There are times when memory profiling will provide a clearer picture than execution profiling to find execution hot spots. In this article Kirk Pepperdine talks through some indicators for determining when to use which kind of profiler.
Many articles describe how a poorly tuned garbage collector can bring an application's SLA commitments to its knees. Oracle's new G1 Collector in HotSpot moves away from the conventional GC model, where a Java heap splits into (contiguous) young and old generations, and instead introduces the concept of “regions”, for a generally more performant and manageable GC.
In the world of application delivery, performance tuning still eludes the mainstream. InfoQ spoke to 5 luminaries of the performance monitoring space about it. The result was quite an active debate.
Michael Slinn examines how to benchmark JVM concurrency options for JVM-based langauges including Java and Scala. 2
The book "Solving Enterprise Applications Performance Puzzles" by Leonid Grinshpan explains how to boost the performance of enterprise applications. 3
Java Performance, by Charlie Hunt and Binu John, provides performance tuning advice for both Java SE and EE applications. InfoQ reviews the book, and talks to the authors about their approach.
Joachim walks you step by step through using open source tools like JMap, VisualVM, BTrace, and EurekaJ to effectively diagnose performance and memory problems in your Java apps. 9
InfoQ examines how Azul's collector works, and explores some techniques you can use to test the impact of garbage collection in your applications.