Re: Increased memory usage with scsi-mq

Christoph Hellwig
2017-08-09T16:01:16Z

On Mon, Aug 07, 2017 at 03:07:48PM +0200, Paolo Bonzini wrote:
> can_queue should depend on the virtqueue size, which unfortunately can
> vary for each virtio-scsi device in theory. The virtqueue size is
> retrieved by drivers/virtio prior to calling vring_create_virtqueue, and
> in QEMU it is the second argument to virtio_add_queue.

Why is that unfortunate? We don't even have to set can_queue in
the host template, we can dynamically set it on per-host basis.