Documentation -> Manuals -> Manual 3.2 -> Core Events

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Events are exported by the OpenSIPS core through the Event Interface.

1.  Threshold limit exceeded

Event: E_CORE_THRESHOLD

This event is triggered when a particular action takes longer than a specific threshold. It can be raised when a MySQL or DNS query takes too long, or a SIP message processing goes beyond a specific limit. For more information please see this post.

Parameters:

• source: the source of the event: mysql module, core (for DNS or message processing warnings).
• time: the amount of time (in microseconds) spent by the operation
• extra: extra information, depending on the source of the event

2.  Private memory threshold exceeded

Event: E_CORE_PKG_THRESHOLD

This event is triggered when the private memory usage goes above a threshold limit, specified by the event_pkg_threshold the core parameter. It warns external applications about low values of free private memory.

Parameters:

• usage: the percentage of private memory usage. Can have values between event_pkg_threshold and 100.
• threshold: the event_pkg_threshold specified in the script.
• used: the amount of private memory used.
• size: the total amount of private memory.
• pid: the pid of the process that raises the event.

3.  Shared memory threshold exceeded

Event: E_CORE_SHM_THRESHOLD

This event is triggered when the shared memory usage goes above a threshold limit, specified by the event_shm_threshold the core parameter. It warns external applications about low values of free shared memory.

Parameters:

• usage: the percentage of private memory usage. Can have values between event_shm_threshold and 100.
• threshold: the event_shm_threshold specified in the script.
• used: the amount of private memory used.
• size: the total amount of private memory.

4.  Process Auto-Scaling (upscale and downscale)

Event: E_CORE_PROC_AUTO_SCALE

This event is triggered whenever a new process is created (forked) or a process is terminated due the auto-scaling logic. In order to have this event trigger, the auto-scaling must be enabled in your configuration.

Parameters:

• group_type: the type/name of the scaling group (UDP/TCP/TIMER).
• group_filter: the filter (usually the socket/interface for UDP) of the scaling group.
• group_load: the load over the scaling group.
• scale: "up" or "down"
• process_id: the process ID (at OpenSIPS level) of the scaled (up or down) process.
• pid: the PID (OS level) of the scaled (up or down) process.