What does “GC--” mean in a java garbage collection log?

Question

We\'ve turned on verbose GC logging to keep track of a known memory leak and got the following entries in the log:

...
3607872.687: [GC 471630K->390767K(4         


        

Answer 1

It is not on the Java GC FAQ

http://java.sun.com/docs/hotspot/gc1.4.2/faq.html

Nor is anything like that mentioned in the Java GC examples page

http://java.sun.com/docs/hotspot/gc1.4.2/example.html

I've never seen that before.

Do you have any special Garbage Collector running? What VM are you running? Does it always occur before Full GC? Are you calling System.gc()?