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@brief performance logging
--log.performance
If this option is set, performance-related info messages will be logged via the regular logging mechanisms. These will consist of mostly timing and debugging information for performance-critical operations.
Currently performance-related operations are logged as INFO messages.
Messages starting with prefix [action] indicate that an instrumented
operation was started (note that its end won't be logged). Messages with
prefix [timer] will contain timing information for operations. Note that
no timing information will be logged for operations taking less time than
1 second. This is to ensure that sub-second operations do not pollute
logs.
The contents of performance-related log messages enabled by this option are subject to change in future versions of ArangoDB.