From: "Michael S. Tsirkin" <mst@redhat.com>
To: Parav Pandit <parav@nvidia.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Maor Gottlieb <maorg@nvidia.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
Jason Gunthorpe <jgg@nvidia.com>, Jiri Pirko <jiri@nvidia.com>,
Leon Romanovsky <leonro@nvidia.com>
Subject: Re: [PATCH vfio 11/11] vfio/virtio: Introduce a vfio driver over virtio devices
Date: Thu, 21 Sep 2023 13:24:07 -0400 [thread overview]
Message-ID: <20230921132206-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <PH0PR12MB54813216D57AD82FAC0C10A7DCF8A@PH0PR12MB5481.namprd12.prod.outlook.com>
On Thu, Sep 21, 2023 at 05:09:04PM +0000, Parav Pandit wrote:
>
>
> > From: Michael S. Tsirkin <mst@redhat.com>
> > Sent: Thursday, September 21, 2023 10:31 PM
>
> > Another question I'm interested in is whether there's actually a performance
> > benefit to using this as compared to just software vhost. I note there's a VM exit
> > on each IO access, so ... perhaps?
> > Would be nice to see some numbers.
>
> Packet rate and bandwidth are close are only 10% lower than modern device due to the batching of driver notification.
> Bw tested with iperf with one and multiple queues.
> Packet rate tested with testpmd.
Nice, good to know. Could you compare this with vdpa with shadow vq
enabled? That's probably the closest equivalent that needs
no kernel or hardware work.
--
MST
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
next prev parent reply other threads:[~2023-09-21 17:24 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 12:40 [PATCH vfio 00/11] Introduce a vfio driver over virtio devices Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 01/11] virtio-pci: Use virtio pci device layer vq info instead of generic one Yishai Hadas via Virtualization
2023-09-21 13:46 ` Michael S. Tsirkin
2023-09-26 19:13 ` Feng Liu via Virtualization
2023-09-27 18:09 ` Feng Liu via Virtualization
2023-09-27 21:24 ` Michael S. Tsirkin
2023-09-21 12:40 ` [PATCH vfio 02/11] virtio: Define feature bit for administration virtqueue Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 03/11] virtio-pci: Introduce admin virtqueue Yishai Hadas via Virtualization
2023-09-21 13:57 ` Michael S. Tsirkin
2023-09-26 19:23 ` Feng Liu via Virtualization
2023-09-27 18:12 ` Feng Liu via Virtualization
2023-09-27 21:27 ` Michael S. Tsirkin
2023-10-02 18:07 ` Feng Liu via Virtualization
2023-09-21 12:40 ` [PATCH vfio 04/11] virtio: Expose the synchronous command helper function Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 05/11] virtio-pci: Introduce admin command sending function Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 06/11] virtio-pci: Introduce API to get PF virtio device from VF PCI device Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 07/11] virtio-pci: Introduce admin commands Yishai Hadas via Virtualization
2023-09-24 5:18 ` kernel test robot
2023-09-25 3:18 ` kernel test robot
2023-09-21 12:40 ` [PATCH vfio 08/11] vfio/pci: Expose vfio_pci_core_setup_barmap() Yishai Hadas via Virtualization
2023-09-21 16:35 ` Alex Williamson
2023-09-26 9:45 ` Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 09/11] vfio/pci: Expose vfio_pci_iowrite/read##size() Yishai Hadas via Virtualization
2023-09-21 12:40 ` [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device Yishai Hadas via Virtualization
2023-09-21 13:08 ` Michael S. Tsirkin
2023-09-21 20:34 ` Michael S. Tsirkin
