PI41106: IMPROVE PERFORMANCE OF IFCID COLLECTION PARTICULARLY FOR IFCID150

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Sites may experience increased CPU utilization in the IRLM
  address space depending on the usage profile needed to
  meet the sites monitoring methodology.
  
  additional key words:
  Lock data XLOK REALTHDA DP_SY_EXC DP_TH_EXC IFCID0150
  IRLM XCF activity  High CPU
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: OMEGAMON XE for DB2 PE/DB2PM                 *
  *                 users of component                           *
  *                 - Classic Interface                          *
  *                 - CUA Interface                              *
  *                 - OMEGAMON collector                         *
  *                 - TEP                                        *
  *                 - Enhanced 3270 UI                           *
  ****************************************************************
  * PROBLEM DESCRIPTION: 1.                                      *
  *                      Collection of lock information may      *
  *                      cause an increase in CPU in the IRLM    *
  *                      address space, an increase in           *
  *                      communication with the IRLM XCF group,  *
  *                      and negatively impact applications      *
  *                      obtaining locks.                        *
  *                                                              *
  *                      2.                                      *
  *                      IDBK and IDFR exceptions are not firing *
  *                      and the background and foreground       *
  *                      utilization are not accurate            *
  *                      percentages of IDBACK and IDFORE,       *
  *                      respectively.                           *
  ****************************************************************
  * RECOMMENDATION: Apply this PTF.                              *
  ****************************************************************
  PROBLEM SUMMARY:
  1. Collection of lock information can be too expensive.
  2. In the context of foreground and background utilization,
     address spaces were counted instead of threads.
  
  PROBLEM CONCLUSION:
  1. Collect lock information less frequently and via
     other methods.
  2. Count threads instead of address spaces.
  
  KEYWORDS:
  IRLM XCF LOCK LATCH INCREASE CPU
  IDBK IDFR IDBACK IDFORE CONNECTIONS ZSUMM FOREGROUND
  BACKGROUND UTILIZATION
  

Problem conclusion

• 1. Collect lock information less frequently and via
     other methods.
  2. Count threads instead of address spaces.
  

