An atomic bus system creates a bottleneck in bus arbitration. In that any request a processor makes will probably have some time before it is served in which nothing else is able to be done on the bus. Since the bus is used by all processors and is a valuable resource, this is wasting a lot of important time.
An atomic bus system creates a bottleneck in bus arbitration. In that any request a processor makes will probably have some time before it is served in which nothing else is able to be done on the bus. Since the bus is used by all processors and is a valuable resource, this is wasting a lot of important time.