2023-09-26 10:51 ` Yishai Hadas via Virtualization
2023-09-26 11:25 ` Michael S. Tsirkin
2023-09-22 9:54 ` Michael S. Tsirkin
2023-09-26 11:14 ` Yishai Hadas via Virtualization
2023-09-26 11:41 ` Michael S. Tsirkin
[not found] ` <20230927131817.GA338226@nvidia.com>
2023-09-27 21:30 ` Michael S. Tsirkin
[not found] ` <20230927231600.GD339126@nvidia.com>
2023-09-28 5:26 ` Michael S. Tsirkin
2023-10-02 6:28 ` Christoph Hellwig
[not found] ` <20231002151320.GA650762@nvidia.com>
2023-10-05 8:49 ` Christoph Hellwig
[not found] ` <20231005111004.GK682044@nvidia.com>
2023-10-06 13:09 ` Christoph Hellwig
[not found] ` <20231010131031.GJ3952@nvidia.com>
2023-10-10 13:56 ` Michael S. Tsirkin
[not found] ` <20231010140849.GL3952@nvidia.com>
2023-10-10 14:54 ` Michael S. Tsirkin
2023-10-10 15:09 ` Yishai Hadas via Virtualization
2023-10-10 15:14 ` Michael S. Tsirkin
2023-10-10 15:43 ` Yishai Hadas via Virtualization
2023-10-10 15:58 ` Parav Pandit via Virtualization
2023-10-10 15:58 ` Michael S. Tsirkin
2023-10-10 16:09 ` Yishai Hadas via Virtualization
2023-10-10 20:42 ` Michael S. Tsirkin
2023-10-11 7:44 ` Yishai Hadas via Virtualization
2023-10-11 8:02 ` Michael S. Tsirkin
2023-10-11 8:58 ` Yishai Hadas via Virtualization
2023-10-11 9:03 ` Michael S. Tsirkin
2023-10-11 11:25 ` Yishai Hadas via Virtualization
2023-10-11 6:12 ` Christoph Hellwig
[not found] ` <20231010155937.GN3952@nvidia.com>
2023-10-10 16:03 ` Michael S. Tsirkin
[not found] ` <20231010160712.GO3952@nvidia.com>
2023-10-10 16:21 ` Parav Pandit via Virtualization
2023-10-10 20:38 ` Michael S. Tsirkin
2023-10-11 6:13 ` Christoph Hellwig
2023-10-11 6:43 ` Michael S. Tsirkin
2023-10-11 6:59 ` Christoph Hellwig
2023-10-11 8:00 ` Parav Pandit via Virtualization
2023-10-11 8:10 ` Michael S. Tsirkin
[not found] ` <20231011121849.GV3952@nvidia.com>
2023-10-11 17:03 ` Michael S. Tsirkin
2023-10-11 17:05 ` Michael S. Tsirkin
2023-10-12 10:29 ` Zhu, Lingshan
[not found] ` <20231012132749.GK3952@nvidia.com>
2023-10-13 10:28 ` Zhu, Lingshan
2023-10-13 13:50 ` Michael S. Tsirkin
2023-10-16 8:33 ` Zhu, Lingshan
2023-10-16 8:52 ` Michael S. Tsirkin
2023-10-16 9:53 ` Zhu, Lingshan
2023-10-11 8:12 ` Michael S. Tsirkin
2023-10-12 10:30 ` Zhu, Lingshan
2023-10-11 6:26 ` Christoph Hellwig
[not found] ` <20231011135709.GW3952@nvidia.com>
2023-10-11 14:17 ` Christoph Hellwig
[not found] ` <20231011145810.GZ3952@nvidia.com>
2023-10-11 16:59 ` Michael S. Tsirkin
[not found] ` <20231011171944.GA3952@nvidia.com>
2023-10-11 20:20 ` Michael S. Tsirkin
2023-09-21 12:40 ` [PATCH vfio 11/11] vfio/virtio: Introduce a vfio driver over virtio devices Yishai Hadas via Virtualization
2023-09-21 13:16 ` Michael S. Tsirkin
[not found] ` <20230921141125.GM13733@nvidia.com>
2023-09-21 14:16 ` Michael S. Tsirkin
[not found] ` <20230921164139.GP13733@nvidia.com>
2023-09-21 16:53 ` Michael S. Tsirkin
[not found] ` <20230921183926.GV13733@nvidia.com>
2023-09-21 19:13 ` Michael S. Tsirkin
[not found] ` <20230921194946.GX13733@nvidia.com>
2023-09-21 20:45 ` Michael S. Tsirkin
[not found] ` <20230921225526.GE13733@nvidia.com>
2023-09-22 3:02 ` Jason Wang
2023-09-22 11:23 ` Michael S. Tsirkin
2023-09-22 3:01 ` Jason Wang
[not found] ` <20230922121132.GK13733@nvidia.com>
2023-09-25 2:34 ` Jason Wang
[not found] ` <20230925122607.GW13733@nvidia.com>
2023-09-25 19:44 ` Michael S. Tsirkin
[not found] ` <20230926004059.GM13733@nvidia.com>
2023-09-26 5:34 ` Michael S. Tsirkin
