Quick benchmark utility against a local/remote server for Cap'n Proto. The testing setup is against a DigitalOcean droplet with 4vCPUs and 8GB of RAM in Frankfurt with a ping latency of ~220ms.

It appears on a single-core case, only about 3 or 4 RPCs may be made per second. A concurrent case with 16 workers allows for 64 RPCs at most to be made per second. The average is around ~50 RPCs per second.

Each request/response individually holds a randomly-generated 600 byte payload. It appears under this case, gRPC with its HTTP/2 framing protocol is a clear winner in the case of networking over high-latency environments.

A simple Makefile is provided to build and upload either the single/concurrent case to some remote server via rsync, with the endpoint of the server being specified as an environment variable ENDPOINT.

Logs of number of received responses and sent requests are periodically emitted to stdout every second.