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8007074: SIGSEGV at ParMarkBitMap::verify_clear()

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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
This commit is contained in:
Stefan Karlsson 2013-08-16 13:22:32 +02:00
parent 6a548048a3
commit 7ade7987a0
20 changed files with 796 additions and 159 deletions
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9
hotspot/src/share/vm/services/memTracker.hpp
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@ -87,6 +87,8 @@ class MemTracker : AllStatic {
MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { }
static inline void record_virtual_memory_commit(address addr, size_t size,
address pc = 0, Thread* thread = NULL) { }
static inline void record_virtual_memory_release(address addr, size_t size,
Thread* thread = NULL) { }
static inline void record_virtual_memory_type(address base, MEMFLAGS flags,
Thread* thread = NULL) { }
static inline Tracker get_realloc_tracker() { return _tkr; }
@ -372,6 +374,13 @@ class MemTracker : AllStatic {
tkr.record(addr, size, flags, pc);
}
static inline void record_virtual_memory_release(address addr, size_t size,
Thread* thread = NULL) {
if (is_on()) {
Tracker tkr(Tracker::Release, thread);
tkr.record(addr, size);
}
}
// record memory type on virtual memory base address
static inline void record_virtual_memory_type(address base, MEMFLAGS flags,