A short summary of various aspect about performance - http://codeperformance.com/index.php/2005/07/07/javaone-talk-on-performance-myths/

Any other discussion - http://www-128.ibm.com/developerworks/java/library/j-jtp09275.html

Paper to show some prevalent methodologies can be misleading, and can even lead to incorrect conclusions. - http://buytaert.net/statistically-rigorous-java-performance-evaluation

Discussion about various issue on microbenchmark, try to do premature optimzation - http://www.javacodegeeks.com/2011/02/performance-anxiety-on-performance.html

Java vs C performance... again... http://blogs.azulsystems.com/cliff/2009/09/java-vs-c-performance-again.html

http://blog.jooq.org/2015/02/05/top-10-easy-performance-optimisations-in-java/