Sorry, I was sloppy. I meant that it generates CPU load somewhere (or I&#x2F;O load, for those OSes where those two are cleanly separated).<p>If you measure the CPU load on half the CPUs that are involved in serving a user, you&#x27;re not really measuring anything. Ditto if you&#x27;re outsourcing (parts of) the backend and not measuring the outsourced service level.