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IV38445: CLNT WITH THOUSANDS NFS MOUNTS IS SLUGGISH DUE TO LOCK CONTENTIO APPLIES TO AIX 6100-08

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APAR status

  • Closed as program error.

Error description

  • With AIX NFS client (can be any supported NFS version),
when there are several thousands of NFS mounts, the
system may behave sluggish for operations over the NFS
filesystems. kdb or dump will indicate that there are
several waiter threads for the NFS global rtable lock.

Local fix

  • Reduce the number of NFS mounted filesystems.

Problem summary

  • Commands like "df" will hang and
NFS mounts will be slow

Problem conclusion

  • In flushlist(), check to see if vnode has pages
and is marked as either dirty or mmap'd
and in rflush(), remove this same check

Temporary fix

  • 



Comments


    

  • 6100-06 - use AIX APAR IV25348
6100-07 - use AIX APAR IV32018
6100-07 - use AIX APAR IV32018
6100-08 - use AIX APAR IV38445
7100-00 - use AIX APAR IV34118
7100-01 - use AIX APAR IV37938
7100-02 - use AIX APAR IV38446

    



APAR Information




    

  • APAR number
    IV38445
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2013-03-20
    • 

  • Closed date
    2013-03-20
    • 

  • Last modified date
    2013-11-26
    • 





    

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

    
IV25348
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U855968
       UP13/08/02  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            26 November 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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