Manage Metrics

Runtime Policy

This section configures when to start and how frequently metrics are cacluated. Below the metrics computation will start after 2 minutes on process startup and thereafter every 1 minute.

Example

truncate on start: true
compaction policy:
  frequency: 8
  time unit: HOURS

Attributes

Attribute	Description	Data Type	Required
frequency	Frequency metrics are computed. Minimum 15 second computation cycles	Long Default: 1
startup delay	First compute cycle delay.	Long Default: 5
time unit	Time unit used to set the scheduled processing policy Supported units: SECONDS, MINUTES, HOURS	TimeUnit Default: MINUTES

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Metric Management Attributes

Each metric defintion includes management attributes to control how the metric table is managed throughout the Joule process lifetime. Since Joule uses an in-memory database the size of table needs to be managed

Attribute	Description	Data Type	Required
truncate on start	Truncate the mtric tables on startup	Boolean Default: true
compaction policy
frequency	Frequency table compactions will occur	long Default: 1
time unit	Time unit used to set the scheduled companion policy Supported units: MINUTES and HOURS	TimeUnit Default: HOURS