Start/notes.ini Parameters/EVENT_POOL_SIZE

EVENT_POOL_SIZE

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Parameter: EVENT_POOL_SIZE
Short description: Size of the event pool (memory for the Event task); increase on large servers with many monitoring events.

Profile

Parameter
EVENT_POOL_SIZE
Category
Performance / Memory
Component
Server
Available since
R6
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5
GUI equivalent
notes.ini only (no GUI)
Possible values
Bytes (default 1,048,576 = 1 MB); 4–16 MB sensible on heavily monitored servers

Description

The Event task manages server events (statistics, threshold breaches, console events) in an internal pool. EVENT_POOL_SIZE defines its size. On servers with many event generators, statistic probes, or extensive monitoring configurations, the default of 1 MB can be too small – in that case, individual events are dropped or reported in the log as "Event pool full".
For typical production environments, 4–16 MB is sufficient.

Example configuration

EVENT_POOL_SIZE=8388608

Notes & pitfalls

  • Value in bytes.
  • Too small: events are lost – visible in the console / statrep.nsf.
  • Too large: only a slight RAM reservation, no performance penalty.
  • Complemented by Event_NotesLog, event generators, and events4.nsf.
  • The change takes effect only after a restart of the Event task (restart task event).