JDK-6694351 : G1: add concurrent marking verboseness when -verbosegc or -XX:+PrintGCDetails are set
  • Type: Bug
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs14
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2008-04-25
  • Updated: 2013-09-18
  • Resolved: 2009-02-13
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JDK 6 JDK 7 Other
6u14Fixed 7Fixed hs14Fixed
G1 currently does generate and GC output on the phases of concurrent marking when -verbosegc or -XX:+PrintGCDetails are set.

SUGGESTED FIX When -verbosegc or -XX:+PrintGCDetails are set, G1 will also report the phases of concurrent marking. *** (#1 of 1): [ UNSAVED ] ###@###.###

EVALUATION It is useful to have verboseness information on what the concurrent marking phase is doing to be able to spot issues and abnormalities when they occur.