PK98787: HIGH CPU LOAD

APAR status

• Closed as program error.

Error description

• High CPU while several WebContainer threads in
  DynamicAssembyTreeModelWrapper:
  
  at
  java/util/HashMap.findNonNullKeyEntry(HashMap.java:526(Compiled
  Code))
  at java/util/HashMap.getEntry(HashMap.java(Compiled Code))
  at java/util/HashMap.containsKey(HashMap.java(Compiled Code))
  at java/util/HashSet.contains(HashSet.java(Compiled Code))
  at
  com/ibm/wps/model/te/DynamicAssemblyTreeModelWrapper.getChildren
  
  DynamicAssemblyTreeModelWrapper.java:231(Compiled Code))
  at
  com/ibm/wps/model/navigation/impl/NavigationModelImpl.getChildre
  
  (NavigationModelImpl.java:179(Compiled Code))
  at
  com/ibm/wps/model/wrappers/NavigationModelWrapper.getChildren(Na
  
  igationModelWrapper.java:77(Compiled Code))
  at
  com/ibm/wps/engine/tags/NavigationLoopTag.stack(NavigationLoopTa
  
  .java:331(Compiled Code))
  at
  com/ibm/wps/engine/tags/NavigationLoopTag.doAfterBody(Navigation
  
  oopTag.java:222(Compiled Code))
  at
  com/ibm/_jsp/_Default._jspService(_Default.java:2264(Compiled
  Code))
  

Local fix

Problem summary

• High CPU while several WebContainer threads in
  DynamicAssembyTreeModelWrapper:
  
  at
  java/util/HashMap.findNonNullKeyEntry(HashMap.java:526(Compiled
  Code))
  at java/util/HashMap.getEntry(HashMap.java(Compiled Code))
  at java/util/HashMap.containsKey(HashMap.java(Compiled Code))
  at java/util/HashSet.contains(HashSet.java(Compiled Code))
  at
  com/ibm/wps/model/te/DynamicAssemblyTreeModelWrapper.getChildren
  (DynamicAssemblyTreeModelWrapper.java:231(Compiled Code))
  at
  com/ibm/wps/model/navigation/impl/NavigationModelImpl.getChildre
  n (NavigationModelImpl.java:179(Compiled Code))
  at
  com/ibm/wps/model/wrappers/NavigationModelWrapper.getChildren(Na
  vigationModelWrapper.java:77(Compiled Code))
  at
  com/ibm/wps/engine/tags/NavigationLoopTag.stack(NavigationLoopTa
  g.java:331(Compiled Code))
  at
  com/ibm/wps/engine/tags/NavigationLoopTag.doAfterBody(Navigation
  LoopTag.java:222(Compiled Code))
  at com/ibm/_jsp/_Default._jspService(_Default.java:2264(Compiled
  Code))
  

Problem conclusion

• Synchronized the HashSet.
  
  Manual Steps:
     None
  
  Failing Module(s):
     Engine: Page Assembly
  
  Affected Users:
     All users
  
  Version Information:
      Portal Version(s): 6.1.0.1
       Pre-Requisite(s):
        Co-Requisite(s): ---
  
      Portal Version(s): 6.1.0.2
       Pre-Requisite(s):
        Co-Requisite(s): ---
  
  Platform Specific:
     This fix applies to all platforms.
  
  A fix is available from Fix Central:
  
  http://www.ibm.com/eserver/support/fixes/fixcentral/swgquickorde
  r?apar=PK98787&productid=WebSphere%20Portal&brandid=5
  
  You may need to type or paste the complete address into your Web
  browser.
  

Temporary fix

Comments

APAR Information

• 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

  WEBSPHERE PORTA

• Fixed component ID

  5724E7600

Applicable component levels

• R61A PSY

     UP

• R61B PSY

     UP