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SPP provides frequently updated RTT estimates using IP traffic already present in the network. SPP estimates the RTT between two measurement points without requiring precise time synchronisation between each point. SPP accurately estimates the RTT experienced by any application's traffic without needing modifications to the application itself or the routers along the path.

The STREAM benchmark is a simple synthetic benchmark program that measures sustainable memory bandwidth (in MB/s) and the corresponding computation rate for simple vector kernels. Documentation can be found at: http://www.cs.virginia.edu/stream/ref.html

Super Smack is a benchmarking, stress testing, and load generation tool for MySQL (and PostgreSQL). Super Smack was originally written by Sasha Pachev, and then hosted and maintained by Jeremy Zawodny.

TCPBLAST measures the throughput of a TCP connection.

The program thrulay is used to measure the capacity, delay, and other performance metrics of a network by sending a bulk TCP or UDP stream over it. Special features of thrulay include: * For TCP, ability to measure round-trip delay along with throughput * For UDP, ability to measure - one-way delay, with quantiles - packet loss - packet duplication - reordering * For UDP, the ability to send precisely positioned true Poisson streams (microsecond errors in sending times) * Human- and machine-readable output (ready to be fed to gnuplot)

webbench is very simple HTTP benchmarking tool, which can benchmark both WWW and proxy servers. webbench uses fork() for simulating multiple clients and supports benchmarking by HTTP/0.9-HTTP/1.1 requests (without Keep-Alive). This benchmark is not very realistic, but can test if your HTTPD can really handle many clients at once (try to run some CGIs) without taking your machine down. I am using this program for setting maximum number of Apaches. Webbench displays results in pages/min and bytes/sec. Radim Kolar

Tsung is an open-source multi-protocol distributed load testing tool It can be used to stress HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP and Jabber/XMPP servers. Tsung is a free software released under the GPLv2 license. The purpose of Tsung is to simulate users in order to test the scalability and performance of IP based client/server applications. You can use it to do load and stress testing of your servers. Many protocols have been implemented and tested, and it can be easily extended. It can be distributed on several client machines and is able to simulate hundreds of thousands of virtual users concurrently (or even millions if you have enough hardware ...). Tsung is developed in Erlang, an open-source language made by Ericsson for building robust fault-tolerant distributed applications.

TTCP is a benchmarking tool for determining TCP and UDP performance between 2 systems. The program was created at the US Army Ballistics Research Lab (BRL) and is in the public domain. Feel free to distribute this program but please do leave the credit notices in the source and man page intact. How to get TCP performance numbers: receiver sender host1% ttcp -r -s host2% ttcp -t -s host1 -n and -l options change the number and size of the buffers.

The Unix Benchmark Utility "ubench" is an attempt to introduce a single measure of perfomance among computer systems running various flavors of Unix operation system. The current development release tests only CPU(s) and memory. In the future releases there will be tests added for disk and TCP/IP. Ubench is taking advantage of multiple CPUs on an SMP system and the results will reflect that. o Ubench is executing rather senseless mathematical integer and floating-point calculations for 3 mins concurrently using several processes, and the result Ubench CPU benchmark. o Ubench will spawn about 2 concurrent processes for each CPU available on the system. This ensures all available raw CPU horsepower is used. o Ubench is executing rather senseless memory allocation and memory to memory copying operations for another 3 mins concurrently using several processes, and the result Ubench MEM benchmark.

wrk is a modern HTTP benchmarking tool capable of generating significant load when run on a single multi-core CPU. It combines a multithreaded design with scalable event notification systems such as epoll and kqueue.