JDK-7010724 : Red Hat Enterprise Linux box hangs (becomes inaccessible) when ParallelGCThreads in Sun JVM are high
  • Type: Bug
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 6u22
  • Priority: P3
  • Status: Closed
  • Resolution: Not an Issue
  • OS: linux_2.6
  • CPU: x86
  • Submitted: 2011-01-06
  • Updated: 2011-08-10
  • Resolved: 2011-08-10
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Description
Red Hat Enterprise Linux box hangs (becomes inaccessible) when ParallelGCThreads in Sun JVM are higher than # of CPUs within Cpuset. Cpusets were to map individual processes to logical, hierarchical groupings of CPUs and units of memory.

     Java process 1: CPU id 1 to CPU id 7.
          Process 2: CPU id 8 to CPU id 15.
          Process 3: CPU id 16 to CPU id 23.
          Process 4: CPU id 1 to CPU id 23.
          Other 8 processes are using CPU id 1 to CPU id 23.
          Total Number of processes running on the server: 12.
          Changed Parallel GC Threads for all processes to 24.

Comments
EVALUATION If in future it approves be a java bug, file a new bug.
10-08-2011