2023-09-26 5:42 ` Michael S. Tsirkin
[not found] ` <20230926135057.GO13733@nvidia.com>
2023-09-27 21:38 ` Michael S. Tsirkin
[not found] ` <20230927232005.GE339126@nvidia.com>
2023-09-28 5:31 ` Michael S. Tsirkin
2023-09-26 4:37 ` Jason Wang
2023-09-26 5:33 ` Parav Pandit via Virtualization
2023-09-21 19:17 ` Michael S. Tsirkin
[not found] ` <20230921195115.GY13733@nvidia.com>
2023-09-21 20:55 ` Michael S. Tsirkin
2023-09-25 4:44 ` Zhu, Lingshan
2023-09-22 3:45 ` Zhu, Lingshan
2023-09-21 13:33 ` Michael S. Tsirkin
2023-09-21 16:43 ` Alex Williamson
[not found] ` <20230921165224.GR13733@nvidia.com>
2023-09-21 17:01 ` Michael S. Tsirkin
2023-09-21 17:09 ` Parav Pandit via Virtualization
2023-09-21 17:24 ` Michael S. Tsirkin [this message]
[not found] ` <20230921170709.GS13733@nvidia.com>
2023-09-21 17:21 ` Michael S. Tsirkin
[not found] ` <20230921174450.GT13733@nvidia.com>
2023-09-21 17:55 ` Michael S. Tsirkin
[not found] ` <20230921181637.GU13733@nvidia.com>
2023-09-21 19:34 ` Michael S. Tsirkin
[not found] ` <20230921195345.GZ13733@nvidia.com>
2023-09-21 20:16 ` Michael S. Tsirkin
2023-09-22 3:02 ` Jason Wang
[not found] ` <20230922122246.GN13733@nvidia.com>
2023-09-22 12:25 ` Parav Pandit via Virtualization
2023-09-22 15:13 ` Michael S. Tsirkin
[not found] ` <20230922151534.GR13733@nvidia.com>
2023-09-22 15:40 ` Michael S. Tsirkin
[not found] ` <20230922162233.GT13733@nvidia.com>
2023-09-25 17:36 ` Michael S. Tsirkin
2023-09-25 2:30 ` Jason Wang
2023-09-25 8:26 ` Parav Pandit via Virtualization
2023-09-25 18:36 ` Michael S. Tsirkin
2023-09-26 2:34 ` Zhu, Lingshan
2023-09-26 3:45 ` Parav Pandit via Virtualization
2023-09-26 4:37 ` Jason Wang
2023-10-12 10:52 ` Michael S. Tsirkin
2023-10-12 11:11 ` Parav Pandit via Virtualization
2023-10-12 11:30 ` Michael S. Tsirkin
2023-10-12 11:40 ` Parav Pandit via Virtualization
2023-09-26 2:32 ` Jason Wang
2023-09-26 4:01 ` Parav Pandit via Virtualization
2023-09-26 4:37 ` Jason Wang
2023-09-26 5:27 ` Parav Pandit via Virtualization
2023-09-26 11:49 ` Michael S. Tsirkin
2023-10-08 4:28 ` Jason Wang
[not found] ` <20230921224836.GD13733@nvidia.com>
2023-09-22 9:47 ` Michael S. Tsirkin
[not found] ` <20230922122328.GO13733@nvidia.com>
2023-09-22 15:45 ` Michael S. Tsirkin
2023-09-22 3:02 ` Jason Wang
[not found] ` <20230922122501.GP13733@nvidia.com>
2023-09-22 15:39 ` Michael S. Tsirkin
[not found] ` <20230922161928.GS13733@nvidia.com>
2023-09-25 18:16 ` Michael S. Tsirkin
[not found] ` <20230925185318.GK13733@nvidia.com>
2023-09-25 19:52 ` Michael S. Tsirkin
2023-09-21 19:58 ` Alex Williamson
[not found] ` <20230921200121.GA13733@nvidia.com>
2023-09-21 20:20 ` Michael S. Tsirkin
2023-09-21 20:59 ` Alex Williamson
[not found] ` <20230922123708.GA130749@nvidia.com>
2023-09-22 12:59 ` Parav Pandit via Virtualization
2023-09-26 15:20 ` Yishai Hadas via Virtualization
2023-09-26 17:00 ` Michael S. Tsirkin
2023-10-02 4:38 ` Parav Pandit via Virtualization
2023-09-22 10:10 ` Michael S. Tsirkin
2023-09-22 15:53 ` Michael S. Tsirkin
2023-10-02 11:23 ` Parav Pandit via Virtualization
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230921132206-mutt-send-email-mst@kernel.org \
--to=mst@redhat.com \
--cc=jgg@nvidia.com \
--cc=jiri@nvidia.com \
--cc=kvm@vger.kernel.org \
--cc=leonro@nvidia.com \
--cc=maorg@nvidia.com \
--cc=parav@nvidia.com \
--cc=virtualization@lists.linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).