Re: [RFC PATCH v1 00/11] Create fast idle path for short idle periods

Arjan van de Ven
2017-07-17T19:55:35Z

On 7/17/2017 12:53 PM, Thomas Gleixner wrote:
> On Mon, 17 Jul 2017, Arjan van de Ven wrote:
>> On 7/17/2017 12:23 PM, Peter Zijlstra wrote:
>>> Of course, this all assumes a Gaussian distribution to begin with, if we
>>> get bimodal (or worse) distributions we can still get it wrong. To fix
>>> that, we'd need to do something better than what we currently have.
>>>
>>
>> fwiw some time ago I made a chart for predicted vs actual so you can sort
>> of judge the distribution of things visually
>
> Predicted by what?

this chart was with the current linux predictor

http://git.fenrus.org/tmp/timer.png is what you get if you JUST use the next timer ;-)
(which way back linux was doing)