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Re: [PATCH v2 4/4] vhost-user-blk: default num_queues to -smp N


From: Cornelia Huck
Subject: Re: [PATCH v2 4/4] vhost-user-blk: default num_queues to -smp N
Date: Mon, 27 Jan 2020 14:17:10 +0100

On Fri, 24 Jan 2020 10:01:59 +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.

Ok, that one is pci-only anyway.

> 
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
>  hw/block/vhost-user-blk.c          | 6 +++++-
>  hw/core/machine.c                  | 1 +
>  hw/virtio/vhost-user-blk-pci.c     | 6 ++++++
>  include/hw/virtio/vhost-user-blk.h | 2 ++
>  4 files changed, 14 insertions(+), 1 deletion(-)

Reviewed-by: Cornelia Huck <address@hidden>




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