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Summary

Resource Measurement Facility (RMF) is IBM's strategic performance management product for z/OS. RMF gathers and reports on z/OS resource usage. Mainframe users can configure RMF to store data in SMF records which z/IRIS streams and processes into open-source compatible metrics in real-time. z/IRIS metrics should be stored in a data sink (e.g. InfluxDB) that is connected to visualization and analysis software (e.g. Grafana).



Supported RMF SMF records

SMF TypeRecord descriptionSupport status
70Processor ActivitySupported
71Paging Activity2021
72Workload Activity, Storage Data and Serialization Delay2021
73Channel Path Activity2021
74Activity of Several Resources2021
75Page Data Set Activity2021
76Trace Activity2021
77Enqueue Activity2021
78Virtual Storage and I/O Queuing Activity2021
79Monitor II activity2021

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.