Messages in this thread | | | Subject | Re: VDPA Debug/Statistics | From | Jason Wang <> | Date | Wed, 12 Aug 2020 10:09:22 +0800 |
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On 2020/8/11 下午7:58, Eli Cohen wrote: > 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
The problems are:
- vDPA is not net specific - vDPA should be transparent to host networking stack
>> >> 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.
I agree with Michael, if it's possible, integrating stats with devlink should be the best. Having another interface with is just for stats looks not good.
Thanks
> > -- > MST >
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