This is cool. And yes for those considering "serverless" those latencies are real world typical even apart from cold starts ;)

I use httpbench quite a bit. It's replacing CLI tools like ab, siege. And you get programmatic access to concurrent loads.

Building an enterprise-grade front end could actually generate real customers. Is there any chance you'll provide an interface that allows anyone to run any arbitrary uploaded code for testing performance?

Thanks! and Yes - for specific tests you can use FaaSbenchmark. If there is something you believe that other people in our community will find helpful - you can create a pull request. https://github.com/nuweba