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IV33530: AIX SPECIFIC - HIGH CPU UTILISATION WHEN NIO SELECTORS ARE USED

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: High CPU utilization on AIX
.
Stack Trace: N/A
.
select method may return zero continuously on AIX when NIO
Selectors are used.  Java may exhibit high CPU usage symptoms

Local fix

  • 



Problem summary


    

  • Due to code error, closed file descriptors are polled

    



Problem conclusion


    

  • This defect will be fixed in:
6.0.0 SR13
6.0.1 SR5
7.0.0 SR4
.
AIX NIO Selector code is updated to take care of this situation.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV33530
    • 

  • Reported component name
    JAVA CLASS LIBS
    • 

  • Reported component ID
    620700130
    • 

  • Reported release
    600
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2012-12-17
    • 

  • Closed date
    2012-12-25
    • 

  • Last modified date
    2013-02-28
    • 





    

  • 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
    JAVA CLASS LIBS
    • 

  • Fixed component ID
    620700130
    • 



Applicable component levels


    

  • R600  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            28 February 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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