On Mon, May 22, 2017 at 01:48:14PM -0700, Rohit Jain wrote: > The patch introduces capacity awarness in scheduler (CAS) which avoids > CPUs which might have their capacities reduced (due to IRQ/RT activity) > when trying to schedule threads (on the push side) in the system. This > awareness has been added into the fair scheduling class. > > It does so by, using the following algorithm: > -------------------------------------------------------------------------- > 1) As in rt_avg the scaled capacities are already calculated. > > 2) This scaled capacity is normalized and mapped into buckets.
Why? > 3) Any CPU which lies below the 80th percentile in terms of percentage > capacity available is considered as a low capacity CPU. Random number; can we do better? What does existing code do?
