Performance Documentation for the Java HotSpot VM

Performance Tuning
#1

I often have a difficult time finding pages like this one ont he JavaSoft site, so I am posting this link for those that may not have seen it.

http://java.sun.com/docs/hotspot/index.html

Great topics such as:

Performance FAQ

Java HotSpot VM Options

Tuning Garbage Collection with 1.4.2

BTW, does anyone know a parent link to this page, meaning, what would be the regular navigation path to find this? It seem buried to me (although the URL seems logically enough)

#2

Does anyone else have a hard time understanding that first graph on http://java.sun.com/docs/hotspot/gc1.4.2/index.html ?

My favourite line is “The X axis is object lifetimes measured in bytes allocated.” Since when is “bytes allocated” a unit of time???