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IV62210: MULTI-TENANT GC VERBOSE LOG SHOWS A HIGH PERCENTAGE OF NON-LOCAL MEMORY

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: In multi-tenant mode verbose log on NUMA enabled
machines shows very high percentace of non-local memory is used.
.
Stack Trace: N/A
.
Verbose gc log contains many entries with 99% non-local memory.
Example entry:<numa common="2887424" local="0"
non-local="550945096" non-local-percent="99" />

Local fix

  • n/a

Problem summary

  • The problem is caused by incorrectly attributing all tenant
memory to non-local NUMA nodes.

Problem conclusion

  • The JVM has been updated to correctly attribute tenant memory to
the appropriate NUMA nodes (local and non-local).
.
This APAR will be fixed in the following Java Releases:
   7 R1 SR1 FP1   (7.1.1.1)
.
Contact your IBM Product's Service Team for these Service
Refreshes and Fix Packs.
For those running stand-alone, Java maintenance is available
from:
           https://www.ibm.com/developerworks/java/jdk/

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV62210
    • 

  • Reported component name
    J9 COMMON CODE
    • 

  • Reported component ID
    620700127
    • 

  • Reported release
    270
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2014-07-02
    • 

  • Closed date
    2014-07-02
    • 

  • Last modified date
    2014-07-02
    • 





    

  • 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
    J9 COMMON CODE
    • 

  • Fixed component ID
    620700127
    • 



Applicable component levels


    

  • R270  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            21 February 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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