








	*SMF Tools*

SMF Type 75 Record

This table shows the record layout for type 75 SMF records
(RMF Page Data Set Activity - z/OS 2.1).

List of other SMF record layouts available.
List of sample SMF reports.

Purpose: Record type 75 is written at the end of each RMF measurement interval. One record is written for each page data set monitored during the interval.

As with all SMF records RMF produces, record type 75 contains a header section and RMF product section. These are followed by:

Page Data Set Data Section Provides information on the use of auxiliary storage page slots and the use of the page data set by the auxiliary storage manager (ASM)

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SMF Type 75 Record -- RMF Page Data Set Activity - z/OS 2.1
Offset (Dec.)	Offset (Hex)	Name	Length	Format	Description
0	0	SMF75LEN	2	binary	Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word). See “Standard SMF Record Header” on page 13-1 for a detailed description.
2	2	SMF75SEG	2	binary	Segment descriptor (see record length field).
4	4	SMF75FLG	1	binary	System indicator Bit Meaning When Set 0 New record format 1 Subtypes used 2 Reserved. 3-6 Version indicators* 7 System is running in PR/SM mode. *See “Standard SMF Record Header” on page 13-1 for a detailed description.
5	5	SMF75RTY	1	binary	Record type 75 (X'4B').
6	6	SMF75TME	4	binary	Time since midnight, in hundredths of a second, when the record was moved into the SMF buffer.
10	A	SMF75DTE	4	packed	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.
14	E	SMF75SID	4	EBCDIC	System identification (from the SMFPRMxx SID parameter).
18	12	SMF75SSI	4	EBCDIC	Subsystem identification (‘RMF’).
22	16	SMF75STY	2	binary	Record subtype=1.
24	18	SMF75TRN	2	binary	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.
26	1A	--	2	binary	Reserved.
28	1C	SMF75PRS	4	binary	Offset to RMF product section from RDW.
32	20	SMF75PRL	2	binary	Length of RMF product section.
34	22	SMF75PRN	2	binary	Number of RMF product sections.
36	24	SMF75PSS	4	binary	Offset to page data set data section from RDW.
40	28	SMF75PSL	2	binary	Length of page data set data section.
42	2A	SMF75PSN	2	binary	Number of page data set data sections.
RMF Product Section(Offset from beginning of record: SMF75PRS)
0	0	SMF75MFV	2	packed	RMF version number.
2	2	SMF75PRD	8	EBCDIC	Product name (‘RMF’).
10	A	SMF75IST	4	packed	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.
14	E	SMF75DAT	4	packed	Date when the RMF measurement interval started, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
18	12	SMF75INT	4	packed	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.)
22	16	--	2	binary	Reserved.
24	18	SMF75SAM	4	binary	Number of RMF samples.
28	1C	--	2	binary	Reserved.
30	1E	SMF75FLA	2	binary	Flags Bit Meaning When Set 0 Reserved 1 Samples have been skipped 2 Record was written by RMF Monitor III 3 Interval was synchronized with SMF 4-15 Reserved.
32	20	--	4	binary	Reserved.
36	24	SMF75CYC	4	packed	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.
40	28	SMF75MVS	8	EBCDIC	MVS software level (consists of an acronym and the version, release, and modification level - ZVvvrrmm).
48	30	SMF75IML	1	binary	Indicates the type of processor complex on which data measurements were taken. Value Meaning 3 9672, zSeries 49 31 SMF73PRF 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 7 Reserved.
50	32	SMF75PTN	1	binary	PR/SM partition number of the partition that wrote this record.
51	33	SMF75SRL	1	binary	SMF record level change number (X'6B' for z/OS V2R1 RMF). This field enables processing of SMF record level changes in an existing release.
52	34	SMF75IET	8	char	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).
