Maximum CPU usage of the task in the last load interval duration. The task share of the elapsed time as a percentage of total CPU time is recorded for every one second. The maximum of these one second samples is calculated over a period of load interval duration. This counter enable to detect the spikes in cpu usage . After every one second, older one sec sample will be discarded and new sample will be added to the set . After addition of new sample value , maximum value over one second intervals in a interval duration will be calculated . Unit is percentage. Range is from 0 to maxcore*100