hg: jdk7/hotspot/hotspot: 12 new changesets
jon.masamitsu at oracle.com
jon.masamitsu at oracle.com
Fri Apr 29 16:33:51 PDT 2011
Date: 2011-04-19 15:46 -0400
7011855: G1: non-product flag to artificially grow the heap
Summary: It introduces non-product cmd line parameter G1DummyRegionsPerGC which indicates how many "dummy" regions to allocate at the end of each GC. This allows the G1 heap to grow artificially and makes concurrent marking cycles more frequent irrespective of what the application that is running is doing. The dummy regions will be found totally empty during cleanup so this parameter can also be used to stress the concurrent cleanup operation.
Reviewed-by: brutisso, johnc
Date: 2011-04-20 17:12 -0700
7034464: Support transparent large pages on Linux
Summary: Support transparent huge pages on Linux available since 2.6.38
Reviewed-by: iveresov, ysr
Contributed-by: aph at redhat.com
Date: 2011-04-20 19:19 -0700
7037276: Unnecessary double traversal of dirty card windows
Summary: Short-circuited an unnecessary double traversal of dirty card windows when iterating younger refs. Also renamed some cardtable methods for more clarity.
Reviewed-by: jmasa, stefank, poonam
Date: 2011-04-21 01:16 -0700
Date: 2011-04-21 10:23 -0700
6946417: G1: Java VisualVM does not support G1 properly.
Summary: Added counters for jstat
Reviewed-by: tonyp, jwilhelm, stefank, ysr, johnc
Date: 2011-04-22 09:26 -0700
Date: 2011-04-23 04:20 -0700
7037250: cscope.make database generation is silently broken
Date: 2011-04-26 11:46 -0700
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
Summary: Make the NUMA allocator behave properly with SHM and ISM large pages.
Date: 2011-04-26 21:17 -0700
7039089: G1: changeset for 7037276 broke heap verification, and related cleanups
Summary: In G1 heap verification, we no longer scan perm to G1-collected heap refs as part of process_strong_roots() but rather in a separate explicit oop iteration over the perm gen. This preserves the original perm card-marks. Added a new assertion in younger_refs_iterate() to catch a simple subcase where the user may have forgotten a prior save_marks() call, as happened in the case of G1's attempt to iterate perm to G1 refs when verifying the heap before exit. The assert was deliberately weakened for ParNew+CMS and will be fixed for that combination in a future CR. Also made some (non-G1) cleanups related to code and comments obsoleted by the migration of Symbols to the native heap.
Reviewed-by: iveresov, jmasa, tonyp
Date: 2011-04-27 14:40 -0700
7037756: Deadlock in compiler thread similiar to 6789220
Summary: Avoid blocking in CompileBroker::compile_method_base() if the current thread holds the pending list lock.
Reviewed-by: never, brutisso, ysr
Date: 2011-04-29 12:33 -0700
Date: 2011-04-29 14:36 -0700
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