Java performance tips

Question

I have a program I ported from C to Java. Both apps use quicksort to order some partitioned data (genomic coordinates).

The Java version runs fast, but I\'d like to get

Answer 1

jvisualvm ships with JDK 6 now - that's the reason the link cited above doesn't work. Just type "jvisualvm ", where is the ID of the process you want to track. You'll get to see how the heap is being used, but you won't see what's filling it up.

If it's a long-running process, you can turn on the -server option when you run. There are a lot of tuning options available to you; that's just one.