Skip to main content

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


Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

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
    •  
  
 
 
 

 









Rate this page:



(0 users)Average rating 





















	
	
	
	
	









	



























Copyright and trademark information



	
IBM, the IBM logo and ibm.com are trademarks of International Business Machines Corp., registered in many jurisdictions worldwide.  Other product and service names might be trademarks of IBM or other companies.  A current list of IBM trademarks is available on the Web at "Copyright and trademark information" at www.ibm.com/legal/copytrade.shtml.































Rate this page:






(0 users)Average rating









Add comments














Document information





	
Runtimes for Java Technology


	
Java Class Libraries


	




	
Software version:

	6.0

	





	
Reference #:

IV33530






Modified date:

2013-02-28








Translate my page














































 



Content navigation