When using the Java low pause Concurrent Mark Sweep (CMS) garbage collector "concurrent mode interrupted" appears in GC logs

Solution Verified - Updated -

Issue

The garbage collection logs shows the following:

85030.389: [Full GC 85030.390: [CMS2012-06-20T12:29:58.094+0200: 85030.443: [CMS-concurrent-preclean: 0.108/0.139 secs] [Times: user=0.14 sys=0.01, real=0.14 secs]
 (concurrent mode interrupted): 861863K->904027K(1797568K), 42.9053262 secs] 1045947K->904027K(2047232K), [CMS Perm : 252246K->252202K(262144K)], 42.9070278 secs] [Times: user=43.11 sys=0.18, real=42.91 secs]

What does concurrent mode interrupted mean ?
How do I interpret the logs ?

Environment

  • Java JDK 1.6
  • Concurrent Mark Sweep (CMS) Collector

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