> relating request rates (in requests per second) to compute requirements (in CPU seconds per request) The exist SI unit which specifically applies to queueing

> relating request rates (in requests per second) to compute requirements (in CPU seconds per request) The exist SI unit which specifically applies to queueing problems is the erlang, a unit originally used in telecommunications. Applied to computers, it would translate to CPU use per request. https://en.wikipedia.org/wiki/Erlang_(unit) https://en.wikipedia.org/wiki/Erlang_(unit) It's considered to be a dimensionless unit (according to wiki), implying that CPUs and requests are also dimensionless.