








	*SMF Tools*

SMF Type 99 Record - Subtype 9

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.

It's easy to report on SMF 99 data!

We have a low-cost 4GL report writer especially for SMF files. It's called Spectrum SMF Writer.

Spectrum SMF Writer handles the difficult SMF record parsing for you automatically. You just specify which fields you want to see.

Spectrum SMF Writer also converts the arcane date and time fields and reformats them into an attractive report.

Plus, Spectrum SMF Writer can export SMF data as comma delimited files to use on your PC.

SMF Type 99 Record -- System Resource Manager (SRM) Decisions
Offset (Dec.)	Offset (Hex)	Name	Length	Format	Description
0	0	SMF99S9_ 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	SMF99S9_ SEG	2	binary	Segment descriptor (see record length field).
4	4	SMF99S9_ 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	SMF99S9_ RTY	1	binary	Record type 99
6	6	SMF99S9_ TME	4	binary	Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10	0A	SMF99S9_ 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	SMF99S9_ SID	4	EBCDIC	System identification (from the SID parameter).
18	12	SMF99S9_ SSID	4	EBCDIC	Sub system identification
22	16	SMF99S9_ TID	2	binary	Record subtype (must be at offset X'16' x).
24	18	SMF99S9_ SDEF_ LEN	4	binary	Length of the self definition section.
Self-Defining Section(Offset from beginning of record: 28)
0	0	SMF99S9_ POF	4	binary	Offset to the product section from the beginning of the record (including RDW).
4	4	SMF99S9_ PLN	2	binary	Length of the product section.
6	6	SMF99S9_ PON	2	binary	Number of the product section.
8	8	SMF99S9_ DOF	4	binary	Offset to data section from beginning of the record (including RDW).
12	C	SMF99S9_ DLN	2	binary	Length of the data section.
14	E	SMF99S9_ DON	2	binary	Number of the data section.
SMF 99 Product Information(Offset from beginning of record: SMF99S9_POF)
0	0	SMF99S9_ VN2	2	binary	Record sub-version. Use to identify changes to the record in the service stream.
2	2	SMF99S9_ RVN	2	binary	Record version number.
4	4	SMF99S9_ PNM	8	EBCDIC	Product name - SRM
12	C	SMF99S9_ SLV	8	EBCDIC	System level from which record was cut (Copied from CVTPRODN).
20	14	SMF99S9_ SNM	8	EBCDIC	System name from which record was cut (Copied from CVTSNAME)
28	1C	SMF99S9_ 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 9 - Self Defining Section(Offset from beginning of record: SMF99S9_DOF)
0	0	SMF999_ IO_ SUBSYSTEM_ DATA_ OFFSET	4	binary	Offset to IO Subsystem data section from beginning of record (including RDW)
4	4	SMF999_ IO_ SUBSYSTEM_ DATA_ LENGTH	2	binary	Length of IO Subsystem Data section
6	6	SMF999_ IO_ SUBSYSTEM_ DATA_ NUMBER	2	binary	Number of IO Subsytem Data sections
8	8	SMF999_ IOSUB_ PLOT_ OF	4	binary	Offset to IO Subsystem plots
12	C	SMF999_ IOSUB_ PLOT_ LN	2	binary	Length of IO Subsystem plots
14	E	SMF999_ IOSUB_ PLOT_ ON	2	binary	Number of IO Subsystem plots
16	10	SMF999_ CHANNEL_ DATA_ OF	4	binary	Offset to Channel Data section
20	14	SMF999_ CHANNEL_ DATA_ LN	2	binary	Length of Channel Data section
22	16	SMF999_ CHANNEL_ DATA_ ON	2	binary	Number of Channel Data section
Subtype 9 - IO Subsystem Data Section(Offset from beginning of record: SMF999_IO_SUBSYSTEM_DATA_OFFSET)
0	0	SMF999_ FLAG1	1	binary	IO subsystem flags Bit Meaning When Set 0 Indicates that the I/O subsystem is eligible for dynamic management. 1 Indicates CONFIG change has been made. 2 Indicates that no point was plotted this interval. If this indicator is on, SMF99_IOSUB_INTERVAL_VELOCITY is not relevant. 3 Indicates that no channel data was written this interval. This indicator is set when the structure for the channel data does not exist. 4 Indicates that while calculating the busy to connect ratio an entry ratio was converted from >1.6 to 1.3. 5-7 Reserved.
