Hi, I've noticed recently a certain slow-down in the network speed of one of my NetBSD-current vms - a q35 guest of a proxmox server living on a 2.5 gb/s LAN. The host itself and any Linux guest get iperf3 speeds close enough to wire speeds: .... [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 285 MBytes 2.39 Gbits/sec 0 4.16 MBytes [ 5] 1.00-2.00 sec 283 MBytes 2.38 Gbits/sec 0 4.16 MBytes [ 5] 2.00-3.00 sec 283 MBytes 2.37 Gbits/sec 0 4.16 MBytes
or thereabouts; the NetBSD guest gets: ... [ 5] local 192.168.0.49 port 52011 connected to 192.168.0.250 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 640 KBytes 5.24 Mbits/sec 0 451 KBytes [ 5] 1.00-2.00 sec 512 KBytes 4.19 Mbits/sec 18 225 KBytes [ 5] 2.00-3.00 sec 178 MBytes 1.49 Gbits/sec 6 107 KBytes [ 5] 3.00-4.00 sec 203 MBytes 1.71 Gbits/sec 0 27.1 KBytes [ 5] 4.00-5.01 sec 207 MBytes 1.73 Gbits/sec 0 164 KBytes [ 5] 5.01-6.00 sec 206 MBytes 1.74 Gbits/sec 0 141 KBytes [ 5] 6.00-7.01 sec 186 MBytes 1.56 Gbits/sec 0 74.1 KBytes [ 5] 7.01-8.00 sec 193 MBytes 1.62 Gbits/sec 0 165 KBytes [ 5] 8.00-9.00 sec 160 MBytes 1.34 Gbits/sec 0 148 KBytes [ 5] 9.00-10.00 sec 147 MBytes 1.23 Gbits/sec 0 1.43 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.45 GBytes 1.24 Gbits/sec 24 sender [ 5] 0.00-10.00 sec 1.45 GBytes 1.24 Gbits/sec receiver (notice the first two readings...) I am also getting a lot ... [ 127692.297500] vioif0: can't handle af18 [ 127692.497517] vioif0: can't handle af18 [ 127692.698532] vioif0: can't handle af18 [ 127692.898515] vioif0: can't handle af18 ... dmesg spam. This is on a pretty recent system: # uname -a # uname -a NetBSD ym1r.lorien.lan 10.99.12 NetBSD 10.99.12 (GENERIC) #0: Sun Oct 13 03:06:39 BST 2024 r...@ym1r.lorien.lan:/bd/sysbuild/amd64/obj/home/sysbuild/src/sys/arch/amd64/compile/GENERIC amd64 Chavdar -- ----
