JDK-6819065 : G1: eliminate high serial card table clearing time
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs15
  • Priority: P3
  • Status: Closed
  • Resolution: Won't Fix
  • OS: generic
  • CPU: generic
  • Submitted: 2009-03-18
  • Updated: 2013-09-18
  • Resolved: 2009-11-19
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JDK 6 JDK 7 Other
6u18Fixed 7Fixed hs15Resolved
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Description
We recently tried G1 on a 32GB heap. The serial card table clearing time that takes place at the end of a collection was quite high (around 25ms). It'd be nice to eliminate this high serial time to improve GC times on large heaps.

Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/29e7d79232b9
20-05-2009