Temporary fix

Comments

• ×**** PE16/01/04 FIX IN ERROR. SEE APAR PI54779  FOR DESCRIPTION
  

APAR Information

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

  PI28840

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

  UI33579

Modules/Macros

• HKDB530J KDB530J  KD2OACOD KO2ACONB KO2APCCA KO2APCCK KO2APCCS
  KO2APCFA KO2APCFK KO2APCFS KO2APCJA KO2APCJK KO2APCJS KO2APCNA
  KO2APCNK KO2APCNS KO2APCOA KO2APCOK KO2APCOS KO2APCPA KO2APCPK
  KO2APCPS KO2APCQA KO2APCQK KO2APCQS KO2APC1A KO2APC1K KO2APC1S
  KO2APC2A KO2APC2K KO2APC2S KO2APC3A KO2APC3K KO2APC3S KO2APC4A
  KO2APC4K KO2APC4S KO2APC6A KO2APC6K KO2APC6S KO2APC9A KO2APC9K
  KO2APC9S KO2APINA KO2APINK KO2APINS KO2CCINB KO2CCNSA KO2CCNSK
  KO2CCNSS KO2CDFCA KO2CDFCK KO2CDFCS KO2CDFSA KO2CDFSK KO2CDFSS
  KO2CDINA KO2CDINK KO2CDINS KO2CDSYA KO2CDSYK KO2CDSYS KO2CIFAB
  KO2CIFDB KO2CIF3A KO2CIF3K KO2CIF3S KO2CIF8A KO2CIF8K KO2CIF8S
  KO2CIMSC KO2CIMSD KO2CIMSE KO2CISBA KO2CISBK KO2CISBS KO2CLKDA
  KO2CLKDK KO2CLKDS KO2CMVIF KO2CPUCL KO2CPURT KO2CPUST KO2CRLIC
  KO2CRLID KO2CRLIE KO2CRLIF KO2CSYSA KO2CSYSK KO2CSYSS KO2CTHAA
  KO2CTHAK KO2CTHAS KO2CTHBA KO2CTHBK KO2CTHBS KO2CTHDA KO2CTHDK
  KO2CTHDS KO2CTHEA KO2CTHEK KO2CTHES KO2CTHGA KO2CTHGK KO2CTHGS
  KO2CTHHA KO2CTHHK KO2CTHHS KO2CTHIA KO2CTHIK KO2CTHIS KO2CTHJA
  KO2CTHJK KO2CTHJS KO2CTHKA KO2CTHKK KO2CTHKS KO2CTHLA KO2CTHLK
  KO2CTHLS KO2CTHMA KO2CTHMK KO2CTHMS KO2CTHNA KO2CTHNK KO2CTHNS
  KO2CTHOA KO2CTHOK KO2CTHOS KO2CTHPA KO2CTHPK KO2CTHPS KO2CTHQA
  KO2CTHQK KO2CTHQS KO2CTHRA KO2CTHRK KO2CTHRS KO2CTHSA KO2CTHSK
  KO2CTHSS KO2CTH1A KO2CTH1K KO2CTH1S KO2CTH2A KO2CTH2K KO2CTH2S
  KO2CTH3A KO2CTH3K KO2CTH3S KO2CTH5A KO2CTH5K KO2CTH5S KO2CTH6A
  KO2CTH6K KO2CTH6S KO2CTH7A KO2CTH7K KO2CTH7S KO2CTH8A KO2CTH8K
  KO2CTH8S KO2CTH9A KO2CTH9K KO2CTH9S KO2CT2SA KO2CT2SK KO2CT2SS
  KO2CVTIC KO2CVTIF KO2CVTIG KO2CVTSC KO2CVTSF KO2CVTSG KO2DINTB
  KO2ED01K KO2ED01S KO2EGX1K KO2EGX1S KO2EIX2K KO2EIX2S KO2HDTIB
  KO2HINTB KO2IINIA KO2IINIK KO2IINIS KO2IINTB KO2I148  KO2NCS1B
  KO2NCS3B KO2OCINB KO2ODINB KO2ODSTB KO2OEVCB KO2OHILB KO2OINTB
  KO2ONCYB KO2OTHAB KO2OTHBB KO2OTHZB KO2OTH6B KO2OXCMB KO2OXDVB
  KO2OXSYB KO2OXTHB KO2OXTRB KO2OXTSB KO2SIDBK KO2SIDFR KO2SUMMH
  KO2SYSTM KO2S148E KO2WTHTB KO2WXCPB KO2XCINB KO2XDBSK KO2XDBSS
  KO2XDFSK KO2XDFSS KO2XDINA KO2XDINK KO2XDINS KO2XLKDA KO2XLKDK
  KO2XLKDS KO2XRCI2 KO2XRLIC KO2XRLID KO2XRLIE KO2XRLIF KO2XSY2K
  KO2XSY2S KO2XTHSA KO2XTHSK KO2XTHSS KO2XTH1K KO2XTH1S KO2XTH3K
  KO2XTH3S KO2XVTIF KO2XVTIG KO2ZAGTA KO2ZAGTK KO2ZAGTS KO2ZATC
  KO2ZCBA  KO2ZCBRA KO2ZCBRK KO2ZCBRS KO2ZCPR  KO2ZCPS  KO2ZDBIA
  KO2ZDBIK KO2ZDBIS KO2ZDB2  KO2ZDVTA KO2ZDVTK KO2ZDVTS KO2ZIDBK
  KO2ZIDFR KO2ZIIOK KO2ZIIOS KO2ZIORA KO2ZIORK KO2ZIORS KO2ZLKNA
  KO2ZLKNK KO2ZLKNS KO2ZOMI  KO2ZSTLA KO2ZSTLK KO2ZSTLS KO2ZTOP
  KO2ZXCB  KO2ZXIO  KO2ZXRE  KO2ZXSN
  

Fix information

• Fixed component name

  OM XE DB2PE/PM

• Fixed component ID

  5655OPE00

Applicable component levels

• R530 PSY UI33579

     UP15/12/10 P F512

Fix is available

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