IBM Support

IV91347: HANG DUE TO VALUEPROFILINGMUTEX LOCK NOT BEING RELREASED

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APAR status

  • Closed as program error.

Error description

  • Error Message: Application threads are waiting on the
    ValueProfilingMutex lock to be released by a JIT compiler thread
    causing the application to hang. This can be seen in the
    javacore*.txt generated by the JVM's dump agent.
    .
    Stack Trace: N/A
    .
    

Local fix

  • This option may be avoided using the following Java option:
    -Xjit:disableProfiling
    

Problem summary

  • The JIT compiler threads will acquire and release the
    ValueProfilingMutex lock during compilation. The lock is also
    used by application threads as part of application profiling by
    the JIT compiler. It is possible for a compilation to abort due
    to it exceeding thresholds. In some scenarios, the
    ValueProfilingMutex lock was not being released when a
    compilation thread that acquired it aborted the compilation
    causing the lock to be held by that thread indefinitely. If this
    happens, then application threads wanting to acquire that lock
    as part of profiling will endlessly wait to acquire this lock
    causing the application to hang.
    

Problem conclusion

  • The JIT compiler has been updated to release the
    ValueProfilingMutex lock when a compilation is aborted.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR3 FP22  (8.0.3.22)
       7    SR10      (7.0.10.0)
       7 R1 SR4       (7.1.4.0)
       6 R1 SR8 FP40  (6.1.8.40)
       6    SR16 FP40 (6.0.16.40)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV91347

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-12-07

  • Closed date

    2016-12-22

  • Last modified date

    2017-01-05

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R130 PSY

       UP

  • R260 PSY

       UP

  • R600 PSY

       UP



Document information

More support for: Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version: 130

Reference #: IV91347

Modified date: 05 January 2017