[Scheduler] CFS - What happens to each task's slice if nr_running * min_granularity > sched_latency?

Rik van Riel riel at surriel.com
Mon Apr 6 21:41:21 EDT 2020

On Thu, 2020-04-02 at 22:10 -0400, Evan T Mesterhazy wrote:

> Here's the code for calculating an individual process's slice. It
> looks like the weighting formula is used here regardless of whether
> the period has been expanded.
> If that's the case, doesn't that mean that some processes will still
> get a slice that's smaller than the min_granularity?

That is exactly what will happen. You figured out what
the code does.

Generally this behavior is not a real problem, since
people expect low priority tasks to run slower.

All Rights Reversed.
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