Re: [PATCH v2 3/4] virtio-blk: default num_queues to -smp N

2020-01-27 Thread Cornelia Huck
On Fri, 24 Jan 2020 10:01:58 + Stefan Hajnoczi wrote: > Automatically size the number of request virtqueues to match the number > of vCPUs. This ensures that completion interrupts are handled on the > same vCPU that submitted the request. No IPI is necessary to complete > an I/O request and

[PATCH v2 3/4] virtio-blk: default num_queues to -smp N

2020-01-24 Thread Stefan Hajnoczi
Automatically size the number of request virtqueues to match the number of vCPUs. This ensures that completion interrupts are handled on the same vCPU that submitted the request. No IPI is necessary to complete an I/O request and performance is improved. Signed-off-by: Stefan Hajnoczi --- hw/b