On 4/5/19 3:59 PM, Keith Busch wrote: > Managed interrupts can not migrate affinity when their CPUs are offline. > If the CPU is allowed to shutdown before they're returned, commands > dispatched to managed queues won't be able to complete through their > irq handlers. > > Introduce per-hctx reference counting so we can block the CPU dead > notification for all allocated requests to complete if an hctx's last > CPU is being taken offline. What does this do to performance? We're doing a map per request... -- Jens Axboe
