PM02292: PMI FOR THREAD POOL RETURNS WRONG VALUES, PERCENTMAXED ALWAYS RETURNS 100% EVEN IF NO CLIENTS ACCESS AND ACTIVECOUNT AS 2

Fixes are available

7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for IBM i
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for Windows
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for HP-UX
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for AIX
7.0.0.11: Java SDK 1.6 SR7 Cumulative Fix for WebSphere Application Server
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for Solaris
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for Linux
6.1.0.33: WebSphere Application Server V6.1 Fix Pack 33 for AIX
6.1.0.33: WebSphere Application Server V6.1 Fix Pack 33 for HP-UX
6.1.0.31: WebSphere Application Server V6.1 Fix Pack 31 for AIX
6.1.0.31: WebSphere Application Server V6.1 Fix Pack 31 for HP-UX
6.1.0.31: Java SDK 1.5 SR11 Cumulative Fix for WebSphere Application Server
6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for AIX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for HP-UX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for IBM i
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Linux
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Solaris
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Windows
7.0.0.13: Java SDK 1.6 SR8FP1 Cumulative Fix for WebSphere Application Server
6.1.0.35: WebSphere Application Server V6.1 Fix Pack 35 for AIX
6.1.0.35: WebSphere Application Server V6.1 Fix Pack 35 for HP-UX
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for AIX
7.0.0.15: Java SDK 1.6 SR9 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for HP-UX
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for IBM i
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Linux
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Solaris
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Windows
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
7.0.0.17: WebSphere Application Server V7.0 Fix Pack 17
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
6.1.0.37: WebSphere Application Server V6.1 Fix Pack 37
6.1.0.39: WebSphere Application Server V6.1 Fix Pack 39
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: WebSphere Application Server V6.1 Fix Pack 41
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: WebSphere Application Server V6.1 Fix Pack 43
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: WebSphere Application Server V6.1 Fix Pack 45
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Thread pool counters for Performance Monitoring Infrastructure
    (PMI), for expample  PercentMaxed of WebContainer returns 100%
    even if no clients access, and ActiveCount shows 2.
    
    javacore shows at the problem, only "WebContainer : 3"
    was runnable status and rest of the threads are waiting for work
    
    "WebContainer : 0" (TID:0x000000011BC83400,
    sys_thread_t:0x000000011B160D90, state:CW, native
    ID:0x000000000030E08B) prio=5
    at java/lang/Object.wait(Native Method)
    at java/lang/Object.wait(Object.java:231(Compiled Code))
    at
    com/ibm/io/async/ResultHandler.runEventProcessingLoop(ResultHand
    ler.ja
    va:399)
    .
    .
    
    "WebContainer : 1" (TID:0x000000011BE4E600,
    sys_thread_t:0x000000011B161270, state:CW, native
    ID:0x000000000013D021) prio=5
    at java/lang/Object.wait(Native Method)
    at java/lang/Object.wait(Object.java:231(Compiled Code))
    at
    com/ibm/ws/util/BoundedBuffer.waitGet_(BoundedBuffer.java:188(Co
    mpiled
    Code))
    .
    
    "WebContainer : 2" (TID:0x000000011BE5D700,
    sys_thread_t:0x000000011BE58E50, state:CW, native
    ID:0x000000000010F03F) prio=5
    at java/lang/Object.wait(Native Method)
    at java/lang/Object.wait(Object.java:231(Compiled Code))
    at
    com/ibm/ws/util/BoundedBuffer.waitGet_(BoundedBuffer.java:188(Co
    mpiled
    Code))
    .
    
    "WebContainer : 3" (TID:0x000000011C6AD400,
    sys_thread_t:0x000000011C82E550, state:R, native
    ID:0x00000000003ED091
    prio=5
    at com/ibm/io/async/AsyncLibrary.aio_getioev2(Native Method)
    at
    com/ibm/io/async/AsyncLibrary.getCompletionData2(AsyncLibrary.ja
    va:575
    (Compiled Code))
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V6.1 and V7.0 using Performance      *
    *                  Monitoring Infrastructure(PMI)              *
    ****************************************************************
    * PROBLEM DESCRIPTION: PMI ThreadPool counter, PercentMaxed    *
    *                      always returns 100% in a multi          *
    *                      threaded environment.                   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When more than one thread is returned concurrently in a multi
    threaded environment,the Percent Maxed value is not reset and
    will continue to show 100% in PMI.
    

Problem conclusion

  • This issue is resolved by changing the code to handle the
    concurrent thread returns.
    The fix for this APAR is currently targeted for inclusion in
    fix packs 7.0.0.11 and 6.1.0.31.  Please refer to the
    Recommended Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM02292

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    61A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-11-30

  • Closed date

    2010-01-04

  • Last modified date

    2010-04-09

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R61A PSY

       UP

  • R61H PSY

       UP

  • R61I PSY

       UP

  • R61P PSY

       UP

  • R61S PSY

       UP

  • R61W PSY

       UP

  • R61Z PSY

       UP

  • R700 PSY

       UP



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Document information


More support for:

WebSphere Application Server
General

Software version:

6.1

Reference #:

PM02292

Modified date:

2010-04-09

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