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.
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%? That is every sampling interval - If the load does not change by 5% - it tries to check of threshold - 5% every sampling period. and lowers it every sampling period. thanks, /Ryan On Thu, Sep 26, 2013 at 9:13 PM, Viresh Kumar <viresh.ku...@linaro.org> wrote: > > On 26-Sep-2013 8:50 PM, "Ryan" <ryanphilip...@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.. _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
