PH40054: PERFORMANCE IMPROVEMENT IN COBOL RUNTIME MESSAGE PROCESSING WHEN THE TEST COMPILER OPTION IS IN EFFECT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Performance degradation can occur when COBOL programs are
  compiled with TEST(...) or NOTEST(DWARF), and a COBOL run-time
  message is issued.
  

Local fix

• Compile with NOTEST(NODWARF)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5.1 and later     *
  *                 releases running programs that issue COBOL   *
  *                 runtime messages.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: Performance degradation during          *
  *                      COBOL runtime messages processing       *
  *                      occurs if the COBOL                     *
  *                      program  was compiled with the DWARF    *
  *                      suboption of                            *
  *                      TEST compiler option.                   *
  ****************************************************************
  * RECOMMENDATION: Install the PTF provided.                    *
  ****************************************************************
  Extra processing time was used when
  retrieving Dwarf information for the program during runtime
  message processing. This retrieval was done repeatedly
  when the same message was printed a large number of times,
  resulting in performance degradation for the COBOL
  application.
  

Problem conclusion

• The COBOL runtime library was changed to reduce
  the frequency of Dwarf access by caching the Dwarf information.
  
  COB0501T/K COB0502T/K COB0601T/K COB0602T/K COB0603T/K
  

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:

Modules/Macros

• IGZCER4  IGZCEV4  IGZCMGEN IGZCMGUE IGZLLIBV IGZXAPI  IGZXCA31
  IGZXCDA  IGZXD24  IGZXDMR  IGZXJNI2 IGZXLPIO IGZXLPKA IGZXLPKB
  IGZXLPKC IGZXLPKD IGZXLPKE IGZXLPKF IGZXLPKG IGZXPK2
  

Fix information

• Fixed component name

  LE ENT COBOL LI

• Fixed component ID

  568819812

Applicable component levels

• R7B0 PSY UI77335

     UP21/10/01 P F109

• R7C0 PSY UI77337

     UP21/10/01 P F109

• R7D0 PSY UI77339

     UP21/10/01 P F109

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.