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

["Wei, Gang" <gang.wei@xxxxxxxxx>]

Jan Beulich wrote:
>>>> "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()).  

Good sugguestion, thanks.

Jimmy
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