On 26/07/2019 15:47, Vincent Guittot wrote: [...] >> If CPU0 runs the load balancer, balancing utilization would mean pulling >> 2 tasks from CPU1 to reach the domain-average of 40%. The good side of this >> is that we could save ourselves from running some newidle balances, but >> I'll admit that's all quite "finger in the air". > > Don't forget that scheduler also selects a cpu when task wakeup and > should cope with such situation >
Right, although I'm not sure even the slow wakeup path is any good at balancing utilization. >> >>>> happen, but it'd be a shame to repeatedly do this when we could >>>> preemptively balance utilization. >>>>
