hg: jdk9/hs/hotspot: 8165313: Inserting freed regions during Free Collection Set serial phase takes very long on huge heaps

[thomas.schatzl at oracle.com]

Changeset: 7648527b38b8
Author:    tschatzl
Date:      2016-09-12 09:34 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/7648527b38b8

8165313: Inserting freed regions during Free Collection Set serial phase takes very long on huge heaps
Summary: Sort the collection set in ascending order so that the optimization when adding free regions can be exploited.
Reviewed-by: sjohanss, mgerdin

! src/share/vm/gc/g1/g1CollectionSet.cpp