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SubjectRe: [PATCH] make blk_mq_map_queues more friendly for cpu topology

On 03/27/2019 05:17 PM, luferry wrote:
> Actually, I just bought one vm from public cloud provider and run into this problem.
> after reading code and compare pci device info, I reproduce this scenario.

There is lack of vector issue when number of queues is more than maxcpus as well.

I was going to send out patch to fix that specific case on virtio side.

BTW, is your VM's virtio mmio based or pci based?

As mentioned in previous email, when I was playing with firecracker by amazon,
the virtio-blk is mmio based. Not sure if that would lead to the lack of vector

Dongli Zhang

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