Re: main [so: 15] context, 7950X3D and RTL8251/8153 based Ethernet dongle: loss of state, example log information
Date: Tue, 05 Mar 2024 19:08:50 UTC
On 3/4/24 21:39, Alexander Motin wrote: > >>> AFAIK it is only a workaround. I saw it myself on number of >>> different USB dongles and laptops, that USB starting experience some >>> problems with multiple NIC queues and some other factors. IIRC the >>> Realtek driver was much more stable once I limited it to one queue >>> and some other hacks. IIRC if_cdce just has only one queue and other >>> limitations, that not only makes it more stable, but also much >>> slower. It would be good to understand what's wrong is there >>> exactly, since IMHO it is a big problem now. Unfortunately HPS was >>> unable to reproduce it on his laptop (that makes me wonder if is is >>> specific to chipset(s) or thunderbolt?), so it ended nowhere so far. >> >> I have a Lenovo USB 3 dongle, so no thunderbolt. > > I also use USB3 dongles. But in my laptops the USB 3 ports are > provided by Intel Thunderbolt controller, while in HPS' they were > plain from USB3 controller. Though it may be just a coincidence. I don't think (how do I know?) I have thunderbolt in this Lenovo AMD Ryzen laptop. > >> USB ID 0x17ef/0x7205 >> >> rgephy1: <RTL8251/8153 1000BASE-T media interface> PHY 0 on miibus1 >> >> I tried using the cdce driver, it gives me < 100Mb/s, while the ure >> driver gets > 500Mb/s > > Right, I saw about the same. > Just to try something else, I got another USB dongle, I does the exact same thing: ugen1.10: <ASIX Elec. Corp. AX88179> at usbus1 axge0 on uhub6 axge0: <ASIX Elec. Corp. AX88179, rev 3.00/1.00, addr 9> on usbus1 miibus1: <MII bus> on axge0 rgephy1: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 3 on miibus1 rgephy1: none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow ue0: <USB Ethernet> on axge0 ue0: Ethernet address: xx:xx:xx:xx:xx:xx ue0: link state changed to DOWN ue0: link state changed to UP ue0: link state changed to DOWN ue0: link state changed to UP ue0: link state changed to DOWN ue0: link state changed to UP ue0: link state changed to DOWN ue0: link state changed to UP ue0: 2 link states coalesced ue0: link state changed to UP