Samuel Learning

General

• javaworld
• javaperformancetuning
• Eclipse performance bloopers
• precisejava
• Overview page on Performance at Oracle
• Java Tuning Whitepaper - good introduction to the special issues in benchmarking HotspotVM applications. Note the section on "Making Decisions from Data": "Beware of Microbenchmarks!", "Use Statistics".
• Book by Sun on Java performance tuning - all available online, not sure how old it is
• Detailed and interesting article from IBM Developerworks 2008

JBoss

• JBoss Tuning Sliming
• JBoss optimization
• interesting thread on JBoss ng