On 26-Sep-2013 8:50 PM, "Ryan" <ryanphilips19@googlemail.com> wrote:
>
> i did not quite understand the down differential part. Can any one explain it.
> What role it plays while scaling down. because if the load is less
> than (upthresold - down_differential)
> it scales down everytime the sample duration. this is what i understood.
>
> thank you.

It is to avoid ping pong of freq.. so we decrease freq when we r sure that freq isn't going above upthresh due to minor correction of load in near future..