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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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3
hotspot/src/share/vm/runtime/globals.hpp
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@ -1933,6 +1933,9 @@ class CommandLineFlags {
notproduct(bool, ExecuteInternalVMTests, false, \
"Enable execution of internal VM tests.") \
\
notproduct(bool, VerboseInternalVMTests, false, \
"Turn on logging for internal VM tests.") \
\
product_pd(bool, UseTLAB, "Use thread-local object allocation") \
\
product_pd(bool, ResizeTLAB, \