Changeset: 04f1d5d36714 Author: tschatzl Date: 2014-01-07 13:31 +0100 URL: http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/04f1d5d36714 8027364: PSScavenge accounts too large code section to StringTable unlink Summary: Correct timing measurement by modifying the scope of the GCTraceTime instance. Reviewed-by: ysr, tamao Contributed-by: Jeremy Manson <jeremymanson@google.com> ! src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp Changeset: 5a32d2a3cc1e Author: tschatzl Date: 2014-01-20 11:47 +0100 URL: http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/5a32d2a3cc1e 8027476: Improve performance of Stringtable unlink 8027455: Improve symbol table scan times during gc pauses Summary: Parallelize string table and symbol table scan during remark and full GC. Some additional statistics output if the experimental flag G1TraceStringSymbolTableScrubbing is set. Reviewed-by: mgerdin, coleenp, brutisso ! src/share/vm/classfile/symbolTable.cpp ! src/share/vm/classfile/symbolTable.hpp ! src/share/vm/gc_implementation/g1/concurrentMark.cpp ! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp ! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp ! src/share/vm/gc_implementation/g1/g1MarkSweep.cpp ! src/share/vm/gc_implementation/g1/g1_globals.hpp + test/gc/g1/TestStringSymbolTableStats.java Changeset: cb7ec2423207 Author: tschatzl Date: 2014-01-20 11:47 +0100 URL: http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/cb7ec2423207 8027454: Do not traverse string table during G1 remark when treating them as strong roots during initial mark Summary: Do not try to unlink string table entries unconditionally during remark. This is without side effects as the preceding initial mark always uses the string table as strong roots. Needs to be fixed with class unloading during concurrent mark. Reviewed-by: brutisso, mgerdin ! src/share/vm/gc_implementation/g1/concurrentMark.cpp Changeset: 889068b9a088 Author: tschatzl Date: 2014-01-20 11:47 +0100 URL: http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/889068b9a088 8027746: Remove do_gen_barrier template parameter in G1ParCopyClosure Summary: Remove the above mentioned template parameter and related unused code. Also remove some classes that are never used. Reviewed-by: stefank, mgerdin, jwilhelm ! src/share/vm/gc_implementation/g1/bufferingOopClosure.hpp ! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp ! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp ! src/share/vm/gc_implementation/g1/g1OopClosures.hpp ! src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp