Hi Matthew, I'm not a NetBSD expert but these days I have been spending some time studying the system and one topic that I read was related to NetBSD Tunning, I am not sure if it can help you, but this tutorial https://wiki.netbsd.org/tutorials/tuning_netbsd_for_performance/#index3h2 give some TCP/IP tunning in NetBSD It can help you start trying to solve your issue.
Em seg., 22 de jul. de 2024 às 09:53, <matth...@fastmail.us> escreveu: > Hi, > > 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. > > $ uname -a > NetBSD snoopy 10.0_STABLE NetBSD 10.0_STABLE (GENERIC) #2: Sun Jul 21 > 02:18:18 MDT 2024 > sysbuild@snoopy:/home/sysbuild/amd64/obj/usr/src/sys/arch/amd64/compile/GENERIC > amd64 > > $ grep ure0 dmesg > [ 4.005001] ure0 at uhub0 port 4 > [ 4.034998] ure0: Realtek (0x0bda) USB 10/100/1000 LAN (0x8153), rev > 3.00/30.00, addr 6 > [ 4.064998] ure0: RTL8153 ver 5c20 > [ 4.174998] rgephy0 at ure0 phy 0: RTL8251 1000BASE-T media interface, > rev. 0 > [ 4.234998] ure0: Ethernet address 9c:eb:e8:54:53:73 > > $ grep uhub0 dmesg > [ 1.989710] uhub0 at usb0: NetBSD (0x0000) xHCI root hub (0x0000), > class 9/0, rev 3.00/1.00, addr 0 > [ 2.024993] uhub0: 6 ports with 6 removable, self powered > [ 2.614995] umass0 at uhub0 port 2 configuration 1 interface 0 > [ 3.185000] uhub3 at uhub0 port 3: Generic (0x0bda) 4-Port USB 3.0 Hub > (0x0411), class 9/0, rev 3.00/1.17, addr 3 > [ 4.005001] ure0 at uhub0 port 4 > > $ grep usb0 dmesg > [ 1.026529] usb0 at xhci0: USB revision 3.0 > [ 1.989710] uhub0 at usb0: NetBSD (0x0000) xHCI root hub (0x0000), > class 9/0, rev 3.00/1.00, addr 0 > > $ 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 > ec_capabilities=0x1<VLAN_MTU> > ec_enabled=0 > address: 9c:eb:e8:54:53:73 > media: Ethernet autoselect (1000baseT full-duplex) > status: active > inet6 fe80::e15f:2812:3ff7:850%ure0/64 flags 0 scopeid 0x2 > inet6 2600:6c67:697f:6a77:9d2f:6b1:2c56:2ed7/64 flags > 0x40<AUTOCONF> > inet6 fdb7:2fef:8e0e:0:e9f1:a99d:c75e:8052/64 flags 0x40<AUTOCONF> > inet6 2600:6c67:697f:6a77::5b3/128 flags 0 > inet6 fdb7:2fef:8e0e::5b3/128 flags 0 > inet 192.168.1.121/24 broadcast 192.168.1.255 flags 0 > > However, using iperf3 to measure networking performance, it seems a bit > substandard: > > $ iperf3 -c 192.168.1.131 > Connecting to host 192.168.1.131, port 5201 > [ 5] local 192.168.1.121 port 62544 connected to 192.168.1.131 port 5201 > [ ID] Interval Transfer Bitrate Retr Cwnd > [ 5] 0.00-1.01 sec 5.75 MBytes 47.8 Mbits/sec 0 3.00 MBytes > > [ 5] 1.01-2.02 sec 5.50 MBytes 45.7 Mbits/sec 0 3.00 MBytes > > [ 5] 2.02-3.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > [ 5] 3.02-4.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > [ 5] 4.02-5.02 sec 5.62 MBytes 47.2 Mbits/sec 0 3.00 MBytes > > [ 5] 5.02-6.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > [ 5] 6.02-7.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > [ 5] 7.02-8.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > [ 5] 8.02-9.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > [ 5] 9.02-10.02 sec 5.50 MBytes 46.1 Mbits/sec 0 3.00 MBytes > > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bitrate Retr > [ 5] 0.00-10.02 sec 55.4 MBytes 46.4 Mbits/sec 0 > sender > [ 5] 0.00-10.24 sec 55.5 MBytes 45.4 Mbits/sec > receiver > > Is this an artifact of the driver, the USB system, or a misconfiguration > on my end ? > Swapping network cables with a desktop linux system which sees 351 > Mbit/sec via the same iperf3 does not change the numbers significantly. > So, I think I can rule out a bad cable... > > Any tips appreciated! > > -Matthew > -- > > matth...@fastmail.us > -- Daniel Cunha https://github.com/danielsoro https://twitter.com/danielvlcunha https://www.linkedin.com/in/danielvlcunha/
