O2: A Network Protocol for Music Systems

Table 2

Small message send time (just the destination address and a 32-bit integer) for O2 versus OSC and TCP versus UDP. The same communication was also implemented directly in TCP and UDP without any additional layers, sending only one 32-bit integer per message. Run times are wall time, with all messages between two processes on the same host. Averages from multiple runs are reported. Individual runs vary by ±1.5%.

	UDP		TCP
	Time/Message	Messages/Second	Time/Message	Messages/Second
OSC	29 μs	35,000 s^−1	56 μs	18,000 s^−1
O2	30 μs	34,000 s^−1	28 μs	36,000 s^−1
Direct	22 μs	46,000 s^−1	20 μs	44,000 s^−1