Java Garbage Collection: Best Practices for Sizing and Tuning the Java Heap (Chris Bailey)
http://www-01.ibm.com/support/docview.wss?uid=swg27013824&aid=1 Four GC “Policies”, optimized for different scenarios -Xgcpolicy:optthruput optimized for “batch” type applications -Xgcpolicy:optavgpause optimized for applications withresponsiveness criteria -Xgcpolicy:gencon optimized for highly transactionalworkloads -Xgcpolicy:subpools optimized for large systems with allocationcontention