








	*SMF Tools*

SMF Type 99 Record (Subtype 8) - 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	SMF99S8_ 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	SMF99S8_ SEG	2	binary	Segment descriptor (see record length field).
4	4	SMF99S8_ 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	SMF99S8_ RTY	1	binary	Record type 99
6	6	SMF99S8_ TME	4	binary	Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10	0A	SMF99S8_ 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	SMF99S8_ SID	4	EBCDIC	System identification (from the SID parameter).
18	12	SMF99S8_ SSID	4	EBCDIC	Sub system identification
22	16	SMF99S8_ TID	2	binary	Record subtype (must be at offset X'16' x).
24	18	SMF99S8_ SDEF_ LEN	4	binary	Length of the self definition section.
Self-Defining Section(Offset from beginning of record: 28)
0	0	SMF99S8_ POF	4	binary	Offset to the product section from the beginning of the record (including RDW).
4	4	SMF99S8_ PLN	2	binary	Length of the product section.
6	6	SMF99S8_ PON	2	binary	Number of the product section.
8	8	SMF99S8_ DOF	4	binary	Offset to data section from beginning of the record (including RDW).
12	C	SMF99S8_ DLN	2	binary	Length of the data section.
14	E	SMF99S8_ DON	2	binary	Number of the data section.
SMF 99 Product Information(Offset from beginning of record: SMF99S8_POF)
0	0	SMF99S8_ VN2	2	binary	Record sub-version. Use to identify changes to the record in the service stream.
2	2	SMF99S8_ RVN	2	binary	Record version number.
4	4	SMF99S8_ PNM	8	EBCDIC	Product name - SRM
12	C	SMF99S8_ SLV	8	EBCDIC	System level from which record was cut (Copied from CVTPRODN).
20	14	SMF99S8_ SNM	8	EBCDIC	System name from which record was cut (Copied from CVTSNAME)
28	1C	SMF99S8_ 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 8 - Self Defining Section(Offset from beginning of record: SMF99S8_DOF)
0	0	SMF998_ LD_ DATA_ OFFSET	4	binary	Offset to LPAR data section from beginning of record (including RDW)
4	4	SMF998_ LD_ DATA_ LENGTH	2	binary	Length of a LPAR data section
6	6	SMF998_ LD_ DATA_ NUMBER	2	binary	Number of LPAR data sections
8	8	SMF998_ PT_ DATA_ OFFSET	4	binary	Offset to priority table section from beginning of record (including RDW)
12	C	SMF998_ PT_ DATA_ LENGTH	2	binary	Length of a priority table section
14	E	SMF998_ PT_ DATA_ NUMBER	2	binary	Number of priority table sections
16	10	SMF998_ PC_ DATA_ OFFSET	4	binary	Offset to period CPU section from beginning of record (including RDW)
20	14	SMF998_ PC_ DATA_ LENGTH	2	binary	Length of a period CPU section
22	16	SMF998_ PC_ DATA_ NUMBER	2	binary	Number of period CPU sections
24	18	SMF998_ IMAGE_ CPU_ DATA_ OFFSET	4	binary	Offset to image CPU section, from beginning of record (including RDW)
28	1C	SMF998_ IMAGE_ CPU_ DATA_ LENGTH	2	binary	Length of an image CPU section
30	1E	SMF998_ IMAGE_ CPU_ DATA_ NUMBER	2	binary	Number of image CPU sections
32	20	SMF998_ SYSH_ CPU_ PLOT_ OF	4	binary	Offset to the SYSH CPU plot section, from beginning of record (including RDW)
36	22	SMF998_ SYSH_ CPU_ PLOT_ LN	2	binary	Length of SYSH CPU plot section
38	24	SMF998_ SYSH_ CPU_ PLOT_ ON	2	binary	Number of SYSH CPU plot sections
Subtype 8 - LPAR Data Entry Section(Offset from beginning of record: SMF998_LD_DATA_OFFSET)
0	0	SMF998_ ImageSystemName	8	EBCDIC	Image system name
8	8	SMF998_ ControlFlag1	1	binary	Control flag that indicates why the rest of the data in the LD entry has not been filled in. Bit Meaning When Set 0 Indicates that this is an overflow SMF 99 subtype 8 record for specified system. The appropriate LD data for this system appears in the first SMF 99 subtype 8 record for this system. 1 Indicates that this system does not have DIAG support. 2 Indicates that LPAR CPU Management is not enabled. 3 Indicates that this system issued DIAG and it failed. 4 Indicates that an image entry was not returned via the DIAG interface for this system. 5 Indicates that the image is non-z/OS. (LINUX) 6-7 Reserved.
9	9	SMF998_ SystemNumber	1	binary	System slot number. The source for this value is QUASNUM in IXCYQUAA.
