Thank you for the reply! On Mon, Jul 22, 2024, at 7:54 AM, Robert Swindells wrote: > matth...@fastmai.us wrote: >> May I have some help troubleshooting poor network performance? I have >> an older laptop (Thinkpad 13) with a USB-C Ethernet dongle that attaches >> as ure0 as it has no builtin Ethernet port. I'm running NetBSD 10.0 >> STABLE built locally from a couple of days ago. > >> $ ifconfig ure0 >> ure0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 >> capabilities=0x3ff00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx> >> capabilities=0x3ff00<UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Rx,TCP6CSUM_Tx> >> capabilities=0x3ff00<UDP6CSUM_Rx,UDP6CSUM_Tx> >> enabled=0 > > You could enable HW checksumming.
This did not appear to make a difference. > > I don't think there is anything wrong with the USB or TCP/IP stacks. I agree. I am wondering if there are configurations I've missed! Are the sysctl knobs on this wiki still relevant: https://wiki.netbsd.org/tutorials/tuning_netbsd_for_performance/#index3h2 ? > What is at the other end of your cable? > > One cause of really slow network performance can be a mismatch in full/half > duplex negotiation between the two devices. At the other end I'm running OpenWrt on a Linksys WRT3200ACM. When connected, both sides show up as !000 Full Duplex. I'll look around for an adapter using axen(4) - they seem relatively inexpensive. -Matthew -- matth...@fastmail.us
