PM92473: THERE IS A INCREASED CPU CONSUMPTION AFTER MIGRATING FROM TS R3.2 TO R4.2 WITH EI1-2 TRACE TURNED ON

A fix is available

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You can track all active APARs for this component.

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 E *
    ****************************************************************
    * 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 number

    PM92473

  • Reported component name

    CICS TS Z/OS V5

  • Reported component ID

    5655Y0400

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-07-08

  • Closed date

    2013-08-27

  • Last modified date

    2013-10-03

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

    PM91388

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

    UK97125

Modules/Macros

  •    DFHAPTRS DFHEDFCB DFHEDFCC DFHEDFCE DFHEDFCR
    DFHEDFCS DFHEDFD  DFHEDFDL DFHEDFS  DFHEDFU  DFHEIGR  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 DFHEISC
    DFHEISR  DFHEITL  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 V5

  • Fixed component ID

    5655Y0400

Applicable component levels

  • R800 PSY UK97125

       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.



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Document information


More support for:

z/OS family

Software version:

5.1

Reference #:

PM92473

Modified date:

2013-10-03

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