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

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Message-Id: <20190719133135.32418-1-lifei.shirley@bytedance.com>
Date:   Fri, 19 Jul 2019 21:31:33 +0800
From:   Fei Li <lifei.shirley@...edance.com>
To:     linux-kernel@...r.kernel.org
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>,
        Fei Li <lifei.shirley@...edance.com>
Subject: [PATCH v1 0/2] virtio-mmio: support multiple interrupt vectors

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