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SMF Type 99 Record (Subtype 11) - z/OS 1.13

This table shows the record layout for type 99 SMF records
(System Resource Manager (SRM) Decisions - z/OS 1.13).

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.

Subtype 10 Contains information about dynamic processor speed changes. A subtype 10 record is written for every processor speed change.

Subtype 11 Contains information about Group Capacity Limits. A subtype 11 record is written every 5 minutes.

Subtype 12 Contains information about HiperDispatch. This information is for IBM internal use only.

Subtype 13 Contains information about HiperDispatch. This information is for IBM internal use only.

Subtype 14 Contains information about HiperDispatch. This information is for IBM internal use only.

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SMF Type 99 Record -- System Resource Manager (SRM) Decisions - z/OS 1.13
Offset (Dec.)	Offset (Hex)	Name	Length	Format	Description
0	0	SMF99S11_ 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	SMF99S11_ SEG	2	binary	Segment descriptor (see record length field).
4	4	SMF99S11_ 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	SMF99S11_ RTY	1	binary	Record type 99
6	6	SMF99S11_ TME	4	binary	Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10	0A	SMF99S11_ 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	SMF99S11_ SID	4	EBCDIC	System identification (from the SID parameter).
18	12	SMF99S11_ SSID	4	EBCDIC	Sub system identification
22	16	SMF99S11_ TID	2	binary	Record subtype (must be at offset X'16' x).
24	18	SMF99S11_ SDEF_ LEN	4	binary	Length of the self definition section.
Self-Defining Section(Offset from beginning of record: 28)
0	0	SMF99S11_ POF	4	binary	Offset to the product section from the beginning of the record (including RDW).
4	4	SMF99S11_ PLN	2	binary	Length of the product section.
6	6	SMF99S11_ PON	2	binary	Number of the product section.
8	8	SMF99S11_ DOF	4	binary	Offset to data section from beginning of the record (including RDW).
12	C	SMF99S11_ DLN	2	binary	Length of the data section.
14	E	SMF99S11_ DON	2	binary	Number of the data section.
SMF 99 Product Information(Offset from beginning of record: SMF99S11_POF)
0	0	SMF99S11_ VN2	2	binary	Record sub-version. Use to identify changes to the record in the service stream.
2	2	SMF99S11_ RVN	2	binary	Record version number.
4	4	SMF99S11_ PNM	8	EBCDIC	Product name - SRM
12	C	SMF99S11_ SLV	8	EBCDIC	System level from which record was cut (Copied from CVTPRODN).
20	14	SMF99S11_ SNM	8	EBCDIC	System name from which record was cut (Copied from CVTSNAME)
28	1C	SMF99S11_ 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 11 - Self Defining Section Subtype 11 contains information about Group Capacity Limits. $ A subtype 11 record is written every 5 minutes. (Offset from beginning of record: SMF99S11_DOF)*
0	0	SMF99B_ CAPTY_ GROUP_ DATA_ OFFSET	4	binary	Offset to group capacity data section from beginning of record, included RDW.
4	4	SMF99B_ CAPTY_ GROUP_ DATA_ LENGTH	2	binary	Length of group capacity data section.
6	6	SMF99B_ CAPTY_ GROUP_ DATA_ NUMBER	2	binary	Number of group capacity data sections.
8	8	SMF99B_ CEC_ SERVICE_ DATA_ OFFSET	4	binary	Offset to CEC service data section from beginning of record.
12	C	SMF99B_ CEC_ SERVICE_ DATA_ LENGTH	2	binary	Length of CEC service data section.
14	E	SMF99B_ CEC_ SERVICE_ DATA_ NUMBER	2	binary	Number of CEC service data sections.
Subtype 11 - CEC service data section The CEC service data section consists of an array containing $ a variable number of entries. The number of entries is in $ field SMF99B_CEC_SERVICE_DATA_NUMBER. $ Each entry contains the fields shown below: (Offset from beginning of record: SMF99B_CAPTY_GROUP_DATA_OFFSET)*
0	0	SMF99B_ CAPACITYGROUPNAME	8	EBCDIC	Name of the capacity group. All partitions that have the same capacity group name build the capacity group.
8	8	SMF99B_ GroupProcessorDispatchTime	8	binary	The dispatch time accumulated over all processors of all LPARs belonging to the capacity group.
16	10	SMF99B_ GroupWeight	4	binary	The weight accumulated over all LPARs belonging to the capacity group.
20	14	SMF99B_ Group_ Msu_ Limit	4	binary	The group limit in million service units per hour (MSU).
24	18	SMF99B_ ImgMsuLimit	4	binary	Capacity in millions of service units per hour, which is derived from defined and group capacity.
28	1C	SMF99B_ CecNumberOfPartitions	4	binary	Number of partitions, returned in the output area of the Diagnose 204 hardware instruction.
32	20	SMF99B_ GrpNumberOfPartitions	4	binary	Number of partitions in the same group as this partition.
36	24	SMF99B_ AvgUnused	4	binary	Average unused rate in millions of service units per hour. This is a long term average.
40	28	--	16	binary	Reserved.
56	38	SMF99B_ DonatedServiceUnits	4	binary	Indicates that service units have been donated by one or more group members during the last complete five minute intervals.
60	3C	SMF99B_ ReceiverWeight	4	binary	The weight accumulated over all receivers of donated service units.
64	40	SMF99B_ ImgBaseMsu	4	binary	Capacity in MSU that belongs to this image. The capacity depends on the ratio between the current weight and the group weight.
68	44	SMF99B_ ServiceTableIndex	4	binary	Index to the current entry for the SMF99B_ImgService field.
72	48	SMF99B_ GroupJoinedTod	8	binary	Timestamp when this LPAR joined its group.
80	50	--	1244	binary	Reserved.
Subtype 11 - Processor Speed Change Section (old or new)(Offset from beginning of record: SMF99B_CEC_SERVICE_DATA_OFFSET)
0	0	SMF99B_ ImgName	8	EBCDIC	Name of logical partition.
8	8	SMF99B_ ImgSystemName	8	EBCDIC	Image system name as specified in hardware instruction DIAGNOSE 300 or by external means. Value is zero if no system name is declared.
16	10	SMF99B_ ImgGroupName	8	EBCDIC	Name of the capacity group. All partitions which have the same CapacityGroupName build the capacity group.
24	18	SMF99B_ ImgService	192	binary	Service units accumulated for an image of the CEC. 216 D8 SFM99B_ImgProcessorDispatchTime 8 binary Sum of processor dispatch times for this logical partition in microseconds. Updated every policy adjustment interval.
224	E0	SMF99B_ ImgInitialWght	2	binary	Initial weight of the logical partition.
226	E2	SMF99B_ ImgCurrentWght	2	binary	Current weight of the logical partition.
226	E2	--	4	binary	Reserved

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 11) - z/OS 1.13

This table shows the record layout for type 99 SMF records (System Resource Manager (SRM) Decisions - z/OS 1.13).

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 - z/OS 1.13).