Re: [Xen-devel] [PATCH 4/4] xen: sched: simplify (and speedup) checking soft-affinity

2017-10-04 Thread George Dunlap
On 09/15/2017 06:35 PM, Dario Faggioli wrote: > The fact of whether or not a vCPU has a soft-affinity > which is effective, i.e., with the power of actually > affecting the scheduling of the vCPU itself rarely > changes. Very, very rarely, as compared to how often > we need to check for the same

[Xen-devel] [PATCH 4/4] xen: sched: simplify (and speedup) checking soft-affinity

2017-09-15 Thread Dario Faggioli
The fact of whether or not a vCPU has a soft-affinity which is effective, i.e., with the power of actually affecting the scheduling of the vCPU itself rarely changes. Very, very rarely, as compared to how often we need to check for the same thing (basically, at every scheduling decision!). That