This documentation space contains information about PATROL Agents when deployed in a BMC Helix Operations Management environment. If you are a TrueSight Operations Management user, see PATROL Agent 21.3. Open link

Flushing the Agent cache based on the number of data points

The /AgentSetup/prmHistCacheSize configuration variable sets the number of data points allowed in the cache, for a specific parameter, before writing the cache to the history file. For example, if you set the value of prmHistCacheSize to 10, when the agent has collected 10 data points for a parameter it writes the data to the history file.

To turn off history cache and thus turn off recording history, set this variable equal to or less than 1.

Format and type of data

Numeric, data points per parameter

Default value


Minimum and maximum

0, none





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