perftence
A fluent language to write perftences
...Runtime test statistics are also provided through logging (e.g. using slf4j-log4j and log4j).
Pertence tool can also be used for finding out threading issues. Just write a test that uses the component you need to test for threading issues and assign load of threads to the test.
Thanks to my employer (Nokia) for letting me publish the initial version of this tool as open-source!