vtnet is much improved in 16:current (nodebug)

From: void <void_at_f-m.fm>
Date: Tue, 11 Nov 2025 15:33:00 UTC
Just like to say vtnet throughput performance is much improved in 16:current
so, thank you everyone.

# iperf3 -B 192.168.1.180 -c 192.168.1.230 -l 1M -t 30 -i 2 ; netstat -nCRp tcp | egrep "Active|Proto|5201"
Connecting to host 192.168.1.230, port 5201
[  5] local 192.168.1.180 port 53821 connected to 192.168.1.230 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-2.13   sec   236 MBytes   930 Mbits/sec    0   1.61 MBytes       
[  5]   2.13-4.05   sec   201 MBytes   877 Mbits/sec    0   1.61 MBytes       
[  5]   4.05-6.06   sec   210 MBytes   878 Mbits/sec    0   1.61 MBytes       
[  5]   6.06-8.07   sec   220 MBytes   917 Mbits/sec    0   1.61 MBytes       
[  5]   8.07-10.07  sec   215 MBytes   903 Mbits/sec    0   1.61 MBytes       
[  5]  10.07-12.08  sec   208 MBytes   867 Mbits/sec    0   1.61 MBytes       
[  5]  12.08-14.06  sec   174 MBytes   736 Mbits/sec    0   1.61 MBytes       
[  5]  14.06-16.01  sec   209 MBytes   898 Mbits/sec    0   1.61 MBytes       
[  5]  16.01-18.05  sec   220 MBytes   908 Mbits/sec    0   1.61 MBytes       
[  5]  18.05-20.12  sec   210 MBytes   849 Mbits/sec    0   1.61 MBytes       
[  5]  20.12-22.02  sec   210 MBytes   928 Mbits/sec    0   1.61 MBytes       
[  5]  22.02-24.01  sec   219 MBytes   921 Mbits/sec    0   1.61 MBytes       
[  5]  24.01-26.14  sec   226 MBytes   893 Mbits/sec    0   1.61 MBytes       
[  5]  26.14-28.13  sec   193 MBytes   813 Mbits/sec    0   2.00 MBytes       
[  5]  28.13-30.12  sec   206 MBytes   865 Mbits/sec    0   2.00 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-30.12  sec  3.09 GBytes   882 Mbits/sec  0    sender
[  5]   0.00-30.14  sec  3.09 GBytes   881 Mbits/sec       receiver

iperf Done.
Active Internet connections
Proto Recv-Q Send-Q Local Address       Foreign Address    flowid   ftype CC    cwin  ssthresh MSS  ECN
tcp4  0      0      192.168.1.180.50691 192.168.1.230.5201 00000000 63    cubic 14814 10986    1460 off

Compare with http://void.f-m.fm.user.fm/bhyve-virtio-testing.html measured around a year ago
on very similar hardware
--