At $work we are evaluating different IPC strategies in Rust. My colleague expanded upon 3tilley's work, they have updated benchmarks with iceoryx2 included here[0]. I suppose the current release should perform even better.
People often say that the TCP stack overhead is high but this benchmark does not confirm that.
cargo run --release -- -n 1000000 --method unixstream
cargo run --release -- -n 1000000 --method tcp
unixstream utilizes two cores at ~78% each core, tcp only utilizes ~58% of each core. so there is also something wrong in the benchmarks where blocking is happening and cores are not being fully utilized.
That said, I made sure to include serialization/deserialization (and JSON at that) to see what a realistic workload might be like.