Patent ID: 8326968

Claim:
An apparatus comprising: a first logic circuitry to generate a signal to cause each of a plurality of communication links of a transmit agent to transmit a unique identifier over an interconnect; a second logic circuitry, responsive to the generated signal, to transmit data packets that comprise the unique identifier over the interconnect prior to one or more other data packets that await transmission over the interconnect; a third logic circuitry to determine a difference between a location of a first event and a location of the unique identifier, wherein the unique identifier is a nearest marker to the first event; and a fourth logic circuitry to capture one or more traces, wherein each trace is to correspond to data transmitted by one of the plurality of communication links, wherein the third logic circuitry is to determine a location of a second event based on an offsetting of the location of the first unique identifier in a corresponding trace of the captured one or more traces, wherein the interconnect comprises one or more serial links and wherein the one or more serial links adhere to one or more cache coherent protocols.