Messages in this thread | | | Subject | Re: [PATCH] make blk_mq_map_queues more friendly for cpu topology | From | Dongli Zhang <> | Date | Wed, 27 Mar 2019 17:39:16 +0800 |
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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.
https://lore.kernel.org/lkml/e4afe4c5-0262-4500-aeec-60f30734b4fc@default
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 issue.
Dongli Zhang
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