Thread (39 messages) 39 messages, 4 authors, 2026-02-20

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

From: Paolo Valerio <hidden>
Date: 2026-01-26 23:35:26

On 26 Jan 2026 at 03:29:46 PM, Andrew Lunn [off-list ref] wrote:
quoted
quoted
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?
Thanks Andrew,

I can't tell, but the same numbers were a little surprising to me as well.
I'll spend some more time on this on my hw.
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