Real-time snoop status

Abstract

Techniques and apparatus for performing real-time tracking and reporting of snoop activity within a data processing system are described. An example technique includes performing a local snoop operation for multiple processors within a cluster. A snoop tracing message with information associated with the local snoop operation is generated upon determining that the local snoop operation is successful. The snoop tracing message is transmitted to a storage device. Another example technique includes determining a location in memory of a computing system where a fetch request resolves. Information indicating the location in memory of the computing system where the fetch request resolves is encoded within a fetch response. The fetch response is transmitted to a processor. One or more counters within the processor that are used to track snoop activity are incremented based on the encoded information.