If you're interested in this topic, I highly suggest some of the talks and papers about the LMAX Disruptor [0] and Martin Thompson's latest project Aeron [1]. It targets the JVM, but the lessons are generally applicable since I don't think Concord/Aria are open source.
We are using it right now as the foundation for a new business administration platform.
It's even more ridiculous in .NET due to enhancements relative to value types:
https://medium.com/@ocoanet/improving-net-disruptor-performa...
In .NET6, this is potentially one of the fastest ways to serialize an arbitrary # of threads.