1	1	SMF999_ CONTROL_ FLAGS	1	binary	Control flags Bit Meaning When Set 0 Indicates that this SMF 99 subtype 9 record represents a situation that caused us not to create valid SMF 99 subtype 9 data. Identify the condition by checking one of the following indicators. Data in this SMF 99 subtype 9 is invalid other than possibly the SMF999_IOSUB_INDEX (valid when empty slot or old slot entry). 1 Indicates that registry data does not exist. 2 Indicates that the WLM LPAR Cluster structure is not connected. 3 Indicates that the SMF 99 buffer for the subtype 9 data was not processed from the previous interval. 4 Indicates empty slot entry. 5 Indicates old slot entry. 6 Indicates unknown reason. 7 Reserved.
2	2	SMF999_ ROW_ INDEX	2	binary	Channel path data row index
4	4	--	1	EBCDIC	Reserved
5	5	SMF999_ DIAG_ TOKEN	3	binary	Internal diagnosis data
8	8	SMF999_ TOKEN_ NED	32	EBCDIC	Token NED of I/O subsystem
40	28	SMF999_ IOSUB_ TARGET_ VELOCITY	4	binary	I/O subsystem target velocity set by WLM
44	2C	SMF999_ IOSUB_ VELOCITY	4	binary	The actual I/O velocity of the subsystem
48	30	SMF999_ IOSUB_ AVG_ SVC_ TIME	4	binary	Average service time
52	34	SMF999_ IOSUB_ CHECK_ POINT_ TIME	4	binary	Average service time of the subsystem when SRM set a target
56	38	SMF999_ IOSUB_ INDEX	2	binary	IO Subsystem Index
58	3A	SMF999_ LCU_ SQNUMBER	2	binary	LCU sequence number
60	3C	SMF999_ CONTROL_ UNIT_ ARRAY	16	binary	Control unit numbers, SMF999_CONTROL_UNITS(1-8), associated with LCU
76	4C	SMF999_ IOSUB_ PROJECTED_ VELOCITY	4	binary	Projected velocity to be expected if a change is to be made
80	50	SMF999_ IOSUB_ INTERVAL_ VELOCITY	4	binary	The 10 second I/O velocity that is used to plot a point.
84	54	SMF999_ AVG_ BUSY_ TO_ CONNECT_ RATIO	4	binary	The average busy to connect time ratio calculated by WLM during the 10 second copy interval.
88	58	SMF999_ CLEAR_ INTERVAL	2	binary	Clear interval index
90	5A	SMF999_ CSS_ NUMBER	1	binary	Channel subsystem identifier
91	5B	--	1	binary	Reserved
92	5C	SMF999_ IOSUB_ INTERVALCHANNELWAITTIME	4	HEX	Interval Channel-Wait-Time
96	60	SMF999_ TIMESTAMP_ SYSTEM	8	EBCDIC	Identifies the system that made a CONFIG change
Subtype 9 - I/O Subsystem Plot Section(Offset from beginning of record: SMF999_IOSUB_PLOT_OF)
0	0	SMF99_ IOSUB_ BW	4	binary	Bucket width
4	4	SMF99_ IOSUB_ LSTX	4	binary	Last plotted x bucket
8	8	--	4	binary	Reserved
12	C	SMF99_ IOSUB_ POINTS_ OF	4	binary	Offset of point entries
16	10	SMF99_ IOSUB_ POINTS_ ON	2	binary	Number of point entries
18	12	SMF99_ IOSUB_ POINTS_ LN	2	binary	Length of a point entry
Subtype 9 - Channel Path Data Entry Section(Offset from beginning of record: SMF999_CHANNEL_DATA_OF)
0	0	SMF999_ CHANNEL_ ID	1	binary	I/O Subsystem channel ID.
1	1	SMF999_ CHANNEL_ TYPE	1	binary	I/O Subsystem channel type.
2	2	SMF999_ CHANNEL_ FLAG	1	binary	I/O Subsystem channel flags bit indicate if channel is managed: Bit Meaning When Set 0 Indicates that this channel can be managed by WLM. 1-7 Reserved.
3	3	--	1	EBCDIC	Reserved
4	4	SMF999_ CHANNEL_ UTILIZATION	4	binary	I/O Subsystem Channel utilization for the current data collection interval.
8	8	SMF999_ CHANNEL_ PROJECTED_ UTILIZATION	1	binary	Projected I/O Subsystem Channel utilization for the current data collection interval (percentage)
9	9	SMF999_ CHANNEL_ PROJ_ CURRENT_ PATH_ LOAD	1	binary	Percent use for path projected for the current configuration during the calibration pass.
10	A	SMF999_ CHANNEL_ #SYSTEMS_ CONTRIBUTED	2	binary	Count of systems that have contributed to this channel data.
12	C	SMF999_ CHANNEL_ PORT_ BUSY_ COUNT	4	binary	Channel port busy count.

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 9

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).