Peter J. Denning Alive
Invented the working-set model for virtual memory — why paging thrashes and how to prevent it.
19251950197520002025
Invented the working-set model (1968) — the theory virtual memory runs on — and wrote 'Operating Systems Theory' with Coffman.\n\nRan the CS field's professional organization (ACM president); the 'working set' is every paging algorithm's basis.