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From: Wei Wang <wei.w.wang@intel.com>
To: Jason Wang <jasowang@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] vhost-pci and virtio-vhost-user
Date: Mon, 15 Jan 2018 15:59:57 +0800	[thread overview]
Message-ID: <5A5C5F7D.8070403@intel.com> (raw)
In-Reply-To: <a45c1da8-03e8-140f-725c-af0f31e3da62@redhat.com>

On 01/15/2018 02:56 PM, Jason Wang wrote:
>
>
> On 2018年01月12日 18:18, Stefan Hajnoczi wrote:
>>
>
> I just fail understand why we can't do software defined network or 
> storage with exist virtio device/drivers (or are there any 
> shortcomings that force us to invent new infrastructure).
>

Existing virtio-net works with a host central vSwitch, and it has the 
following disadvantages:
1) long code/data path;
2) poor scalability; and
3) host CPU sacrifice

Vhost-pci solves the above issues by providing a point-to-point 
communication between VMs. No matter how the control path would look 
like finally, the key point is that the data path is P2P between VMs.

Best,
Wei

  reply	other threads:[~2018-01-15  7:57 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-10 16:14 [Qemu-devel] vhost-pci and virtio-vhost-user Stefan Hajnoczi
2018-01-11  6:31 ` Wei Wang
2018-01-11  9:56   ` Stefan Hajnoczi
2018-01-12  6:44     ` Wei Wang
2018-01-12 10:37       ` Stefan Hajnoczi
2018-01-14  3:36         ` Wang, Wei W
2018-01-15 14:02           ` Stefan Hajnoczi
2018-01-11 10:57 ` Jason Wang
2018-01-11 15:23   ` Stefan Hajnoczi
2018-01-12  3:32     ` Jason Wang
2018-01-12  5:20       ` Yang, Zhiyong
2018-01-15  3:09         ` Jason Wang
2018-01-12 10:18       ` Stefan Hajnoczi
2018-01-15  6:56         ` Jason Wang
2018-01-15  7:59           ` Wei Wang [this message]
2018-01-15  8:34             ` Jason Wang
2018-01-15 10:43               ` Wei Wang
2018-01-16  5:33                 ` Jason Wang
2018-01-17  8:44                   ` Wei Wang
2018-01-15 13:56           ` Stefan Hajnoczi
2018-01-16  5:41             ` Jason Wang
2018-01-18 10:51               ` Stefan Hajnoczi
2018-01-18 11:51                 ` Jason Wang
2018-01-19 17:20                   ` Stefan Hajnoczi
2018-01-22  3:54                     ` Jason Wang
2018-01-23 11:52                       ` Stefan Hajnoczi
2018-01-15  7:56         ` Wei Wang

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