Abstract: Embodiments of the present disclosure present devices, methods, and computer readable medium related to identifying, generating, and presenting diagnostic data corresponding to devices from which the diagnostic data was obtained. In some embodiments, the diagnostic data may include log file data associated with a common error, operational metrics, or the like. Commonality may be identified based on call path signatures. Call path signatures may be generated for log files and compared to one another to determine matches. Matched log files may be grouped or otherwise associated with a common error (e.g., a hanging error). A user interface is provided to view the diagnostic data associated with a common error. The disclosed techniques provide an intelligent method for visualizing performance changes and/or identifying errors in applications.