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Resource Measurement Facility (RMF) is IBM's strategic product for performance management on z/OS. RMF gathers and reports on resource usage. z/IRIS processes RMF SMF records in real-time and streams them to a database integrated with your enterprise analysis tools.


Supported RMF SMF records

SMF Type

Record description

Support status

70

Processor Activity

Supported

71

Paging Activity

2021

72

Workload Activity, Storage Data and Serialization Delay

2021

73

Channel Path Activity

2021

74

Activity of Several Resources

2021

75

Page Data Set Activity

2021

76

Trace Activity

2021

77

Enqueue Activity

2021

78

Virtual Storage and I/O Queuing Activity

2021

79

Monitor II activity

2021

CPU activity

IBM's RMF SMF record type 70 gather usage and sampling data at user customizable intervals. z/IRIS streams and parses these records to create metrics applicable for ultimate use in open-source visualization and reporting software. 

The use distinction between tags/labels and fields applies to time series database management systems that provide indexing, filtering and grouping of metrics and data. Users can logically group or filter the metrics using the tags or labels listed in the table below.

General tags/labels for grouping

Type

Key

SMF source

tag/label

timestamp

(SMF70DTE+SMF70TME).as Timestamp

tag/label

sysplex

SMF70XNM

tag/label

system

SMF70SNM

tag/label

processor_family

SMF70MOD

tag/label

cpc_model

SMF70MDL

tag/label

logical_partition

SMF70SPN

tag/label

os_instance

SMF70STN

tag/label

msu_limit

SMF70MSU

tag/label

capacity_group

SMF70GNM

tag/label

tenant_resource_group

SMF70_TRG_NAME

% LPAR/MVS busy time metric

Metric Type

Name

Source

tag

serial_number

SMF70SER

tag

type

SMF70TYP

tag

id

SMF70CID

field

lpar_busy_time_perc

Logical core/cpu online percentage of time dispatched by LPAR

field

mvs_busy time_perc

Logical processor online percentage of time busy

In-ready work unit queue distribution metric

This metrics includes the following SMF fields: SMF70U00, SMF70U01,...,SMF70U15

Metric Type

Name

Source

field

waiting_work_units_0

Percentage of samples where work units were immediately dispatchable

⋮16 fields in total

field

waiting_work_units_10 (use the upper range)

Percentage of samples where 41-60 work units were not immediately dispatchable

⋮16 fields in total

field

waiting_work_units_150+

Percentage of samples where more than 150 work units were not immediately dispatchable

field

contention

Processor contention

IBM documents that a value 60% or more implies contention.