Re: [PATCH net-next v3 0/6] page_pool: a couple of assorted optimizations

From: Jakub Kicinski
Date: Thu Aug 03 2023 - 21:21:32 EST


On Thu, 3 Aug 2023 20:20:32 +0200 Alexander Lobakin wrote:
> That initially was a spin-off of the IAVF PP series[0], but has grown
> (and shrunk) since then a bunch. In fact, it consists of three
> semi-independent blocks:
>
> * #1-2: Compile-time optimization. Split page_pool.h into 2 headers to
> not overbloat the consumers not needing complex inline helpers and
> then stop including it in skbuff.h at all. The first patch is also
> prereq for the whole series.
> * #3: Improve cacheline locality for users of the Page Pool frag API.
> * #4-6: Use direct cache recycling more aggressively, when it is safe
> obviously. In addition, make sure nobody wants to use Page Pool API
> with disabled interrupts.
>
> Patches #1 and #5 are authored by Yunsheng and Jakub respectively, with
> small modifications from my side as per ML discussions.
> For the perf numbers for #3-6, please see individual commit messages.

Our scheming didn't help much, the series also conflicts
with the net/xdp.h includes which came in via bpf-next :(
--
pw-bot: cr