Changeset: 4c84d351cca9 Author: stefank Date: 2013-08-16 13:22 +0200 URL: http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear() Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages. Reviewed-by: tschatzl, dcubed, brutisso ! src/os/bsd/vm/os_bsd.cpp ! src/os/linux/vm/globals_linux.hpp ! src/os/linux/vm/os_linux.cpp ! src/os/linux/vm/os_linux.hpp ! src/os/solaris/vm/os_solaris.cpp ! src/os/windows/vm/os_windows.cpp ! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp ! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp ! src/share/vm/memory/collectorPolicy.cpp ! src/share/vm/memory/genCollectedHeap.cpp ! src/share/vm/memory/metaspace.cpp ! src/share/vm/memory/universe.cpp ! src/share/vm/memory/universe.hpp ! src/share/vm/prims/jni.cpp ! src/share/vm/runtime/globals.hpp ! src/share/vm/runtime/os.hpp ! src/share/vm/runtime/virtualspace.cpp ! src/share/vm/runtime/virtualspace.hpp ! src/share/vm/services/memTracker.hpp ! src/share/vm/utilities/globalDefinitions.hpp Changeset: 21ffbaa691b5 Author: stefank Date: 2013-08-26 07:01 -0700 URL: http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/21ffbaa691b5 Merge ! src/share/vm/prims/jni.cpp
