= P =
prime time n.
[from TV programming] Normal high-usage
hours on a system or network. Back in the days of big timesharing
machines `prime time' was when lots of people were competing for
limited cycles, usually the day shift. Avoidance of prime time was
traditionally given as a major reason for night mode hacking.
The term fell into disuse during the early PC era, but has been
revived to refer to times of day or evening at which the Internet
tends to be heavily loaded, making Web access slow. The hackish
tendency to late-night hacking runs has changed not a bit.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.