Topology updates and NUMA-level sched domains
Brice Goglin
Brice.Goglin at inria.fr
Wed Apr 8 20:32:01 AEST 2015
Le 07/04/2015 21:41, Peter Zijlstra a écrit :
> No, that's very much not the same. Even if it were dealing with hotplug
> it would still assume the cpu to return to the same node.
>
> But mostly people do not even bother to handle hotplug.
>
You said userspace assumes the cpu<->node relation is a boot-time fixed
one, and hotplug breaks this. How do you expect userspace to handle
hotplug? Is there a convenient way to be notified when a CPU (or memory)
is unplugged?
thanks
Brice
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