From: Eli Cohen <elic@nvidia.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"eli@mellanox.com" <eli@mellanox.com>,
"lulu@redhat.com" <lulu@redhat.com>,
Majd Dibbiny <majd@nvidia.com>, "Maor Dickman" <maord@nvidia.com>,
Shahaf Shuler <shahafs@mellanox.com>,
"Parav Pandit" <parav@mellanox.com>
Subject: RE: VDPA Debug/Statistics
Date: Tue, 11 Aug 2020 11:58:23 +0000 [thread overview]
Message-ID: <BN8PR12MB34259F2AE1FDAF2D40E48C5BAB450@BN8PR12MB3425.namprd12.prod.outlook.com> (raw)
In-Reply-To: <20200811073144-mutt-send-email-mst@kernel.org>
On Tue, Aug 11, 2020 at 11:26:20AM +0000, Eli Cohen wrote:
> Hi All
>
> Currently, the only statistics we get for a VDPA instance comes from the virtio_net device instance. Since VDPA involves hardware acceleration, there can be quite a lot of information that can be fetched from the underlying device. Currently there is no generic method to fetch this information.
>
> One way of doing this can be to create a the host, a net device for
> each VDPA instance, and use it to get this information or do some
> configuration. Ethtool can be used in such a case
>
> I would like to hear what you think about this or maybe you have some other ideas to address this topic.
>
> Thanks,
> Eli
Something I'm not sure I understand is how are vdpa instances created on mellanox cards? There's a devlink command for that, is that right?
Can that be extended for stats?
Currently any VF will be probed as VDPA device. We're adding devlink support but I am not sure if devlink is suitable for displaying statistics. We will discuss internally but I wanted to know why you guys think.
--
MST
next prev parent reply other threads:[~2020-08-11 11:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-11 11:26 VDPA Debug/Statistics Eli Cohen
2020-08-11 11:33 ` Michael S. Tsirkin
2020-08-11 11:58 ` Eli Cohen [this message]
2020-08-11 12:44 ` Michael S. Tsirkin
2020-08-11 16:10 ` Roopa Prabhu
2020-08-12 2:09 ` Jason Wang
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