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

[Cornelia Huck]

On Fri, 24 Jan 2020 10:01:58 +0000
Stefan Hajnoczi <address@hidden> 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 performance is improved.

Same comment regarding other transports.

> 
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
>  hw/block/virtio-blk.c          | 6 +++++-
>  hw/core/machine.c              | 1 +
>  hw/virtio/virtio-blk-pci.c     | 9 ++++++++-
>  include/hw/virtio/virtio-blk.h | 2 ++
>  4 files changed, 16 insertions(+), 2 deletions(-)

Reviewed-by: Cornelia Huck <address@hidden>