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        SMF 111-6 System Environment Statistics
        • 18 Mar 2024
        • 3 Minutes to read
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        Contents

        SMF 111-6 System Environment Statistics

        • Updated on 18 Mar 2024
        • 3 Minutes to read
        • Contributors
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        Article summary

        Introduction

        When you install CICS® Transaction Gateway, a C header file and a IBM® z/OS® assembler copy macro are provided to define the SMF record structure. The C header file is CTGSMF, located in the SCTGINCL data set and the IBM z/OS assembler copy macro is file CTGSMFA, located in the SCTGMAC data set.

        Figure 1. SMF record format
        smfdata.gif

        • SMF header data structure
          The format of the header for the SMF record for type 111 records is fixed and is common to SMF records from other CICS products. The Gateway daemon completes the following fields that are marked with "*". The SMF subsystem fills in the rest of the fields. User applications are not required to complete any SMF fields.
        • SMF product section data structure
          The Gateway daemon fills in all the fields in the generic product section for the SMF record for type 111 records. Parts of the record are of fixed format and common to all SMF products. Some parts of this record are specific to CICS Transaction Gateway and have the prefix "CTG".
        • Statistics record header
          The data section contains a number of statistics records. Each statistics record has a header. The header is common to all CICS Transaction Gateway statistics records. You can work out the type of data that follows the record from the CTG_RECORDID and CTG_RECVER fields.
        • Connection Manager (CM) statistics SMF data
          CICS Transaction Gateway CM statistics use this format for writing SMF records.
        • CICS Server all (CS) statistics SMF data
          CICS Transaction Gateway CS statistics use this format for writing SMF records.
        • CICS Server Instance (CSx) SMF statistics for EXCI
          CICS Transaction Gateway statistics records normally have only one instance. The exceptions are CSx and WSx statistics.
        • CICS Server Instance (CSx) SMF statistics for IPIC
          CICS Transaction Gateway statistics records normally have only one instance. The exceptions are CSx and WSx statistics.
        • Gateway daemon (GD) statistics SMF data
          CICS Transaction Gateway daemon statistics use this format for writing SMF records.
        • Protocol handler (PH) statistics SMF data
          CICS Transaction Gateway PH statistics have this format.
        • System environment (SE) statistics SMF data
          CICS Transaction Gateway SE statistics have this format.
        • Worker thread (WT) statistics SMF data
          CICS Transaction Gateway WT statistics have this format.
        • Web service all (WS) statistics SMF data
          CICS Transaction Gateway WS statistics use this format for writing SMF records.
        • Web service instance (WSx) SMF statistics
          CICS Transaction Gateway statistics records normally have only one instance. The exceptions are CSx and WSx statistics.
        • SMF date format - byte packed date format
          Definition of the format used to represent dates in SMF.
        • SMF data format - sample values
          Sample values for CTG_COLTIME and CTG_LOCOFFSET.

        Fields

        Stored in ctgse

        SMF FieldDB Column nameDescriptionUnit
        ctghd_rtyValue is always CTG6
        SMF11_SIDctghd_sidSID
        SMF111_SDTEctghd_dttmDate-Time the record was written
        SMF111_VRMctghd_vrmRecord version
        SMF111_PRNctghd_prnGeneric Product Name
        SMF111_SPNctghd_spnGateway daemon identifier
        CTG_STATTYPEctghd_statypeStatistics type. This event drives the statistic to be recorded
        CTG_COLDATE
        CTG_COLTIME        		ctghd_coldttmCollection date and time
        CTG_LOCOFFSETctghd_locoffsetOffset from GMT to local timesecond
        CTG_LSTRESETctghd_lstresetLast reset time or initialization timesecond
        CTG_INTERVALctghd_intervalLength of time remaining before the next interval.second
        CTG_INTVCOUNTctghd_intvcountA sequence number that increments each time an interval is requested
        CTG_STARTDATE
        CTG_STARTTIME        		ctghd_startdttmGateway start date and time
        ctgse_selimThe amount of available extended user private storage in the Gateway daemon address spacebyte
        CTG_SE_CELOALctgse_celoalThe amount of currently allocated extended user private storage in the Gateway daemon address space. This value can increase or decreasebyte
        CTG_SE_CHEAPGCMINctgse_cheapgcminJVM heap size after GC
        CTG_SE_SHEAPINITctgse_sheapinitJVM initial heap size
        CTG_SE_SHEAPMAXctgse_sheapmaxJVM maximum heap size
        CTG_SE_IGCTIMEctgse_igctimeJVM GC time
        CTG_SE_LGCTIMEctgse_lgctimeJVM GC time
        CTG_SE_IGCCOUNTctgse_igccountJVM GC count
        CTG_SE_LGCCOUNTctgse_lgccountJVM GC count
        CTG_SE_C31MAXctgse_c31maxLimit of used memory ELOAL
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