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  1. JDK
  2. JDK-8059128

VM hangs because threads fail to synchronize at safepoint

    • Icon: Bug Bug
    • Resolution: Incomplete
    • Icon: P2 P2
    • 9
    • 8u40
    • hotspot
    • None

        M. Makundi from the hotspot-gc-use mailing list (subject "G1gc compaction algorithm") reports a VM hang with 8u40-b02 EA and 8u40-b06 EA on their application after a few hours.

        The problem is that typically one thread is not able to synchronize at the safepoint.

        Internally we managed to reproduce the same problem with 8u40-b02 until after the fix for JDK-8056154.

        The attached stack trace (gstacks.txt) shows that thread 49 seems stuck in compiler related methods; note that in mentioned earlier reproductions this has been a single random java thread that hung.

          1. gc-v8-2014-08-30.log.bz2
            136 kB
          2. gstacks.txt
            143 kB
          3. SPECjbb-Shorter.props
            0.4 kB

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            Uploaded image for project: 'JDK'
            1. JDK
            2. JDK-8059128

            VM hangs because threads fail to synchronize at safepoint

              • Icon: Bug Bug
              • Resolution: Incomplete
              • Icon: P2 P2
              • 9
              • 8u40
              • hotspot
              • None

                  M. Makundi from the hotspot-gc-use mailing list (subject "G1gc compaction algorithm") reports a VM hang with 8u40-b02 EA and 8u40-b06 EA on their application after a few hours.

                  The problem is that typically one thread is not able to synchronize at the safepoint.

                  Internally we managed to reproduce the same problem with 8u40-b02 until after the fix for JDK-8056154.

                  The attached stack trace (gstacks.txt) shows that thread 49 seems stuck in compiler related methods; note that in mentioned earlier reproductions this has been a single random java thread that hung.

                    1. gc-v8-2014-08-30.log.bz2
                      136 kB
                    2. gstacks.txt
                      143 kB
                    3. SPECjbb-Shorter.props
                      0.4 kB

                        kvn Vladimir Kozlov
                        tschatzl Thomas Schatzl
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                          Created:
                          Updated:
                          Resolved:

                            kvn Vladimir Kozlov
                            tschatzl Thomas Schatzl
                            Votes:
                            0 Vote for this issue
                            Watchers:
                            10 Start watching this issue

                              Created:
                              Updated:
                              Resolved: