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Qpid has a substantial server performance test suite based around the http://sourceforge.net/projects/junit-toolkit/ library.

The test cases fall into the following categories:

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Parameter	Meaning
-c pattern	The number of tests to run concurrently.
-r num	The number of times to repeat each test.
-d duration	The length of time to run the tests for.
-t name	The name of the test case to execute.
-s pattern	The size parameter to run tests with.
-o dir	The name of the directory to output test timings to.
--csv	Output test results in CSV format.
--xml	Output test results in XML format.
-v	Verbose mode.

Here are some examples:

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-r 10	Runs each test ten times.
-d 10H	Runs the test repeatedly for 10 hours.
-d 1M, -r 10	Runs the test repeatedly for 1 minute but only takes a timing sample every 10 test runs.
-r 10, -c 5:10:50, -s 1000:10000	Runs 12 test cycles (4 concurrency samples * 3 size sample), with 10 repeats each. In total the test will be run 199 times (3 + 15 + 30 + 150)

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