PJ40713: LPAR UTILISATION IS 1/3 OF EXPECTED AFTER PJ40215 13/01/21 PTF PECHANGE

APAR status

• Closed as program error.

Error description

• See Problem Summary.
  

Local fix

• na
  

Problem summary

• APAR NUMBER:  PJ40713
  PRODUCT:  z/TPF
  FUNCTIONAL AREA:  CONTINUOUS DATA COLLECTION (CDC)
  SHIPPED IN PUT:  10
  
  ABSTRACT:
  LPAR Utilization is incorrect with PJ40215 applied.
  
  PACKAGE CONTENTS:
  Source Segments:
  (C) base/rt/cdcp.c
  
  Object Only Binaries:
  None.
  
  Configuration Independent Binaries:
  (C) base/obj/cdcp.o
  (C) base/load/CDCP.so
  
  Support Files:
  base/lst/cdcp.lst
  base/lst/CDCP.map
  
  OTHER BINARIES TO BUILD: NO
  None.
  
  
  COMMENTS:
  LPAR utilization is calculated by totaling the dispatch time of
  all CP-type processors assigned to an LPAR and dividing by the
  number of CP-type processors assgned to the LPAR. Segemnt
  cdcp.c, funtion cdc_add_lpar_utilization_data, has a loop that
  totals the dispatch time of all CP-type processors assigned to
  an LPAR. A bug in the loop causes the loop to not total the
  dispatch times: when the loop exits, what should be the total
  dispatch time of all the CP-type processors is actually the
  dispatch time of only the last CP-type processor. That
  incorrect dispatch total is then divided by the correct number
  of CP-type processors assigned to the LPAR. The result is if
  there is more than one CP-type processor assigned to the LPAR,
  CDC will report an incorrect LPAR utilization.
  

Problem conclusion

• SOLUTION:
  The solution is to correctly total the dispatch times of all
  CP-type processors assigned to the LPAR.
  
  COREQS: NO
  None.
  
  MIGRATION CONSIDERATIONS: NO
  None.
  
  BUILD COMMANDS AND INSTRUCTIONS: YES
  #maketpf commands for linux
  maketpf -f CDCP cdcp.o
  maketpf CDCP link TPF_VERIFY_LINK_REFS=NO
  maketpf CDCP link
  
  UPDATED INFORMATION UNITS: NO
  None.
  
  See your IBM representative if you need additional information.
  
  DOWNLOAD INSTRUCTIONS:
  http://www.ibm.com/software/htp/tpf/maint/maintztpf.html
  
  APAR URL:
  http://www.ibm.com/software/htp/tpf/ztpfmaint/put10/PJ40713.htm
  

Temporary fix

Comments

APAR Information

• 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

  Z/TPF

• Fixed component ID

  5748T1501

Applicable component levels

• R110 PSY

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