








	*SMF Tools*

SMF Type 99 Record - Subtype 6

This table shows the record layout for type 99 SMF records
(System Resource Manager (SRM) Decisions).

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

Purpose: This record type is written by the SRM component. The records contain:

Performance data for each service class period
Trace codes representing the SRM actions
The data which SRM used to decide which actions to take
The controls SRM is using to manage work.

In addition, subtypes 1 and 9 will be written by the SRM component when running in compatibility mode.

Record 99 has the following subtypes:

Subtype 1 Contains system level data, the trace of SRM actions, and data about resource groups. The SRM actions are recorded in trace codes. All trace codes are described in z/OS MVS Programming: Workload Management Services. A subtype 1 record is written every policy interval.

Subtype 2 Contains data for service classes. A subtype 2 record is written every policy interval for each service class if any period in the service class had recent activity.

Subtype 3 Contains service class period plot data. A subtype 3 record is written every policy interval for each service class if any period in the service class had recent activity and plot data.

Subtype 4 Contains information about a device cluster. A device cluster is a set of service classes that compete to use the same non-paging DASD devices. A subtype 4 record is written every policy interval for each device cluster in the system.

Subtype 5 Contains data about monitored address spaces. A subtype 5 record is written each policy interval for each swapped in monitored address space.

Subtype 6 Contains summary information about each service class period, including the resource control settings for the next policy interval. A subtype 6 record is written each policy interval.

Subtype 7 Contains summary information for the Enterprise Storage Server (ESS) with Parallel Access Volume (PAV) feature. A subtype 7 record is written every third policy interval.

Subtype 8 Contains summary information for LPAR CPU management. A subtype 8 record is written each policy interval, when in LPAR mode.

Subtype 9 Contains summary information for dynamic channel path management. A subtype 9 record is written each policy interval.

