OA48419: NEW FUNCTION - IMPROVED LARGE PAGE CLEARING ON Z13 MACHINES

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• New Function
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users at HBB7790 on z13 machines.            *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR improves the time it takes    *
  *                      to clear large pages on z13 machines.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Clearing a large page is a fairly expensive operation.  As
  more applications use large pages, this may lead to system
  performance problems.
  

Problem conclusion

Temporary fix

Comments

• For z13 machines, this APAR will optimize the instruction
  set used to clear a large page to improve system performance.
  
  Additional Search Keywords:  R2964/K   D/T2964
  

APAR Information

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

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

  UA78870

Modules/Macros

• IAXCG    IAXCU    IAXDR    IAXFB    IAXFJ
  IAXFM    IAXFN    IAXFS    IAXFU    IAXFY    IAXGI    IAXMH
  IAXMR    IAXPB    IAXPL    IAXPR    IAXVH    IAXVI    IAXVN
  IAXVP    IAXVT    IAXV1    IAXV2    IAXV3    IAXV8    IAXXL
  IAXYZ
  

Fix information

• Fixed component name

  RSM - REAL STOR

• Fixed component ID

  5752SC1CR

Applicable component levels

• R790 PSY UA78870

     UP15/09/30 P F509

Fix is available

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