Currently, I use the provided test_server and test_client to run benchmarks between instances in EC2 in the same region. Over the course of my testing, I've been able to consistently maintain throughputs of over 1 Million messages per second, which includes time for the server to deserialize a sample payload of data.
There are also some benchmark tests in the test suite, however by default they run local to local, which is not necessarily a great representation of network performance.
When running the test_server with a GOMAXPROCS of 8 listening on a single socket, and running 16 test_clients processes each writing to the servers socket as fast as they can with the same 110 byte protobuffs payload in a single go routine, I'm able to achieve the following throughput:
Average Messages per Second: 1122358.274390244
Maximum Messages per Second 1342711
Minimum Messages per Second 939818
Average Bytes per Second 123459410.18292683
Average MegaBytes per Second 117.74006861012157
Average Megabits per Second 941.9205488809725
Visually, this looks like so
