JDK-6962589 : remove breadth first scanning code from parallel gc
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs19
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2010-06-19
  • Updated: 2011-04-23
  • Resolved: 2011-04-23
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JDK 6 JDK 7 Other
6u21pFixed 7Fixed hs19Fixed
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Description
The ParallelGC collector supports scavenging in breadth-first order, but this is disabled by default and there are no known users of it.  The code should be removed.

Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/9d7a8ab3736b
2010-08-05

EVALUATION The default scavenge order is depth first, but the option -XX:-UseDepthFirstScavengeOrder can be used to switch to breadth first. The option would have to be accepted (but ignored) for some time to maintain compatibility.
2010-06-19