disable mysterious GC

[Yang]

the following source code in jdk , RMI part, forces a full gc every 1
hour , if no old gen gc has happened by then.




    /** maximum interval between complete garbage collections of local heap */
    private static final long gcInterval =              // default 1 hour
        AccessController.doPrivileged(
            new GetLongAction("sun.rmi.dgc.client.gcInterval",
                              3600000)).longValue();



so if u have a large heap, and old gen gc does not happen frequently,
you need to set

#sun.rmi.dgc.client.gcInterval
#sun.rmi.dgc.server.gcInterval

to very high levels