monitoring can track CPU, memory, and network traffic through Erlang agents or SNMP, with Munin support for remote servers. Tsung supports SSL and is distributed under GNU General Public License version 2. Its documented dependency is Erlang/OTP R16B03 or later, and distributed runs require passwordless SSH access or rsh. The MySQL, WebSocket, AMQP, and MQTT plugins are marked experimental; the documented MySQL plugin works with MySQL 4.1 and higher. Tsung is listed for Linux, macOS, self-hosted use, and Windows.