PI45771: PERFORMANCE DEGRADATION WITH ENTERPRISE COBOL V5 UNDER CICS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• With Enterprise COBOL V5, the Working Storage section of a
  COBOL program is now included into the Writable Static Area
  (WSA). When linking several programs together, the size of the
  WSA can become very large. This may result in very high
  overhead during initialization.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL 5.1 compiling and  *
  *                 running programs using the DATA(31) and DLL  *
  *                 compiler options where the programs call out *
  *                 to other COBOL programs that are linked      *
  *                 together in a large DLL of routines (Dynamic *
  *                 Link Library).                               *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Runtime performance of COBOL            *
  *                      applications matching the above profile *
  *                      are slower than similar applications    *
  *                      compiled with earlier Enterprise COBOL  *
  *                      compilers.                              *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  In Enterprise COBOL V5, when DATA(31) is in effect, data items
  in WORKING-STORAGE are stored in an area called the 'writable
  static area' (WSA). When the WSA is initialized, the
  initialization is performed for all the programs linked
  together, even when only one of the programs is being called.
  This can often result in unnecessary initialization overhead at
  runtime.
  

Problem conclusion

• A new compiler option, WSOPT, was added to the compiler.  When
  this option is specified, the compiler and COBOL runtime handle
  WORKING-STORAGE in a manner that is similar to earlier
  Enterprise COBOL compilers.  In particular, the WORKING-STORAGE
  memory is handled in a more dynamic and granular fashion so that
  the initialization of WORKING-STORAGE is done only for the
  program that is being called and not for all the programs with
  which that program is linked.
  

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:

  PI47210 PI62199

Modules/Macros

•    IGYPCNTL
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655W3200

Applicable component levels

• R510 PSY UI35332

     UP16/02/19 P F602

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.