On 26-Sep-2013 10:03 PM, "Ryan" <ryanphilips19@googlemail.com> wrote:
>
> Can you explain a little bit, I read somewhere that it is due to ping
> pong. but i was not able to visualize that part.
> How it could happen.

Suppose load is changing between 90 and 99, then due to down diff we will keep running at max freq.. otherwise continuos switching will hqppen..

> also when you say that
>
> "Latest ondemand gov keeps freq proportional to load all the time..
> and switches to max freq directly if load is over 95"
> you mean to say there is no down differential part of 5%?

Not that.. in earlier code we will not inc freq while load is less than up thresh.. but now if load is less than up thresh but greater than last load, we will inc freq by some amount.. and so we end up using middle freqs more now..