Re: [PATCH v2] sched/fair: update scale invariance of PELT

From: Peter Zijlstra
Date: Tue Apr 11 2017 - 06:53:38 EST



Lets go back to the unscaled version:

running idle
|*********|---------|

With the current code, that would effectively end up like (again
assuming 50%):

running idle
|*_*_*_*_*|---------|


Time stays the same, but we add extra idle cycles.