Re: [Xen-devel] Optimize credit scheduler __runq_tickle to reduce IPIs

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> "Wei, Gang" <gang.wei@xxxxxxxxx> 19.03.10 09:22 >>>
>2. if first_cpu() was used as the way to choose the target among all possible 
>idle cpus, will it cause overall unbalanced cpu utilization? i.e. cpu 0 > cpu 
>1 > ... > cpu N

This can be easily avoided by using cycle_cpu() and tracking the last used CPU 
on e.g. a per-pCPU basis (similar to idle_bias used in _csched_cpu_pick()).

Jan


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