Java G1 garbage collection in production

Question

Since Java 7 is going to use the new G1 garbage collection by default is Java going to be able to handle an order of magnitude larger heap without supposed \"devastating\" G

Answer 1

It seems like G1 starting JDK7u4 is finally officially supported, see the RN for JDK7u4 http://www.oracle.com/technetwork/java/javase/7u4-relnotes-1575007.html.

From our testing still for big JVMs tuned CMS still acts better than G1 but I guess it will grow better.