SMF Type 77 Record
This table shows the record layout for type 77 SMF records
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Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word).
Segment descriptor (see record length field).
Bit Meaning When Set
0 New SMF record format
1 Subtypes used
3-6 Version indicators
7 System is running in PR/SM mode
Record type 77 (X'4D').
Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
Date when the record was moved into the SMF buffer, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
System identification (from the SMFPRMxx SID parameter).
Subsystem identification (‘RMF').
Number of triplets in this record. A triplet is a set of three SMF fields (offset/length/number values) that defines a section of the record. The offset is the offset from the RDW.
Offset to RMF product section from RDW.
Length of RMF product section.
Number of RMF product sections.
Offset to enqueue control section from start of record, including record descriptor word (RDW).
Length of enqueue control section.
Number of enqueue control sections.
Offset to enqueue data section from start of record, including record descriptor word (RDW).
Length of enqueue data section.
Number of enqueue data sections.
RMF version number.
Product name (‘RMF').
Time that the RMF measurement interval started, in the form 0hhmmssF, where hh is the hours, mm is the minutes, ss is the seconds, and F is the sign.
Date when the RMF measurement interval started, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
Duration of the RMF measurement interval, in the form mmsstttF where mm is the minutes, ss is the seconds, ttt is the milliseconds, and F is the sign. (The end of the measurement interval is the sum of the recorded start time and this field.)
Number of RMF samples.
Bit Meaning When Set
1 Samples have been skipped
2 Record was written by RMF Monitor III
3 Interval was synchronized with SMF 4-15 Reserved.
Sampling cycle length, in the form 000ttttF, where tttt is the milliseconds and F is the sign (taken from CYCLE option). The range of values is 0.050 to 9.999 seconds.
MVS software level (consists of an acronym and the version, release, and modification level - ZVvvrrmm).
Indicates the type of processor complex on which data measurements were taken. Value Meaning 3 9672, zSeries 49 31 SMF75PRF 1 binary Processor flags.
Bit Meaning When Set
0 The system has expanded storage
1 The processor is enabled for ES connection architecture (ESCA)
2 There is an ES connection director in the configuration
3 System is running in z/Architecture mode
4 At least one zAAP is currently installed
5 At least one zIIP is currently installed
6 Enhanced DAT architecture available
PR/SM partition number of the partition that wrote this record.
SMF record level change number (X'55' for z/OS V1R10 RMF). This field enables processing of SMF record level changes in an existing release.
Interval expiration time token. This token can be used to identify other than RMF records that belong to the same interval (if interval was synchronized with SMF).
Offset GMT to local time (STCK format).
Offset to reassembly area relative to start of RMF product section.
Length of reassembly area. Area consists of a fixed header and a variable number of information blocks. Length depends on the record type/subtype, but is fixed for a specific type/subtype.
Reassembly area indicator. Value Meaning 0 Record is not broken. 1 Record is broken.Note: This field is used to indicate whether an SMF record is a broken record. Therefore, offset (SMF77RAO) and length (SMF77RAL) are only valid if SMF77RAN = 1. A reassembly area is only present in broken records.
Original interval length as defined in the session or by SMF (in seconds).
SYNC value in seconds.
Projected gathering interval end (STCK format) GMT time.
Sysplex name as defined in parmlib member COUPLExx.
System name for current system as defined in parmlib member IEASYSxx SYSNAME parameter.
Total number of broken records built from the original large record.
Sequence number of this broken record. Every broken record built from the same large record must have a unique sequence number, it is in the range from 1 to SMF77RBR.
Offset to first reassembly information block relative to start of reassembly area header.
Length of reassembly information block.
Number of reassembly information blocks (same value as SMF77TRN in header section).
Total number of sections in the original large record. This field contains information of how many sections of a specific type were contained in the original SMF record. This field is a copy of the number field of the triplet in the original (non broken) record.
Position of the first of one or more consecutive sections described by this block as in the original record. Values in the range of 1 to SMF77RNN are valid for correct processing. A value of 0 will skip processing of this information block. This field provides information where the sections that are part of this broken record were placed in the original record before the split took place. The actual number of consecutive sections contained in this record is available from the actual triplet in the header extension.
Enqueue status indicator
Bit - Meaning
0 Enqueue summary table full
1 Specified resource had no contention
2 Enqueue had bad CPU clock
3 Enqueue event processing abend
4 On – detail data requested Off – summary data requested
5 On – GRS=NONE (local sysplex)
6 Off – GRS=RING, if bit 5 = '0'
7 On – bits 5 and 6 are valid
Second status indicator Bit Meaning 0 GRS system problems 1 RMF/GRS interface problems 2-7 Reserved.
Major name of resource.
Minor name of resource.
Minimum resource contention time, in 1024-microsecond units.
Maximum resource contention time, in 1024-microsecond units.
Total resource contention time, in 1024-microsecond units.
Counter for queue length of 1.
Counter for queue length of 2.
Counter for queue length of 3.
Counter for queue length of 4 or more.
Minimum number of exclusive requests waiting.
Maximum number of exclusive requests waiting.
Minimum number of share requests waiting.
Maximum number of share requests waiting.
Total number of contention events that occurred during the measurement interval.
Minor name length.
Current resource detail indicator
Bit - Meaning When Set
0 Resource still in contention
1 On – scope of systems Off – scope of system
2 On – owner has exclusive control of the resource Off – owner shares the resource
3 On – first job is waiting for exclusive use Off – first job is waiting for shared use
4 On – second job is waiting for exclusive use Off – second job is waiting for shared use
5 Resource is global
Number of owners using the resource at maximum contention.
Number of jobs waiting for the resource at maximum contention.
Job name 1 of resource owner during period of maximum contention.
Job name 2 of resource owner during period of maximum contention.
Job name 1 waiting for the resource owner during period of maximum contention.
Job name 2 waiting for the resource owner during period of maximum contention.
System identifier of job name 1 (resource owner at maximum contention).
System identifier of job name 2 (resource owner at maximum contention).
System identifier of job name 1 (waiting for the resource at maximum contention).
System identifier of job name 2 (waiting for the resource at maximum contention).
Total number of waiting requests during the measurement interval.
The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.