Changeset: cba2cb15dc55 Author: amurillo Date: 2013-10-04 06:30 -0700 URL: http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/cba2cb15dc55
8025860: new hotspot build - hs24.60-b02 Reviewed-by: jcoomes ! make/hotspot_version Changeset: a453e8756d6f Author: stefank Date: 2013-10-15 11:26 +0200 URL: http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/a453e8756d6f 8022507: 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/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp ! src/share/vm/memory/collectorPolicy.cpp ! src/share/vm/memory/genCollectedHeap.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: 4911caf5a68d Author: stefank Date: 2013-10-05 10:14 +0200 URL: http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/4911caf5a68d 8026486: Significant slowdown due to transparent huge pages Summary: Don't turn on transparent huge pages (-XX:+UseTransparentHugePages) unless explicitly specified on the command line. This has the effect that large pages are never turned on Linux unless the user has explicitly enabled any of the large pages flags: -XX:+UseLargePages, -XX:+UseTransparentHugePages, -XX:+UseHugeTLBFS, and -XX:+UseSHM. Reviewed-by: jwilhelm, tschatzl, brutisso ! src/os/linux/vm/globals_linux.hpp ! src/os/linux/vm/os_linux.cpp + test/runtime/memory/LargePages/TestLargePagesFlags.java ! test/testlibrary/OutputAnalyzerTest.java ! test/testlibrary/com/oracle/java/testlibrary/OutputAnalyzer.java Changeset: b7d44793cd26 Author: amurillo Date: 2013-10-23 10:15 -0700 URL: http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/b7d44793cd26 Merge ! make/hotspot_version ! src/os/bsd/vm/os_bsd.cpp Changeset: a03f20e7b0fc Author: amurillo Date: 2013-10-23 10:15 -0700 URL: http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/a03f20e7b0fc Added tag hs24.60-b02 for changeset b7d44793cd26 ! .hgtags
