Re: [PATCH] O12.2int for interactivity

Con Kolivas
2003-08-14T06:53:41Z

On Thu, 14 Aug 2003 16:09, William Lee Irwin III wrote:
> William Lee Irwin III wrote:

> "scale" on which scheduling events should happen, and as tasks become
> more cpu-bound, they have longer timeslices, so that two cpu-bound
> tasks of identical priority will RR very slowly and have reduced
> context switch overhead, but are near infinitely preemptible by more
> interactive or short-running tasks.

Actually the timeslice handed out is purely dependent on the static priority,
not the priority it is elevated or demoted to by the interactivity estimator.
However lower priority tasks (cpu bound ones if the estimator has worked
correctly) will always be preempted by higher priority tasks (interactive
ones) whenever they wake up.

Con