IBM Support

PI88850: HIGH CPU ISSUES FROM ORG/APACHE/MYFACES/

Fixes are available

8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
17.0.0.4: WebSphere Application Server Liberty 17.0.0.4
18.0.0.1: WebSphere Application Server Liberty 18.0.0.1
18.0.0.2: WebSphere Application Server Liberty 18.0.0.2
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
18.0.0.3: WebSphere Application Server Liberty 18.0.0.3
18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
19.0.0.6: WebSphere Application Server Liberty 19.0.0.6
19.0.0.7: WebSphere Application Server Liberty 19.0.0.7
19.0.0.8: WebSphere Application Server Liberty 19.0.0.8
19.0.0.9: WebSphere Application Server Liberty 19.0.0.9
19.0.0.10: WebSphere Application Server Liberty 19.0.0.10
19.0.0.11: WebSphere Application Server Liberty 19.0.0.11
19.0.0.12: WebSphere Application Server Liberty 19.0.0.12
20.0.0.1: WebSphere Application Server Liberty 20.0.0.1
20.0.0.2: WebSphere Application Server Liberty 20.0.0.2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
20.0.0.3: WebSphere Application Server Liberty 20.0.0.3
20.0.0.4: WebSphere Application Server Liberty 20.0.0.4
20.0.0.5: WebSphere Application Server Liberty 20.0.0.5
20.0.0.6: WebSphere Application Server Liberty 20.0.0.6
20.0.0.7: WebSphere Application Server Liberty 20.0.0.7
20.0.0.8: WebSphere Application Server Liberty 20.0.0.8
20.0.0.9: WebSphere Application Server Liberty 20.0.0.9
20.0.0.10: WebSphere Application Server Liberty 20.0.0.10
20.0.0.11: WebSphere Application Server Liberty 20.0.0.11
20.0.0.12: WebSphere Application Server Liberty 20.0.0.12

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APAR status

  • Closed as program error.

Error description

  • High CPU issues from org/apache/myfaces/
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server            *
    *                  Traditional                                 *
    *                  Profile versions 8.0, 8.5.5 and Liberty     *
    *                  Profile users of JavaServer Faces (JSF)     *
    *                  MyFaces 2.0                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: A high CPU issue in MyFaces 2.0 can be  *
    *                      caused by a concurrency issue           *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    With a highly concurrent workload, WebContainer threads might
    hang
    when they are trying to access the
    DefaultFaceletFactory and AbstractThreadSafeAttributeMap
    classes,
    causing high CPU usage.
    The following stacks are related to this performance issue:
    org/apache/myfaces/view/facelets/impl/DefaultFaceletFactory.need
    sT
    oBeRefreshed(DefaultFaceletFactory.java:247(Compiled
    Code))
    at
    org/apache/myfaces/view/facelets/impl/DefaultFaceletFactory.getF
    ac
    elet(DefaultFaceletFactory.java:160(Compiled Code))
    at
    org/apache/myfaces/view/facelets/impl/DefaultFacelet.include(Def
    au
    ltFacelet.java:395(Compiled Code))
    java/util/Collections$SynchronizedMap.get(Collections.java:2049(
    Co
    mpiled Code))
    at
    com/ibm/ws/webcontainer/webapp/WebApp.getAttribute(WebApp.java:2
    75
    4(Compiled Code))
    at
    com/ibm/wsspi/webcontainer/facade/ServletContextFacade.getAttrib
    ut
    e(ServletContextFacade.java:280(Compiled Code))
    at
    org/apache/myfaces/context/servlet/ApplicationMap.getAttribute(A
    pp
    licationMap.java:47(Compiled Code))
    at
    org/apache/myfaces/util/AbstractThreadSafeAttributeMap.get(Abstr
    ac
    tThreadSafeAttributeMap.java:90(Compiled Code))
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PI88850

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-10-13

  • Closed date

    2017-12-04

  • Last modified date

    2017-12-04

  • 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

  • R800 PSY

       UP

  • R850 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
19 October 2021