Community
Participate
Working Groups
Hi, I got a AMD 2400+ System with 2 GB RAM. I pimped up my eclipse.ini to use -Xms256m -Xmx1024m but when I'm running eclipse and listening to music from itunes, everytime the Garbage Collector gets called, my music stucks.. This has not been the case using 3.1, so I guess something changed, but I don't know what. I even tried lowering the Process priorities from Eclipse&JVM to below normal, and the iTunes one to above normal, but that doesn't help. My JVM version is 1.5.0_b05 I tried all of the following GCs: -XX:+UseSerialGC -XX:+UseConcMarkSweepGC -Xincgc -XX:UseParallelGC -XX:+UseParNewGC (I know some of them obviously make no sense on a 1GB 1CPU mashine.. Just for completlyness) using -server didn't help either
Eclipse does not have any GC policy nor does it trigger the GC (or at least it should be pretty rare). I think that you should see the same problem with any other application and similar settings. My bets are that the heap is so huge that a GC takes a long time and requires so much CPU that it alters other processes. You should try with another VM.
See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5101898 Apparently fixed in 1.5.0_06 I suspect -Xmx1024M is overkill, since the cost of a full gc will be proportional to allocated heap size. You may actually get better performance with a *lower* max heap.
