This is a nexus on managing resources thru capabilities. I usually use the term “resource” to refer to what is sometimes called “hardware resource”. Some piece of software, to serve some particular purpose, will require some part of the computer hardware for some period of time. Here we include transmission capacity but elsewhere we concentrate on storage elements and computing elements. (Keykos has a vague plane to account for channel utilization. Those plans were not carried out.)
In Keykos meters are the primitive mechanism to supply and account for CPU time.