[abhirag]

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.

[0]: https://pranitha.rs/posts/rust-ipc-ping-pong/

[nh2]

Interesting that on Linux Unix Domain Sockets are not faster than TCP.

People often say that the TCP stack overhead is high but this benchmark does not confirm that.

[jcelerier]

I'm curious about the benchmark. In my own for another network IPC library (https://GitHub.com/ossia/libossia) Unix sockets were consistently faster than the alternatives when sending the same payloads.

[billywhizz]

the linux results are for a vm running on macos. not sure how useful that is. i certainly wouldn't draw any wider conclusions from them without trying to reproduce yourself. pretty sure they will be very different on bare metal.

[billywhizz]

i couldn't resist reproducing on bare metal linux (8th gen core i5, ubuntu 22.04):

  cargo run --release -- -n 1000000 --method unixstream
  cargo run --release -- -n 1000000 --method tcp

~9μs/op for unixstream, ~14μs/op for 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.

[pranitha_m]

Our prod env is comprised of cloud VMs so tried to replicate that. Have some benchmarks from prod env, will share those.

[hardwaresofton]

Excellent writeup! I performed just about the same test, but I didn't see 13M rps in my testing, shared memory went up to about 1M.

That said, I made sure to include serialization/deserialization (and JSON at that) to see what a realistic workload might be like.

[pranitha_m]

Thanks! I am updating the benchmarks to take into account the different payload sizes as we speak, maybe we can discuss the difference in our methodologies and results then? I'll drop you a mail once updated.

[elBoberido]

Sweet. Can we link to your benchmark from the main iceoryx2 readme?

[pranitha_m]

Alright, I am updating the benchmarks for the newest release, I'll open a PR once done.

[elBoberido]

Thanks, really appreciate it.