Tag Archives: Hotspot

Garbage Collection Tuning

August 23, 2010 – 1:59 pm

I recently stumbled across a useful presentation: “GC Tuning In the HotSpot JVM” from FISL 10, which provides a good overview of how to tune the ParNew, Paralell and CMS collectors… Also quite useful is this blog entry which explains how to understand CMS GC logs.

By James Furness | Posted in Java | Also tagged , , , | Comments Off on Garbage Collection Tuning

Performance techniques used in the Hotspot JVM

July 27, 2010 – 10:26 am

Little gem from the Hotspot Internals wiki helping to solve puzzles such as is “X.class.isAssignableFrom(obj)” slower than “obj instanceof X“! Performance techniques used in the Hotspot JVM.

By James Furness | Posted in Java | Also tagged , , , | Comments Off on Performance techniques used in the Hotspot JVM