From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Marvin Liu <yong.liu@intel.com>, tiwei.bie@intel.com
Cc: zhihong.wang@intel.com, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v5 0/9] support in-order feature
Date: Mon, 2 Jul 2018 10:33:28 +0200 [thread overview]
Message-ID: <6dea99a3-4b26-be52-e524-94de3f4fda64@redhat.com> (raw)
In-Reply-To: <20180702135642.52577-1-yong.liu@intel.com>
On 07/02/2018 03:56 PM, Marvin Liu wrote:
> In latest virtio-spec, new feature bit VIRTIO_F_IN_ORDER was introduced.
> When this feature has been negotiated, virtio driver will use
> descriptors in ring order: starting from offset 0 in the table, and
> wrapping around at the end of the table. Vhost devices will always use
> descriptors in the same order in which they have been made available.
> This can reduce virtio accesses to used ring.
>
> Based on updated virtio-spec, this series realized IN_ORDER prototype
> in virtio driver. Due to new [RT]x path added into selection, also add
> two new parameters mrg_rx and in_order into virtio-user vdev parameters
> list. This will allow user to configure feature bits thus can impact
> [RT]x path selection.
>
> Performance of virtio user with IN_ORDER feature:
>
> Platform: Purely
> CPU: Intel(R) Xeon(R) Platinum 8160 CPU @ 2.10GHz
> DPDK baseline: 18.05
> Setup: testpmd with vhost vdev + testpmd with virtio vdev
>
> +--------------+----------+----------+---------+
> |Vhost->Virtio |1 Queue |2 Queues |4 Queues |
> +--------------+----------+----------+---------+
> |Inorder |12.0Mpps |24.2Mpps |26.0Mpps |
> |Normal |12.1Mpps |18.5Mpps |18.9Mpps |
> +--------------+----------+----------+---------+
>
> +--------------+----------+----------------+---------+
> |Virtio->Vhost |1 Queue |2 Queues |4 Queues |
> +--------------+----------+----------------+---------+
> |Inorder |13.8Mpps |10.7 ~ 15.2Mpps |11.5Mpps |
> |Normal |13.3Mpps |9.8 ~ 14Mpps |10.5Mpps |
> +--------------+----------+----------------+---------+
>
> +---------+----------+----------------+----------------+
> |Loopback |1 Queue |2 Queues |4 Queues |
> +---------+----------+----------------+----------------+
> |Inorder |7.4Mpps |9.1 ~ 11.6Mpps |10.5 ~ 11.3Mpps |
> +---------+----------+----------------+----------------+
> |Normal |7.5Mpps |7.7 ~ 9.0Mpps |7.6 ~ 7.8Mpps |
> +---------+----------+----------------+----------------+
>
> v5:
> - disable simple Tx when in-order negotiated
> - doc update
>
> v4:
> - disable simple [RT]x function for ARM
> - squash doc update into relevant patches
> - fix git-check-log and checkpatch errors
>
> v3:
> - refine [RT]x function selection logic
> - fix in-order mergeable packets index error
> - combine unsupport mask patch
> - doc virtio in-order update
> - fix checkpatch error
>
> v2:
> - merge to latest dpdk-net-virtio
> - not use in_direct for normal xmit packets
> - update available ring for each descriptor
> - clean up IN_ORDER xmit function
> - unmask feature bits when disabled in_order or mgr_rxbuf
> - extract common part between IN_ORDER and normal functions
> - update performance result
>
> Marvin Liu (9):
> vhost: advertise support in-order feature
> net/virtio: add in-order feature bit definition
> net/virtio-user: add unsupported features mask
> net/virtio-user: add mrg-rxbuf and in-order vdev parameters
> net/virtio: free in-order descriptors before device start
> net/virtio: extract common part for in-order functions
> net/virtio: support in-order Rx and Tx
> net/virtio: add in-order Rx/Tx into selection
> net/virtio: advertise support in-order feature
>
> doc/guides/nics/virtio.rst | 23 +-
> drivers/net/virtio/virtio_ethdev.c | 32 +-
> drivers/net/virtio/virtio_ethdev.h | 7 +
> drivers/net/virtio/virtio_pci.h | 8 +
> drivers/net/virtio/virtio_rxtx.c | 639 ++++++++++++++++--
> .../net/virtio/virtio_user/virtio_user_dev.c | 30 +-
> .../net/virtio/virtio_user/virtio_user_dev.h | 4 +-
> drivers/net/virtio/virtio_user_ethdev.c | 47 +-
> drivers/net/virtio/virtqueue.c | 8 +
> drivers/net/virtio/virtqueue.h | 2 +
> lib/librte_vhost/socket.c | 6 +
> lib/librte_vhost/vhost.h | 10 +-
> 12 files changed, 736 insertions(+), 80 deletions(-)
>
Applied to dpdk-next-virtio/master.
Thanks,
Maxime
next prev parent reply other threads:[~2018-07-02 8:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-02 13:56 Marvin Liu
2018-07-02 8:33 ` Maxime Coquelin [this message]
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 1/9] vhost: advertise " Marvin Liu
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 2/9] net/virtio: add in-order feature bit definition Marvin Liu
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 3/9] net/virtio-user: add unsupported features mask Marvin Liu
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 4/9] net/virtio-user: add mrg-rxbuf and in-order vdev parameters Marvin Liu
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 5/9] net/virtio: free in-order descriptors before device start Marvin Liu
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 6/9] net/virtio: extract common part for in-order functions Marvin Liu
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 7/9] net/virtio: support in-order Rx and Tx Marvin Liu
2018-07-02 16:41 ` Ferruh Yigit
2018-07-02 16:52 ` Ferruh Yigit
2018-07-02 16:53 ` Maxime Coquelin
2018-07-02 16:57 ` Ferruh Yigit
2018-07-03 1:36 ` Liu, Yong
2018-07-03 10:36 ` Ferruh Yigit
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 8/9] net/virtio: add in-order Rx/Tx into selection Marvin Liu
2018-07-02 11:24 ` Maxime Coquelin
2018-07-02 12:41 ` Maxime Coquelin
2018-07-02 15:18 ` Maxime Coquelin
2018-07-03 1:40 ` Liu, Yong
2018-07-02 13:56 ` [dpdk-dev] [PATCH v5 9/9] net/virtio: advertise support in-order feature Marvin Liu
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