!!Resources -> [[Resources.Documentation | Documentation]] -> [[Resources.DocsCookbooks | CookBooks]] -> Core Events

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

This documentation is for OpenSIPS '''trunk/devel''' version.

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!!! 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 [[http://lists.opensips.org/pipermail/users/2011-February/016918.html | this]] post.

Parameters:
* '''source''': the source of the event: mysql module, core (for DNS or message processing warnings).
* '''time''': the number of micro-seconds the limit has been exceeded
* '''extra''': extra information, depending on the source of the event

!!! 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.

Note: If the '''event_pkg_threshold''' is not specified or 0, then this event is disabled.

!!! 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.

Note: If the '''event_shm_threshold''' is not specified or 0, then this event is disabled.

* '''extra''': extra information, depending on the source of the event