Abstract: Snoop response logic on a system bus is configured to detect on the system bus requests to access data at a target address with data exclusivity from at least one of a plurality of wake-and-go engines. The snoop response logic is further configured to determine a winning wake-and-go engine from the at least one wake-and-go engine that obtains a lock on the target address and generate a combined snoop response. The combined snoop response identifies the winning wake-and-go engine. The snoop response logic sends the combined snoop response to the at least one wake-and-go engine on the system bus. Each remaining wake-and-go engine within the at least one wake-and-go engine places an entry in its respective wake-and-go storage array to spin on a lock for the target address.