lookahead time

English

Noun

lookahead time (countable and uncountable, plural lookahead times)

1. (physics, sciences) The elapsed time of a subject reaching a given point.
   • 2011, Yoky Matsuoka, Hugh Durrant-Whyte, Jose Neira, Robotics: Science and Systems VI, page 31:

     Lookahead distance is computed by measureing the distance from the vehicle to the farthest point ahead on the current lane estimate, and lookahead time is computed by dividing the lookahead distance by the vehicle's instantaneous speed.

2. (computing, software) The amount of time from the point when an upcoming process is scheduled and resources are allocated for it, to the moment when it executes.
   • 2013, Olov Schelén, Stephen Pink, “Sharing Resources through Advance Reservation Agents”, in Andrew T. Campbell, Klara Nahrstedt, editor, Building QoS into Distributed Systems, page 265:

     The risk of preemption can be varied by changing the lookahead time when making immediate admission control.

   • 2024, Nick Morgan, JavaScript Crash Course, page 221:

     If the lookahead time is too short, then delays to the scheduling code could mean that the scheduled time is already in the past by the time the library is ready to schedule the notes .