You can benchmark reliably by warming up the JVM and disabling garbage collection. https://www.ibm.com/developerworks/java/library/j-benchmark1/index.html http

You can benchmark reliably by warming up the JVM and disabling garbage collection. https://www.ibm.com/developerworks/java/library/j-benchmark1/index.html https://www.ibm.com/developerworks/java/library/j-benchmark1... https://www.ibm.com/developerworks/library/j-benchmark2/index.html https://www.ibm.com/developerworks/library/j-benchmark2/inde... http://www.ellipticgroup.com/html/benchmarkingArticle.html http://www.ellipticgroup.com/html/benchmarkingArticle.html Java now ships with microbenchmarking helpers: http://openjdk.java.net/projects/code-tools/jmh/ http://openjdk.java.net/projects/code-tools/jmh/