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From: Stephen Hemminger <stephen@networkplumber.org>
To: Yang Luan <luan.penny@gmail.com>
Cc: users@dpdk.org
Subject: Re: running DPDK application on Azure
Date: Wed, 13 Apr 2022 08:58:02 -0700
Message-ID: <20220413085802.7506b1f8@hermes.local> (raw)
In-Reply-To: <CAPHT=baPGxiL2BtSqGUrbwrx+dw8DGiYX3z0RhRrfu2vS40A7w@mail.gmail.com>

On Tue, 12 Apr 2022 13:09:51 -0700
Yang Luan <luan.penny@gmail.com> wrote:

> Hi,
> 
> We have an application using DPDK on AWS and would like to port it to
> Azure. What would be recommended PMD to use? If I understand correctly, we
> can either use the Netvsc PMD or the vdev_Netvsc PMD. It seems the Netvsc
> PMD is newer.

Short answer:

Netvsc PMD is faster and can handle events better.
vdev_netvsc/failsafe/tap is slower but can emulate some types of rte_flow.

> 
> An alternative is to use the mlx4 PMD by only attaching to the mlx NIC's
> PCI address. As I understand it, the concern is the mlx nic may not receive
> all the packets. We run a proprietary UDP based protocol on top of DPDK.
> Are all UDP packets guaranteed to be received by the mlx NIC?

That won't work. the MLX device only sees established flows.

  reply	other threads:[~2022-04-13 15:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-12 20:09 Yang Luan
2022-04-13 15:58 ` Stephen Hemminger [this message]
2022-04-13 18:41   ` Yang Luan
2022-04-13 23:36     ` Stephen Hemminger

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