# Re: \[PATCH net-next 4/4\] net: hns3: support skb's frag page recycling based on page pool

- From: Jakub Kicinski \<kuba@kernel.org\>
- Date: 2021-08-06 01:20:11 
- List: netdev
- Page: https://ratatoskr.run/netdev/2021/08/1469588
- Thread: https://ratatoskr.run/netdev/2021/08/1468672/t.md

```text
On Thu, 5 Aug 2021 19:05:26 +0800 Yunsheng Lin wrote:
> This patch adds skb's frag page recycling support based on
> the frag page support in page pool.
> 
> The performance improves above 10~20% for single thread iperf
> TCP flow with IOMMU disabled when iperf server and irq/NAPI
> have a different CPU.
> 
> The performance improves about 135%(14Gbit to 33Gbit) for single
> thread iperf TCP flow IOMMU is in strict mode and iperf server
> shares the same cpu with irq/NAPI.
> 
> Signed-off-by: Yunsheng Lin <redacted>

This patch does not apply cleanly to net-next, please rebase 
if you're targeting that tree.
```