> On 19 Sep, 2023, at 1:07 am, Jonathan Morton <[email protected]> wrote: > >> Raspberry Pi 4's just aren't very good at networking because of their I/O >> architecture on the board, just as they are slow at USB in general. That's >> why the CM4 is interesting. It's interesting that the PiHole has gotten so >> popular - it would run better on an Pi with a better network architecture. > > On the contrary, the Pi 4 has an excellent I/O architecture compared to most > of its peers, and especially compared to the previous Pis. The built-in NIC > is internal to the SoC and *NOT* attached via USB any more, so it can > genuinely support gigabit speeds. The USB interface is also fast enough to > support a second GigE NIC, though the latency wouldn't be as good as one > attached over PCIe. That's with a standard, off-the-shelf Pi 4B.
Timely breaking news: the Raspberry Pi 5 has just been announced. The important new feature here (for us) is that it exposes a PCIe bus lane on the standard model, so you don't have to mess around with the Compute Module just to get access to that. The built-in Ethernet port is now implemented in a PCIe-attached "southbridge" chip, and the WiFi performance has been improved by accelerating the interface by which the radio is attached. On the downside, the price has gone up. - Jonathan Morton _______________________________________________ Cake mailing list [email protected] https://lists.bufferbloat.net/listinfo/cake
