PM91388: THERE IS A INCREASED CPU CONSUMPTION AFTER MIGRATING FROM TS R3.2 TO R4.2 WITH EI1-2 TRACE TURNED ON

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You have just migrated from CICS/TS R3.2 up to R4.2 and have
  EI1-2  trace turned on. You see an possible increase of  CPU
  consumption up to 33%. When you turn on EI1 or not turn on EI
  tracing you do not see this increase of CPU consumption.
  In the program DFHEITTR there has been a change in the HANDLE
  CONDITION and IGNORE CONDITION routines, which accounts for the
  increase in CPU consumption.
  
  
  
  
  
  
  
  
  
  Additional Symptom(s) Search Keyword(s): KIXREVBDB
  

Local fix

• Do not run with EI1-2 trace active.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Unexpected increase in CPU usage with   *
  *                      EI level 2 tracing.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When EXEC CICS HANDLE CONDITION is used and Domain EI tracing
  is enabled at level 2 there is a disproportionate increase in
  CPU usage compared with release V3.2.  This is caused by a loop
  examining supplied command keywords not exiting at the end
  of the keyword list, but executing for the maximum number of
  keywords.
  

Problem conclusion

• DFHEISR routine MAINLINE_TRACE has been updated to exit the
  iteration of comkeys when the end of list is reached signified
  by x'00'.  DFHARG0 routines dfharg0_get_tr_length and
  dfharg0_language have been inlined to improve performance.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  PM92473 UK97124

Modules/Macros

•    DFHAPTRS DFHEDFCB DFHEDFCC DFHEDFCE DFHEDFCR
  DFHEDFCS DFHEDFD  DFHEDFDL DFHEDFS  DFHEDFU  DFHEIN00 DFHEIN01
  DFHEIN02 DFHEIN03 DFHEIN11 DFHEIN12 DFHEIN13 DFHEIN16 DFHEIN19
  DFHEIN20 DFHEIN21 DFHEIN22 DFHEIN23 DFHEIN26 DFHEIN27 DFHEIN50
  DFHEIN51 DFHEIN52 DFHEIN53 DFHEIN54 DFHEIQAS DFHEIQCS DFHEIQEC
  DFHEIQIS DFHEIQML DFHEIQPI DFHEIQSY DFHEIQTS DFHEISR  DFHEITRI
  DFHEMT00 DFHEMT01 DFHEMT02 DFHEMT03 DFHEMT11 DFHEMT12 DFHEMT13
  DFHEMT16 DFHEMT19 DFHEMT20 DFHEMT21 DFHEMT22 DFHEMT23 DFHEMT26
  DFHEMT27 DFHEMT50 DFHEMT51 DFHEMT52 DFHEMT53 DFHEMT54 DFHEMT55
  DFHEMT56 DFHEXMAB DFHEXMG2 DFHEXMS2
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R700 PSY UK97124

     UP13/09/06 P F309

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.