Sending 1000 i32s (async): Comparison Average time (ms) # Senders 0.4 0.6 0.8 1.0 1.2 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 ThingBuf async_std::channel::bounded futures::channel::mpsc tokio::sync::mpsc