Pinned topic A healthy discussion on performance testing
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If you haven't read "Performance testing with JUnitPerf" at http://www-128.ibm.com/developerworks/java/library/j-cq11296.html, check it out and then check out Artima for a forum related to this article at http://www.artima.com/forums/flat.jsp?forum=276&thread=186755#242618. There are some good points made regarding performance testing.