netdev - Re: [PATCH net-next 3/8] cadence: macb: Add page pool support handle multi-descriptor frame rx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <b0bff7a8-a004-4eb7-bf1d-2137182e59f9@lunn.ch>
Date: Mon, 26 Jan 2026 15:29:46 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Paolo Valerio <pvalerio@...hat.com>
Cc: netdev@...r.kernel.org, Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	Théo Lebrun <theo.lebrun@...tlin.com>
Subject: Re: [PATCH net-next 3/8] cadence: macb: Add page pool support handle
 multi-descriptor frame rx

> > I was more interested in plain networking, not XDP. Does it perform
> > better with page pool? You at least need to show it is not worse, you
> > need to avoid performance regressions.
> >
> 
> I retested with iperf3. The target has a single rx queue with iperf3
> running with no cpu affinity set.
> 
> |              |  64 | 128 |
> | baseline     | 273 | 545 |
> | pp (page)    | 273 | 544 |
> | pp (2 frags) | 272 | 544 |

So no real difference. That is unusual, it is typically faster, or if
it is always doing line rate, it uses less CPU time. That might
suggest the page pool integration is not optimal?

	Andrew