JDK-6976378 : ParNew: stats are printed unconditionally in debug builds
  • Type: Bug
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs19
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2010-08-11
  • Updated: 2011-03-08
  • Resolved: 2011-03-08
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JDK 6 JDK 7 Other
6u21pFixed 7Fixed hs19Fixed
Related Reports
Relates :  
JDK-6970376 - ParNew: shared TaskQueue statistics
Description
The changes for 6970376 left the statictics printing enabled unconditionally in debug builds.  The extra output caused a nightly test to fail:

nsk/coverage/instanceklass/instanceklass002
Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/2d6b74c9a797
11-08-2010
SUGGESTED FIX diff --git a/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp b/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp --- a/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp +++ b/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp @@ -970,8 +970,10 @@ gch->print_heap_change(gch_prev_used); } - TASKQUEUE_STATS_ONLY(thread_state_set.print_termination_stats()); - TASKQUEUE_STATS_ONLY(thread_state_set.print_taskqueue_stats()); + if (PrintGCDetails && ParallelGCVerbose) { + TASKQUEUE_STATS_ONLY(thread_state_set.print_termination_stats()); + TASKQUEUE_STATS_ONLY(thread_state_set.print_taskqueue_stats()); + } if (UseAdaptiveSizePolicy) { size_policy->minor_collection_end(gch->gc_cause());
11-08-2010
EVALUATION Print the stats only when PrintGCDetails and ParallelGCVerbose are enabled, so it works the same way as the parallel scavenge collector.
11-08-2010