On Fri, Aug 04, 2017 at 10:00:47PM +0100, Richard W.M. Jones wrote: > I read your slides about scsi-mq and it seems like a significant > benefit to large machines, but could the out of the box defaults be > made more friendly for small memory machines? The default inumber of queues and queue depth and thus memory usage is set by the LLDD. Try to reduce the can_queue value in virtio_scsi and/or make sure you use the single queue variant in your VM (which should be tunable in qemu).