10	A	--	2	EBCDIC	Reserved
12	C	SMF998_ LastSetTime	8	binary	Timestamp in STCK format
20	14	SMF998_ TotalWeight	4	binary	Total weight of the CEC
24	18	SMF998_ NumberOfSharedPhysicalCPUs	1	binary	Total number of shared (non-dedicated) physical CPU configured for the CEC use
25	19	--	3	EBCDIC	Reserved
28	1C	SMF998_ ImageID	1	binary	Image ID of the partition
29	1D	SMF998_ ImageFlags	1	binary	Image Flags Bit Meaning When Set 0 Image is capped by software. 1 Identifies whether WLM should be involved in dynamic LPAR weight management. 2 Identifies whether partition is using shared CPs. 3 Identifies whether partition is using dedicated CPs. 4 Identifies whether partition is capped by installation from console. 5-7 Reserved.
30	1E	--	2	EBCDIC	Reserved
32	20	SMF998_ NumberCpusActive	2	binary	Number of CPUs that are currently active
34	22	SMF998_ AverageCpuUtilization	2	binary	Average CPU utilization
36	24	SMF998_ ImageInitialWeight	2	binary	Image initial weight
38	26	SMF998_ ImageCurrentWeight	2	binary	Image current weight
40	28	SMF998_ ImageMinimumWeight	2	binary	Image minimum weight
42	2A	SMF998_ ImageMaximumWeight	2	binary	Image maximum weight
44	2C	SMF998_ Pro_ Time_ Avail	4	binary	Total processor time available, includes captured time plus wait time
48	30	SMF998_ Service_ Units_ Per_ Second	4	binary	Unweighted CPU service units per second per online CPU that the hardware is capable of
52	34	--	16	EBCDIC	Reserved
68	44	SMF998_ SoftCapMsu	4	binary	Capacity in millions of service units per hour for which the logical partition is licensed.
72	48	--	4	EBCDIC	Reserved
76	4C	SMF998_ PricingManagementWeight	4	binary	Current pricing management weight.
Subtype 8 - Priority Table Entry Section(Offset from beginning of record: SMF998_PT_DATA_OFFSET)
0	0	SMF998_ PTPRTY	2	binary	Dispatch priority
2	2	SMF998_ PTNP	2	binary	New dispatch priority (zero if not changed)
4	4	SMF998_ PTIMDP	4	binary	Initial maximum percentage of processor demanded at priority, initial value before any priority moves or slice changes
8	8	SMF998_ PTPMDP	4	binary	Projected maximum percentage of processor demanded at priority
12	C	SMF998_ PTCPUU	4	binary	CPU using samples at priority
16	10	SMF998_ PTCPUD	4	binary	CPU delay samples at priority
20	14	SMF998_ PTW2UR	4	binary	Wait-to-using ratio at priority (*16)
24	18	SMF998_ PTAPU	4	binary	Actual measured processor used at priority
28	1C	SMF998_ PTPPU	4	binary	Projected processor time to be used at priority
32	20	SMF998_ PTACMD	4	binary	Achievable cumulative max demand for priorities affected by a move
36	24	--	4	binary	Reserved
40	28	SMF998_ PTIMAXD	4	binary	Initial cumulative maximum demand
44	2C	SMF998_ PTWMAXD	4	binary	Projected cumulative maximum demand
48	30	SMF998_ PTIAMTW	4	binary	Initial average mean time to wait
52	34	SMF998_ PTWAMTW	4	binary	Projected average mean time to wait
Subtype 8 - CPU Period Table Entry Section(Offset from beginning of record: SMF998_PC_DATA_OFFSET)
0	0	SMF998_ Service_ Class_ Name	8	EBCDIC	Internal service class name
8	8	SMF998_ Importance	2	binary	Importance
10	A	SMF998_ Period_ Number	2	binary	Period number
12	C	--	4	EBCDIC	Reserved
16	10	SMF998_ Dasd_ Io_ Delay_ Sample	4	binary	Copy of I/O delay samples
20	14	SMF998_ Non_ Idle_ Samp	4	binary	Number of non-idle samples
24	18	SMF998_ Cpu_ Using_ Sample	4	binary	Copy of CPU using samples
28	1C	SMF998_ Cpu_ Delay_ Sample	4	binary	Copy of CPU delay samples
32	20	SMF998_ Wlm_ Queue_ Delay_ Sample	4	binary	Copy of WLM queue delay samples
36	24	SMF998_ Dasd_ Io_ Using_ Sample	4	binary	Copy of DASD I/O using samples
40	28	SMF998_ Max_ Dem_ Per	4	binary	Maximum percentage of processor time demanded (constant across policy adjustment)
44	2C	SMF998_ Pi_ Achieved	4	binary	Performance index achieved, adjusted into range, used to select donors and receivers
48	30	SMF998_ Sysplex_ Pi_ Achieved	4	binary	Sysplex performance index achieved, adjusted into range, used to select donors and receivers
52	34	SMF998_ Service_ Ow	4	binary	Average service over a WLM-defined moving interva
56	38	SMF998_ Mtw_ Adj	4	binary	Mean time to wait adjusted by cccmxmtw
60	3C	SMF998_ Base_ Priority	2	binary	Base dispatching priority
62	3E	SMF998_ Cap_ Num_ Slices	2	binary	Current number of sleep slices, or 0
64	40	SMF998_ Work_ Pro_ Used	4	binary	Working variable for assess for processor used
68	44	SMF998_ Current_ Ach_ Dem_ Per	4	binary	Current achievable demand percentage for the period calculated from the initial PDT fields.
