IBM Support

IV67220: SMALL (2-3%) PERFORMANCE REGRESSION IN JAVA SDK 7.1 WHEN RUNNING ON SYSTEMS WITH 2 CORES OR LESS

A fix is available

PI30707: SHIP JAVA 7.1 SR2 + IV66608+ IV66375+ IV66944+ IV65517+ IV66818+ IV67220 AS WSAS V855x IFIX

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
.
Stack Trace: N/A
.

Local fix

  • 



Problem summary


    

  • For some workloads, a small (2-3%) throughput regression can be
observed when running Java SDK 7.1 on systems with 2 cores or
less.

    



Problem conclusion


    

  • The JIT compiler code has been changed to eliminate the
regression.
.
This APAR will be fixed in the following Java Releases:
   7 R1 SR2 FP10  (7.1.2.10)
.
Contact your IBM Product's Service Team for these Service
Refreshes and Fix Packs.
For those running stand-alone, information about the Service
Refreshes and Fix Packs can be found at:
           https://www.ibm.com/developerworks/java/jdk/

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV67220
    • 

  • Reported component name
    JIT
    • 

  • Reported component ID
    620700124
    • 

  • Reported release
    130
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2014-11-21
    • 

  • Closed date
    2014-11-21
    • 

  • Last modified date
    2014-11-21
    • 





    

  • 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
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            21 November 2014
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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