Tags

Profinity keeps a rolling in-memory history of recent tag values, which is used for dashboard charts and for the recent-history queries described under Application Config. The Tags tab sets the limits on that buffer, so that it stays bounded on a busy instance. The tag history is held in memory only. Restarting Profinity clears it, and it refills as new values arrive.

Saving changes on any System Configuration tab restarts Profinity. Refer to System Configuration for what to expect.

Parameter	Type	Default	Description
Max points per tag	Whole number	1500	The most samples kept for a single tag. When it is exceeded the oldest samples for that tag are removed.
Max total points (all tags)	Whole number	100000	The most samples kept across all tags.
Share eviction budget across tags	Checkbox	Ticked	When enabled, the total limit is enforced by dropping the oldest samples across all tags, rather than per tag.
Point TTL (minutes)	Whole number	60	Samples older than this are pruned.
Max dynamically tracked tags	Whole number	200	The most tags tracked on demand, such as by a dashboard that has just opened. When it is exceeded the least recently used are dropped.
Dynamic track inactivity TTL (minutes)	Whole number	45	A dynamically tracked tag that nobody has used for this long is removed.

TTL stands for time to live.

Whole number values must be at least 1. A value of 0 makes Profinity use the default. The maximums are 10,000,000 points per tag, 100,000,000 points in total, 1,000,000 dynamically tracked tags, and 100,080 minutes for the TTL settings.