Application event tracing

A non-transitory machine-readable storage medium including instructions which, when executed by a processor, cause the processor to:

• identify a first event listener of a plurality of event listeners as a significant event listener associated with an application;
• add a dummy action handler to a second listener of the plurality of event listeners wherein the second event listener of the plurality of event listeners comprises a non-significant event listener;
• receive an action associated with the first event listener;
• generate a composite event sequence comprising the first event listener and the second event listener;
• measure a performance metric associated with the action, and
• create a log record comprising the performance metric, wherein the log record is associated with the composite event sequence.

A computer-implemented method comprising:

• adding a dummy action handler to each of a plurality of event listeners associated with an application;
• generating a composite event sequence comprising at least one first event listener in response to receiving a first user action associated with the application, wherein the first user action triggers at least one predefined start event associated with the at least one first event listener of the plurality of event listeners;
• adding at least one second event listener of the plurality of event listeners to the composite event sequence based on the dummy action handler of the at least one second event listener;
• measuring a respective performance metric for the at least one first event listener and the at least one second event listener, wherein the respective performance metric comprises a time to complete the at least one first event listener and the at least one second event listener;
• closing the composite event sequence in response to at least one of the following:
• an expiration of an idle timer and a receiving of a second user action triggering the at least one predefined start event;
• determining whether the composite event sequence comprises a significant event listener, wherein the significant event listener comprises a non-default and non-dummy action handler;
• in response to determining that the composite event sequence comprises the significant event listener:
• computing a final performance metric, wherein the final performance metric comprises a total time to complete the user action according to the respective performance metrics for the at least one first event listener and the at least one second event listener, and
• creating a log record comprising the final performance metric, wherein the log record is associated with the composite event sequence;
• and
• in response to determining that the composite event sequence does not comprise the significant event listener, discarding the respective performance metrics.