JDK-6824570 : ParNew: Fix memory leak introduced in 6819891
  • Type: Bug
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs14
  • Priority: P1
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2009-03-31
  • Updated: 2011-03-07
  • Resolved: 2011-03-07
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JDK 6 JDK 7 Other
6u14Fixed 7Fixed hs14Fixed
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Relates :  
Description
The fix for 6819891 inadvertently introduced a memory leak, in
the C-heap, of the order of 2KB*ParallelGCThreads per scavenge.
Over a period of time such a leak can run the JVM out of C-heap
memory and lead to availability issues in the field.

This bug should be fixed in hs14 where it was first introduced.
The bug affects the 64-bit compressed oops jvm using the ParNew
(or CMS) collector.

Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/becb17ad5e51
04-04-2009

EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/becb17ad5e51
03-04-2009

EVALUATION <ouch!>
31-03-2009

SUGGESTED FIX The following fix (based on an hs15 jvm) is under test and will be available for review:- file:///net/neeraja/export/ysr/coops/webrev/index.html
31-03-2009

WORK AROUND -XX:-UseParNewGC or -XX:-UseCompressedOops
31-03-2009