A computer implemented method, apparatus and program product for analyzing performance data particular to an algorithm using a profiler algorithm, and automatically associates the performance data with a reference clock time. The performance data may be automatically associated with a tag, also associated with the reference clock time. Using the tag, the performance data may be associated with a portion of the algorithm. For instance, the tag may be associated with a corresponding tag associated with the algorithm. User input may be received that designates both the tag and an additional tag associated with the program code. Aspects may identify tags in the performance data that correspond to both the tag and additional tag of program code. The portion of the performance data bounded by the identified tags in the performance data may be retrieved and displayed to a user. In this manner, the performance data may be automatically associated with a portion of algorithm.