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SMF Type 99 Record (Subtype 5) - 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)
NameLengthFormatDescription
00SMF99S5_
LEN
2binary
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.
22SMF99S5_
SEG
2binary
Segment descriptor (see record length field).
44SMF99S5_
FLG
1binary
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.
55SMF99S5_
RTY
1binary
Record type 99
66SMF99S5_
TME
4binary
Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
100ASMF99S5_
DTE
4packed
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.
140ESMF99S5_
SID
4EBCDIC
System identification (from the SID parameter).
1812SMF99S5_
SSID
4EBCDIC
Sub system identification
2216SMF99S5_
TID
2binary
Record subtype (must be at offset X'16' x).
2418SMF99S5_
SDEF_
LEN
4binary
Length of the self definition section.
Self-Defining Section
(Offset from beginning of record: 28)
00SMF99S5_
POF
4binary
Offset to the product section from the beginning of the record (including RDW).
44SMF99S5_
PLN
2binary
Length of the product section.
66SMF99S5_
PON
2binary
Number of the product section.
88SMF99S5_
DOF
4binary
Offset to data section from beginning of the record (including RDW).
12CSMF99S5_
DLN
2binary
Length of the data section.
14ESMF99S5_
DON
2binary
Number of the data section.
SMF 99 Product Information
(Offset from beginning of record: SMF99S5_POF)
00SMF99S5_
VN2
2binary
Record sub-version. Use to identify changes to the record in the service stream.
22SMF99S5_
RVN
2binary
Record version number.
44SMF99S5_
PNM
8EBCDIC
Product name - SRM
12CSMF99S5_
SLV
8EBCDIC
System level from which record was cut (Copied from CVTPRODN).
2014SMF99S5_
SNM
8EBCDIC
System name from which record was cut (Copied from CVTSNAME)
281CSMF99S5_
PFLG
1binary
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.
291D--3EBCDIC
Reserved.
Subtype 5 - Self Defining Section
(Offset from beginning of record: SMF99S5_DOF)
00SMF99ANAM8EBCDIC
Address space name
88SMF99ACNM8EBCDIC
Service class to which the address space belongs.
1610SMF99APNUM4binary
Period number that the address space is in.
2014SMF99APCS4binary
Protective central storage target, in frames.
2418SMF99ARCS4binary
Restrictive central storage target, in frames.
281CSMF99APPS4binary
Protective processor storage target, in frames.
3220SMF99ARPS4binary
Restrictive processor storage target, in frames.
3624SMF99CPLT20EBCDIC
Central storage plot. Mapped by SMF99_S5_CPLT_MAP.
5638SMF99PPLT20EBCDIC
Processor storage plot. Mapped by SMF99_S5_PPLT_MAP.
764CSMF99ASID2binary
Address space ID.
784ESMF99A_
EXTERNAL_
CLASS_
NAME
8EBCDIC
The name of the external class with which the address space is associated.
8656SMF99_
S5_
FLAGS
1binary
Flags. Bit Meaning When Set 0 Storage is protected at this instant. 1 Storage protection assigned to space by classification rule. 2 Indicates that storage critical housekeeping was the last to set the storage target for central storage. 3 Indicates that storage critical housekeeping was the last to set the storage target for processor storage. 4 Indicates that policy adjustment was the last to set the storage target for central storage. 5 Indicates that policy adjustment was the last to set the storage target for processor storage. 6-7 Reserved
8757SMF99_
AS_
IO_
Mgmt_
Support_
Data
2binary
I/O management support data.
8959--1EBCDIC
Reserved.
Subtype 5 - Processor Storage Plot Section Map
(Offset from beginning of record: SMF99S5_DOF + 36)
00SMF99_
PPLT_
BW
4binary
Size of each x bucket width. X is the address space size in frames.
44SMF99_
PPLT_
LSTX
4binary
Last plotted x bucket index. * 4 binary Reserved.
12CSMF99_
PPLT_
POINTS_
OF
4binary
Offset of point entries.
1610SMF99_
PPLT_
POINTS_
ON
2binary
Number of point entries.
1812SMF99_
PPLT_
POINTS_
LN
2binary
Length of a point entry.
Subtype 5 - Central Storage Plot Section Map
(Offset from beginning of record: SMF99S5_DOF + 56)
00SMF99_
CPLT_
BW
4binary
Size of each x bucket width. X is the address space size in frames.
44SMF99_
CPLT_
LSTX
4binary
Last plotted x bucket index. * 4 binary Reserved.
12CSMF99_
CPLT_
POINTS_
OF
4binary
Offset of point entries.
1610SMF99_
CPLT_
POINTS_
ON
2binary
Number of point entries.
1812SMF99_
CPLT_
POINTS_
LN
2binary
Length of a point entry.
Subtype 5 - Plot with One Curve - Point Entry Section
(Offset from beginning of record: SMF99_PPLT_POINTS_OF)
00SMF99_
PLOT_
XVAL
4binary
X value of point plotted in a bucket.
44SMF99_
PLOT_
YVAL
4binary
Y value of point plotted in a bucket.
Subtype 5 - Plot with Three Curves - Point Entry Section
(Offset from beginning of record: SMF99_CPLT_POINTS_OF)
00SMF99_
3PLOT_
XVAL
4binary
X value of point plotted in a bucket.
44SMF99_
3PLOT_
Y1VAL
4binary
Y value of point plotted on first curve. For the processor storage plot, the first curve is the page-in rate per captured (TCB+SRB) second from auxiliary storage. For the central storage plot, the first curve is the page-in rate per captured (TCB+SRB) second from auxiliary and expanded storage.
88SMF99_
3PLOT_
Y2VAL
4binary
Y value of point plotted on second curve. For the processor storage plot, the second curve is the paging cost in milliseconds per elapsed second for paging from auxiliary storage. For the central storage plot, the second curve is the paging cost in milliseconds per elapsed second for paging from auxiliary and expanded storage.
12CSMF99_
3PLOT_
Y3VAL
4binary
Y value of point plotted on third curve. For the processor storage plot, the third curve is the captured time in milliseconds per elapsed second. For the central storage plot, the third curve is the captured time in milliseconds per elapsed second.

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

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Pacific Systems Group.
All rights reserved.


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