72	48	SMF998_ Ach_ Dem_ Per	4	binary	Working variable for achievable demand percentage
76	4C	SMF998_ Old_ Work_ Pro_ Used	4	binary	Work field computed during phase 1 move
80	50	SMF998_ Proj_ Pi_ Com	4	binary	Unadjusted projected PI for committed actions only, used as base for projections
84	54	SMF998_ Using_ Delta	4	binary	Computed during assessment
88	58	SMF998_ LparMgmt_ Delay_ Delta	4	binary	Delay delta computed by LPAR Mgmt algorithm. This field captures the delay delta for SMF99 recording before it is cleared out.
92	5C	SMF998_ Cpu_ Cap_ Delay_ Sample	4	binary	CPU capping delay sample
96	60	SMF998_ Iosub_ Samples_ Data_ Offset	4	binary	Offset to I/O subsystem samples data from beginning of record (including RDW)
100	64	SMF998_ Iosub_ Samples_ Data_ Length	2	binary	Length of a I/O subsystem samples data section
102	66	SMF998_ Iosub_ Samples_ Data_ number	2	binary	Number of I/O subsystem samples data sections
104	68	SMF998_ Sysplex_ Proj_ Pi_ Com	4	binary	Unadjusted sysplex projected PI for committed actions only, used as base for projections
108	6C	SMF998_ PC_ CSS_ NUMBER	1	binary	Channel subsystem identifier
109	6D	--	11	EBCDIC	Reserved
Subtype 8 - LPAR CPU Data for a Partition in an LPAR Cluster Section(Offset from beginning of record: SMF998_IMAGE_CPU_DATA_OFFSET)
0	0	SMF998_ LC_ Service_ Class_ Name	8	EBCDIC	Internal service class name
8	8	SMF998_ LC_ Period_ Number	2	binary	Period number * 2 binary Reserved
12	C	SMF998_ LC_ Machine_ Percentage	4	binary	Percent of the CEC shared capacity used by the partition either based on its current weight or utilization
16	10	SMF998_ LC_ Max_ Dem_ Per	4	binary	Maximum percentage of processor time demanded by the image during current interval (scaled by 10)
20	14	SMF998_ LC_ LastInt_ Cpu_ Using	4	binary	Last interval CPU using samples count
24	18	SMF998_ LC_ LastInt_ Cpu_ Delay	4	binary	Last interval CPU delay samples count
28	1C	SMF998_ LC_ LastInt_ Non_ Idle	4	binary	Last interval non idle sample count which include using, delay and other
32	20	SMF998_ LC_ Avg_ Cpu_ Using	4	binary	Average CPU using samples count
36	24	SMF998_ LC_ Avg_ Cpu_ Delay	4	binary	Average CPU delay samples count
40	28	SMF998_ LC_ Using_ Delta	4	binary	Using delta
44	2C	SMF998_ LC_ Delay_ Delta	4	binary	Delay delta
48	30	SMF998_ LC_ Work_ Max_ Dem_ Per	4	binary	New maximum percentage of processor time demanded by the image during current interval as a result of weight change (scaled by 10)
52	34	SMF998_ LC_ Work_ Weighted_ Max_ Dem_ Per	4	binary	Maximum percentage of processor time demanded by the image as a result of weight change, with respect to its current machine share (based on weight or utilization)
56	38	SMF998_ LC_ Work_ W2U_ Ratio	4	binary	New W2U ratio due to change in LPAR weight
60	3C	SMF998_ LC_ Pi_ Delta	4	binary	PI delta projection
64	40	SMF998_ LC_ Sysplex_ Pi_ Delta	4	binary	Sysplex PI delta projection
Subtype 8 - SYSH CPU Plot Section(Offset from beginning of record: SMF998_SYSH_CPU_PLOT_OF)
0	0	SMF99_ SYSH_ CPU_ PLOT_ INUM	4	binary	Image number
4	4	SMF99_ SYSH_ CPU_ PLOT_ BW	4	binary	Bucket width
8	8	SMF99_ SYSH_ CPU_ PLOT_ LSTX	4	binary	Last plotted X bucket
12	C	SMF99_ SYSH_ CPU_ PLOT_ POINTS_ OF	4	binary	Offset of point entries
16	10	SMF99_ SYSH_ CPU_ PLOT_ POINTS_ ON	2	binary	Number of point entries
18	12	SMF99_ SYSH_ CPU_ PLOT_ POINTS_ LN	2	binary	Length of a point entry
Subtype 8 - I/O Subsystems Samples Data Section(Offset from beginning of record: SMF99_SYSH_CPU_PLOT_POINTS_OF)
0	0	SMF99_ IOSUB_ Index	2	binary	Subsystem index. This correlates with SMF999_IOSUB_INDEX.
2	2	--	2	binary	Reserved
4	4	SMF99_ IOSUB_ ConnectSamples	2	binary	Connect samples.
6	6	SMF99_ IOSUB_ PendingSamples	2	binary	Pending samples.

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 8) - 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).