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PM67241: RUNTIME PERFORMANCE DEGRADATION WHEN USING DYNAMIC_CAST CALL ANDLP64

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APAR status

  • Closed as program error.

Error description

  • Runtime performance degradation when using dynamic_cast call
and LP64. Users who uses dynamic_cast a lot or in hot paths are
affected.

Local fix

  • N/A

Problem summary

  • ****************************************************************
* USERS AFFECTED: Users who uses dynamic_cast a lot or in hot  *
*                 paths under the BOB model                    *
****************************************************************
* PROBLEM DESCRIPTION: dynamic_cast is much slower in the BOB  *
*                      model than the compat model             *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************

Problem conclusion

  • Apply provided service.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PM67241
    • 

  • Reported component name
    ANSI C++ CLASS
    • 

  • Reported component ID
    568819807
    • 

  • Reported release
    770
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2012-06-20
    • 

  • Closed date
    2012-06-20
    • 

  • Last modified date
    2014-05-02
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    
PM63646
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    
UK79700 106PC1Ÿ 106PC1Ÿ
    

    • 



Modules/Macros


    

  • CELHDCTI CELQDCTI CEL4DCTI

    



Fix information


    

  • Fixed component name
    ANSI C++ CLASS
    • 

  • Fixed component ID
    568819807
    • 



Applicable component levels


    

  • R770  PSY  UK79700
       UP12/07/26  P  F207
    • 



Fix is available


    

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              [{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.7","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSTLTF","label":"z\/OS XL C\/C++"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.7","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            02 May 2014
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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