Messages in this thread | | | Date | Wed, 29 Nov 2023 23:29:10 +0800 | Subject | Re: [PATCH net-next 2/5] virtio_net: Add page_pool support to improve performance | From | Zhu Yanjun <> |
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在 2023/11/29 23:22, Zhu Yanjun 写道: > > 在 2023/11/29 22:59, Michael S. Tsirkin 写道: >> On Wed, Nov 29, 2023 at 10:50:57PM +0800, Zhu Yanjun wrote: >>> 在 2023/5/26 13:46, Liang Chen 写道: >> >> what made you respond to a patch from May, now? > > I want to apply page_pool to our virtio_net. This virtio_net works on > our device. > > I want to verify whether page_pool on virtio_net with our device can > improve the performance or not. > > And I found that ethtool is wrong. > > I use virtio_net on our device. I found that page member variable in > rq is not used in recv path. > > When virtio_net is modprobe, I checked page member variable in rq with > kprobe or crash tool. page member variable in rq is always NULL. > > But sg in recv path is used. > > So how to use page member variable in rq? If page member variable in > rq is always NULL, can we remove it? > > BTW, I use ping and iperf tool to make tests with virtio_net. In the > tests, page member variable in rq is always NULL.
And I replaced page member variable in rq with page_pool, but the statistics of page_pool are always 0.
It is interesting that page_pool member variable in rq is not used in ping and iperf tests.
I am not sure what tests can make page member variable not NULL. ^_^
Best Regards,
Zhu Yanjun
> > It is interesting. > > Zhu Yanjun > >>
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