60	3C	SMF75LGO	8	binary	Offset GMT to local time (STCK format).
68	44	SMF75RAO	4	binary	Offset to reassembly area relative to start of RMF product section.
72	48	SMF75RAL	2	binary	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.
74	4A	SMF75RAN	2	binary	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 (SMF75RAO) and length (SMF75RAL) are only valid if SMF75RAN = 1. A reassembly area is only present in broken records.
76	4C	SMF75OIL	2	binary	Original interval length as defined in the session or by SMF (in seconds).
78	4E	SMF75SYN	2	binary	SYNC value in seconds.
80	50	SMF75GIE	8	binary	Projected gathering interval end (STCK format) GMT time.
88	58	SMF75XNM	8	EBCDIC	Sysplex name as defined in parmlib member COUPLExx.
96	60	SMF75SNM	8	EBCDIC	System name for current system as defined in parmlib member IEASYSxx SYSNAME parameter. Reassembly Area:
Reassembly Area(Offset from beginning of record: SMF75PRS + SMF75PRL)
0	0	SMF75RBR	2	binary	Total number of broken records built from the original large record.
2	2	SMF75RSQ	2	binary	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 SMF75RBR.
4	4	SMF75RIO	4	binary	Offset to first reassembly information block relative to start of reassembly area header.
8	8	SMF75RIL	2	binary	Length of reassembly information block.
10	A	SMF75RIN	2	binary	Number of reassembly information blocks (same value as SMF75TRN in header section).
12	C	--	4	binary	Reserved. Reassembly Area Information Block:
Reassembly Area Information Block(Offset from beginning of record: SMF75PRS + SMF75PRL + SMF75RIO)
0	0	SMF75RNN	2	binary	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.
2	2	SMF75RPP	2	binary	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 SMF75RNN 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.
Page Data Set Data Section(Offset from beginning of record: SMF75PSS)
0	0	SMF75DSN	44	EBCDIC	Page data set name.
44	2C	SMF75PST	1	binary	Page space type Bit Meaning When Set 0 PLPA 1 COMMON 2 Reserved 3 LOCAL 4 Reserved 5 Data set unusable 6 Data set brought online during interval 7 Data set taken offline during interval.
45	2D	SMF75FL2	1	binary	Flags Bit Meaning When Set 0 Data set accepts VIO pages 1 Data set is on a multiple exposure device 2 Data set is on a device with an alternate control unit 3 SMF75DEV contains a valid device name 4-7 Reserved.
46	2E	--	1	binary	Reserved.
47	2F	SMF75TYP	4	binary	Unit type.
51	33	SMF75CHA	2	binary	Device number in the form hhhh (hex digits).
53	35	SMF75VOL	6	EBCDIC	Volume serial number.
59	3B	--	5	binary	Reserved.
64	40	SMF75SLA	4	binary	Total number of slots contained within the page data set.
68	44	SMF75MXU	4	binary	Maximum number of slots used.
72	48	SMF75MNU	4	binary	Minimum number of slots used.
76	4C	SMF75AVU	4	binary	Average number of slots used.
80	50	SMF75BDS	4	binary	Number of unusable slots.
84	54	SMF75USE	4	binary	Number of samples indicating data set was being used by ASM.
88	5A	SMF75REQ	4	binary	The value is the same as SMF75USE.
92	5C	SMF75SIO	4	binary	Number of I/O requests for the data set.
96	60	SMF75PGX	4	binary	Number of pages transferred to or from page data set.
100	64	SMF75DEV	8	EBCDIC	Device name (blank if device name cannot be determined).
108	6C	SMF75CU	8	EBCDIC	Control unit name (blank if control unit name cannot be determined).

The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.

Spectrum SMF Writer - the 4GL SMF Report Writer.

SMF Type 75 Record

This table shows the record layout for type 75 SMF records (RMF Page Data Set Activity - z/OS 2.1).

It's easy to report on SMF 75 data!

This table shows the record layout for type 75 SMF records
(RMF Page Data Set Activity - z/OS 2.1).