A method finds an error in a computer program. A sequence of machine instructions performed by a processor is recorded as trace data. Further, at least one event is selected from a plurality of events. In addition, an operating system instruction address is determined for the at least one event. Further, at least a portion of the trace data is searched for the operating system instruction address. The execution time for an operating system instruction stored in the operating system instruction address is determined. The execution time is searched through in the database to find task related data. The task related data is displayed.