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  1. JDK
  2. JDK-6982951

heapdump/JMapHeap and heapdump/JMapPerm hang on WinXP with JDK7-B108

    Details

    • Subcomponent:
    • Introduced In Build:
      b108
    • Introduced In Version:
      7
    • CPU:
      x86
    • OS:
      windows_xp

      Description

      During my baseline testing on JDK7-B108, the following two tests
      hung in all eight of my WinXP configurations:

          heapdump/JMapHeap
          heapdump/JMapPerm

      The automated Tonga test timeout logic didn't handle these hangs and
      it is not clear if Tonga even realized that the test run was hung.

      My machine is a MacBook Pro:

        Model Name: MacBook Pro
        Model Identifier: MacBookPro5,2
        Processor Name: Intel Core 2 Duo
        Processor Speed: 2.8 GHz
        Number Of Processors: 1
        Total Number Of Cores: 2
        L2 Cache: 6 MB
        Memory: 4 GB
        Bus Speed: 1.07 GHz
        Boot ROM Version: MBP52.008E.B05
        SMC Version (system): 1.42f4
        Serial Number (system): W80040AF8YB
        Hardware UUID: AABAF561-9DCC-5311-868C-518EB18115E1
        Sudden Motion Sensor:
        State: Enabled

      I'm running VMware Fusion 3.X and I have WinXP VMware client:

          Windows XP Professional, SP3
          two virtual processors enabled
          2GB of RAM enabled

      I'm running the following version of Cygwin:

      $ uname -a
      CYGWIN_NT-5.1 oliver-lt 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

      I updated my Cygwin packages on 2010.03.31.

      In one of my configurations, the test run was hung for 12+ hours over
      the holiday weekend before I noticed the hang.

      In my analysis of subsequent reproductions of the hang, there is a
      jmap process that does not show up via Cygwin ps, but it does show
      up in the Windows Task Manager. When this jmap process is killed,
      the test finishes with a PASS.

      This bug does not reproduce with JDK7-B107 bits.

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            • Assignee:
              dcubed Daniel Daugherty
              Reporter:
              dcubed Daniel Daugherty
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              • Created:
                Updated:
                Resolved:
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