OA45951: HIGH CPU TIME SPENT IN RTD WHEN INVOKED BY PFA

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• PFA invokes RTD internally to validate and verify certain
  conditions.  When RTD is called to process an Asidlist, RTD
  incorrectly processes ALL Asids on the system, then attempts to
  discard any that are NOT on the list.
     This causes unnecessary overhead and will exhibit itself as
  high CPU when RTD runs.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of z/OS Runtime Diagnostics        *
  *                 for HBB7790.                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Run Time Diagnostics consumes high CPU  *
  *                      whenever it is invoked by Predictive    *
  *                      Failure Analysis.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  PFA invokes RTD internally to validate low metric activity
  for certain checks.  When PFA invokes RTD, it can invoke it
  for an ASID, a set of ASIDs, or for the total system.  RTD
  erroneously analyzes all requests as a request for the total
  system which results in RTD processing unnecessary data for
  requests for specific ASIDs or sets of ASIDs.
  

Problem conclusion

• Code has been corrected to process request correctly.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UA75439

Modules/Macros

• HZRINPVT
  

Fix information

• Fixed component name

  RUN TIME DIAGNO

• Fixed component ID

  5752SCRTD

Applicable component levels

• R790 PSY UA75439

     UP14/11/19 P F411 Ž

Fix is available

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