PI42686: (COB V5.2) A DECREASE IN PERFORMANCE CAN OCCUR FOR CICS TRANSACTIONAL PROCESSES USING EXPONENTIATION.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• (COB V5.2)  When compared to COB V4.2, a significant increase
  in response and CPU time can occur for CICS transactional
  processes where transactions are "short processes" by
  definition and exponentiation is used.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL 5.2 compiling      *
  *                 programs that have arithmetic statements     *
  *                 that compute exponential expressions with    *
  *                 large powers                                 *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Performance: A program compiled with    *
  *                      Enterprise COBOL 5.2 ran slower than    *
  *                      the same program compiled with          *
  *                      Enterprise COBOL 4.2.                   *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply provided service.                      *
  *                                                              *
  ****************************************************************
  Exponential expressions with integral powers greater than 32
  were being less aggressively optimized than exponential
  expressions with smaller powers.
  

Problem conclusion

• The compiler was modified to optimize exponential expressions
  with large powers.
  

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:

  PI46537

Modules/Macros

• IGYCBE
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655W3200

Applicable component levels

• R520 PSY UI29671

     UP15/08/04 P F508

Fix is available

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