linux-kernel - Re: [PATCH v1 0/2] virtio-mmio: support multiple interrupt vectors

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Message-ID: <CA+=e4K6K4BS6vhURemYfEYz4zeEEq5Z7YQ1C=vH97WWNJhJe9Q@mail.gmail.com>
Date:   Wed, 31 Jul 2019 12:10:54 +0800
From:   李菲 <lifei.shirley@...edance.com>
To:     Sergio Lopez <slp@...hat.com>
Cc:     Jason Wang <jasowang@...hat.com>, Pawel Moll <pawel.moll@....com>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Fam Zheng <zhengfeiran@...edance.com>,
        linux-kernel@...r.kernel.org,
        Xiongchun Duan <duanxiongchun@...edance.com>
Subject: Re: [PATCH v1 0/2] virtio-mmio: support multiple interrupt vectors

Hi Sergio,

Considering your implementing virtio-mmio v2 in Qemu, please help to give some
suggestions on this patch series. Thanks :)

For web, this link:
https://www.spinics.net/lists/kernel/msg3195667.html may help.

Have a nice day
Fei

On Fri, Jul 19, 2019 at 9:31 PM Fei Li <lifei.shirley@...edance.com> wrote:
>
> Hi,
>
> This patch series implements multiple interrupt vectors support for
> virtio-mmio device. This is especially useful for multiqueue vhost-net
> device when using firecracker micro-vms as the guest.
>
> Test result:
> With 8 vcpus & 8 net queues set, one vhost-net device with 8 irqs can
> receive 9 times more pps comparing with only one irq:
> - 564830.38 rxpck/s for 8 irqs on
> - 67665.06 rxpck/s for 1 irq on
>
> Please help to review, thanks!
>
> Have a nice day
> Fei
>
>
> Fam Zheng (1):
>   virtio-mmio: Process vrings more proactively
>
> Fei Li (1):
>   virtio-mmio: support multiple interrupt vectors
>
>  drivers/virtio/virtio_mmio.c | 238 +++++++++++++++++++++++++++++++++++--------
>  1 file changed, 196 insertions(+), 42 deletions(-)
>
> --
> 2.11.0
>