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SMF Type 99 Record -- System Resource Manager (SRM) Decisions
Offset (Dec.)	Offset (Hex)	Name	Length	Format	Description
0	0	SMF99S6_ LEN	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	SMF99S6_ SEG	2	binary	Segment descriptor (see record length field).
4	4	SMF99S6_ FLG	1	binary	System indicator: Bit Meaning When Set 0-2 Reserved 3-6 Version indicators* 7 Reserved.*See “Standard SMF Record Header” on page 13-1 for a detailed description.
5	5	SMF99S6_ RTY	1	binary	Record type 99
6	6	SMF99S6_ TME	4	binary	Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10	0A	SMF99S6_ DTE	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	0E	SMF99S6_ SID	4	EBCDIC	System identification (from the SID parameter).
18	12	SMF99S6_ SSID	4	EBCDIC	Sub system identification
22	16	SMF99S6_ TID	2	binary	Record subtype (must be at offset X'16' x).
24	18	SMF99S6_ SDEF_ LEN	4	binary	Length of the self definition section.
Self-Defining Section(Offset from beginning of record: 28)
0	0	SMF99S6_ POF	4	binary	Offset to the product section from the beginning of the record (including RDW).
4	4	SMF99S6_ PLN	2	binary	Length of the product section.
6	6	SMF99S6_ PON	2	binary	Number of the product section.
8	8	SMF99S6_ DOF	4	binary	Offset to data section from beginning of the record (including RDW).
12	C	SMF99S6_ DLN	2	binary	Length of the data section.
14	E	SMF99S6_ DON	2	binary	Number of the data section.
SMF 99 Product Information(Offset from beginning of record: SMF99S6_POF)
0	0	SMF99S6_ VN2	2	binary	Record sub-version. Use to identify changes to the record in the service stream.
2	2	SMF99S6_ RVN	2	binary	Record version number.
4	4	SMF99S6_ PNM	8	EBCDIC	Product name - SRM
12	C	SMF99S6_ SLV	8	EBCDIC	System level from which record was cut (Copied from CVTPRODN).
20	14	SMF99S6_ SNM	8	EBCDIC	System name from which record was cut (Copied from CVTSNAME)
28	1C	SMF99S6_ PFLG	1	binary	Record Flags: Bit Meaning When Set 0 Only a subset of the available data was written to avoid that this record gets larger than 32 KByte 1 Only a subset of the available data is written to this record. The rest follows in subsequent records. This record contains a reassembly area. 2–7 Reserved.
29	1D	--	3	EBCDIC	Reserved.
Subtype 6 - Self Defining Section(Offset from beginning of record: SMF99S6_DOF)
0	0	SMF996CPOF	4	binary	Offset to service class period section.
4	4	SMF996CPLN	2	binary	Length of a service class period section.
6	6	SMF996CPON	2	binary	Number of service class period sections.
Subtype 6 - Period Data Section(Offset from beginning of record: SMF996CPOF)
0	0	SMF996_ ECLASS_ NAME	8	EBCDIC	External class name. For an externally-defined service class, this is a name defined in the service definition. For a server period, this name will of the form . For system service classes, this name will be , , , , or .
8	8	SMF996_ PER_ NUM	2	binary	Period number within class.
10	A	SMF996_ GOALTYPE	1	binary	Goal type: Value Meaning 0 System, SYSSTC, or server goal 1 Short response time 2 Long response time 3 Velocity 4 Discretionary
11	B	SMF996_ PERCENTILE	1	binary	Response time goal percentile. (Zero if period does not have a percentile response time goal.)
12	C	SMF996_ ICLASS_ NAME	8	EBCDIC	Internal service class name. Same as SMF996_ECLASS_NAME, except for discretionary periods, in which case the name will be of the form .
20	14	SMF996_ GOALVAL	4	binary	Goal value. If a response time goal, this value will be the goal in milliseconds. If a velocity goal, this value will be the velocity percentage. If a discretionary goal, system goal, or if this is a server period, this value will be zero.
24	18	SMF996_ IMPOR	2	binary	Importance of service class period.
26	1A	SMF996_ DP	1	binary	Dispatching priority of period for next policy interval.
27	1B	SMF996_ IODP	1	binary	I/O priority of period for next policy interval.
28	1C	SMF996_ MPLI	2	binary	MPL in-target for next policy interval.
30	1E	SMF996_ MPLO	2	binary	MPL out-target for next policy interval.
32	20	SMF996_ RUA	4	binary	Average number of ready address spaces over last policy interval, scaled by a factor of 16.
36	24	SMF996_ PSPT	4	binary	Time swapped out address spaces in period are protected from being swapped to aux for next policy interval. This value is expressed in units of 1.024 milliseconds.
40	28	SMF996_ PSITAR	4	binary	Storage isolation target for next policy interval for each address space in period. (Valid only for work with short response time goals, in which case the value is the number of frames protected. Otherwise, this value is zero.)
44	2C	SMF996_ LOCAL_ PI	4	binary	Local performance index, times 100.
48	30	SMF996_ SYSPLEX_ PI	4	binary	Sysplex performance index, times 100.
52	34	SMF996_ SERVER_ DATA_ OF	4	binary	Offset to server section from beginning of record (including RDW). Only valid if period is a server period. There will be one server section entry for each different external service class to which server address spaces in this server period were originally classified.
56	38	SMF996_ SERVER_ DATA_ LN	2	binary	Length of each server section entry.
58	3A	SMF996_ SERVER_ DATA_ ON	2	binary	Number of server section entries.
60	3C	SMF996_ PSERV	4	binary	Service accumulated during interval.
64	40	SMF996_ PISERV	4	binary	zAAP service accumulated during interval.
68	44	SMF996_ PSSERV	4	binary	Accumulated SUP service.
72	48	SMF996_ Time_ at_ PDP_ Using	4	binary	Time at PDP using samples during last interval.
76	4C	SMF996_ Time_ at_ PDP	4	binary	Time at PDP accumulator during last interval.
80	50	SMF996_ FLAGS	1	binary	Flags. Bit Meaning When Set 0 Period is managed by EWLM performance data. 1–7 Reserved.
81	51	--	3	EBCDIC	Reserved.
84	54	SMF996_ EWLM_ LOCAL_ PI	4	binary	EWLM local PI.
88	58	SMF996_ EWLM_ GLOBAL_ PI	4	binary	EWLM global PI.
Subtype 6 - Server Section(Offset from beginning of record: SMF996_SERVER_DATA_OF)
0	0	SMF99_ S6_ SERVER_ CLASS_ NAME	8	EBCDIC	Name of the service class to which at least one of the server address spaces in the server period represented by the subtype 6 entry was originally classified.
8	8	SMF99_ S6_ SERVER_ PER_ NUM	4	binary	Period number within class.

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 99 Record - Subtype 6

This table shows the record layout for type 99 SMF records (System Resource Manager (SRM) Decisions).

It's easy to report on SMF 99 data!

This table shows the record layout for type 99 SMF records
(System Resource Manager (SRM) Decisions).