IBM Support

MA45729 - OSP-DB-JRN Degraded performance due to increased IO and gate
contention

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 APAR (Authorized Program Analysis Report)

Abstract

OSP-DB-JRN Degraded performance due to increased IO and gate
contention

Error Description

Running an internal performance benchmark showed performance    
degradation due to increased IO and gate contention.            

Problem Summary

****************************************************************
* PROBLEM: (MA45729) Licensed Program = 5770999 for i 7.1,     *
*                                        i 7.2, and i 7.3      *
*           Severe Performance Degradation                     *
****************************************************************
* USERS AFFECTED: All IBM i operating system users.            *
****************************************************************
* RECOMMENDATION: Apply LIC PTF MF62259 for i 7.1.             *
*                 Apply LIC PTF MF62258 for i 7.2.             *
*                 Apply LIC PTF MF62257 for i 7.3.             *
****************************************************************
********                                                        
Running an internal performance benchmark shows performance    
degradation due to increased IO and gate contention.            

Problem Conclusion

Journaled object information was being written to disk too      
aggressively. This change reduces the amount of journaled object
information being written.                                      

Temporary Fix

                       *********                                
                       * HIPER *                                
                       *********                                

Comments

Circumvention


PTFs Available

R710 MF62259 PTF Cover Letter   6320
R720 MF62258 PTF Cover Letter   6306
R730 MF62257 PTF Cover Letter   6299

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... Yes
Component.................................. 9400DG3DB
Failing Module.......................... RCHMGR
Reported Release................... R730
Duplicate Of..............................




System i Support

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Document Information

Modified date:
02 December 2016