Re: ure0: Questionable Performance

[matthewd%fastmail.us@localhost]

> I'll look around for an adapter using axen(4) - they seem relatively 
> inexpensive.
>
To close out this thread,  I received an adapter using axen(4).  I also enabled tso4.  

With the following sysctl's set, I see a remarkable improvement over what I had with ure(4), though not quite to what you reported.  Still, this is a step in the right direction.

# TCP/IP stack
# automatic network buffers resize
net.inet.tcp.recvbuf_auto=1
net.inet.tcp.sendbuf_auto=1
# 16MB buffers upper limit
net.inet.tcp.sendbuf_max=16777216
net.inet.tcp.recvbuf_max=16777216
# socket buffer sizes
kern.sbmax=8388608


matthew@snoopy ~> iperf3 -c 192.168.1.131
Connecting to host 192.168.1.131, port 5201
[  5] local 192.168.1.121 port 64525 connected to 192.168.1.131 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  39.0 MBytes   327 Mbits/sec    0   38.2 KBytes       
[  5]   1.00-2.01   sec  40.1 MBytes   333 Mbits/sec    0   74.9 KBytes       
[  5]   2.01-3.01   sec  39.6 MBytes   332 Mbits/sec    0   1.41 KBytes       
[  5]   3.01-4.01   sec  39.6 MBytes   332 Mbits/sec    0   32.5 KBytes       
[  5]   4.01-5.01   sec  39.2 MBytes   329 Mbits/sec    0   32.5 KBytes       
[  5]   5.01-6.01   sec  39.4 MBytes   330 Mbits/sec    0    133 KBytes       
[  5]   6.01-7.01   sec  39.6 MBytes   332 Mbits/sec    0    130 KBytes       
[  5]   7.01-8.01   sec  39.9 MBytes   334 Mbits/sec    0    139 KBytes       
[  5]   8.01-9.01   sec  39.5 MBytes   331 Mbits/sec    0   60.8 KBytes       
[  5]   9.01-10.01  sec  39.9 MBytes   334 Mbits/sec    0   15.6 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec   396 MBytes   332 Mbits/sec    0             sender
[  5]   0.00-10.21  sec   395 MBytes   324 Mbits/sec                  receiver

 To clarify, even with the above settings, ure(4) performance was same as before..
Are there any sysctl knobs foiks have tuned / changed from default values ? 

-- 
  
  matthewd%fastmail.us@localhost