Re: [PATCH 3/4] sched: introduce synchronized idle injection

From: Peter Zijlstra
Date: Wed Nov 18 2015 - 05:36:01 EST


On Wed, Nov 18, 2015 at 09:36:22AM +0100, Ingo Molnar wrote:
> What will such throttling do to latencies, as observed by user-space tasks? What's
> the typical expected frequency of the throttling frequency that you are targeting?

The default has 5ms (iirc) of forced idle, so depending on what you do,
noticeable to outright painful.
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