patrickelectric opened a new pull request, #18950:
URL: https://github.com/apache/nuttx/pull/18950
## Summary
Having this disabled by default has terrible performance issues (and I
believe that is a bad idea)
## Impact
Maximum network speed was limited to 50MBits/s
Enabling this option makes it run close to 100MBits/s
## Testing
Option disabled:
```
nsh> iperf -c 192.168.31.54 -t 10 -i 1
IP: 192.168.31.36
mode=tcp-client sip=192.168.31.36:5001,dip=192.168.31.54:5001, interval=1,
time=10
Interval Transfer Bandwidth
0.00- 1.00 sec 6144000 Bytes 49.10 Mbits/sec
1.00- 2.00 sec 6160384 Bytes 49.23 Mbits/sec
2.00- 3.00 sec 6160384 Bytes 49.23 Mbits/sec
3.00- 4.00 sec 6144000 Bytes 49.10 Mbits/sec
4.00- 5.01 sec 6160384 Bytes 49.23 Mbits/sec
5.01- 6.01 sec 6144000 Bytes 49.10 Mbits/sec
6.01- 7.01 sec 6144000 Bytes 49.10 Mbits/sec
7.01- 8.01 sec 6160384 Bytes 49.23 Mbits/sec
8.01- 9.01 sec 6160384 Bytes 49.23 Mbits/sec
9.01- 10.01 sec 6144000 Bytes 49.10 Mbits/sec
0.00- 10.01 sec 61521920 Bytes 49.17 Mbits/sec
iperf exit
nsh> iperf -c 192.168.31.54 -t 10 -i 1 -u
IP: 192.168.31.36
mode=udp-client sip=192.168.31.36:5001,dip=192.168.31.54:5001, interval=1,
time=10
Interval Transfer Bandwidth
0.00- 1.00 sec 5484672 Bytes 43.83 Mbits/sec
1.00- 2.00 sec 5487616 Bytes 43.86 Mbits/sec
2.00- 3.00 sec 5489088 Bytes 43.87 Mbits/sec
3.00- 4.00 sec 5489088 Bytes 43.87 Mbits/sec
4.00- 5.01 sec 5489088 Bytes 43.87 Mbits/sec
5.01- 6.01 sec 5487616 Bytes 43.86 Mbits/sec
6.01- 7.01 sec 5489088 Bytes 43.87 Mbits/sec
7.01- 8.01 sec 5489088 Bytes 43.87 Mbits/sec
8.01- 9.01 sec 5487616 Bytes 43.86 Mbits/sec
9.01- 10.01 sec 5489088 Bytes 43.87 Mbits/sec
0.00- 10.01 sec 54882048 Bytes 43.86 Mbits/sec
iperf exit
```
Option enabled:
```
nsh> iperf -c 192.168.31.54 -t 10 -i 1
IP: 192.168.31.36
mode=tcp-client sip=192.168.31.36:5001,dip=192.168.31.54:5001, interval=1,
time=10
Interval Transfer Bandwidth
0.00- 1.00 sec 10485760 Bytes 83.80 Mbits/sec
1.00- 2.00 sec 10534912 Bytes 84.20 Mbits/sec
2.00- 3.00 sec 10567680 Bytes 84.46 Mbits/sec
3.00- 4.00 sec 10567680 Bytes 84.46 Mbits/sec
4.00- 5.01 sec 10551296 Bytes 84.33 Mbits/sec
5.01- 6.01 sec 10551296 Bytes 84.33 Mbits/sec
6.01- 7.01 sec 10518528 Bytes 84.06 Mbits/sec
7.01- 8.01 sec 10551296 Bytes 84.33 Mbits/sec
8.01- 9.01 sec 10567680 Bytes 84.46 Mbits/sec
9.01- 10.01 sec 10518528 Bytes 84.06 Mbits/sec
0.00- 10.01 sec 105414656 Bytes 84.25 Mbits/sec
iperf exit
nsh>
nsh>
nsh> iperf -c 192.168.31.54 -t 10 -i 1 -u
IP: 192.168.31.36
mode=udp-client sip=192.168.31.36:5001,dip=192.168.31.54:5001, interval=1,
time=10
Interval Transfer Bandwidth
0.00- 1.00 sec 11967360 Bytes 95.55 Mbits/sec
1.00- 2.00 sec 11945280 Bytes 95.47 Mbits/sec
2.00- 3.00 sec 11945280 Bytes 95.47 Mbits/sec
3.00- 4.01 sec 11943808 Bytes 95.46 Mbits/sec
4.01- 5.01 sec 11945280 Bytes 95.47 Mbits/sec
5.01- 6.01 sec 11942336 Bytes 95.44 Mbits/sec
6.01- 7.01 sec 11943808 Bytes 95.46 Mbits/sec
7.01- 8.01 sec 11943808 Bytes 95.46 Mbits/sec
8.01- 9.01 sec 11942336 Bytes 95.44 Mbits/sec
9.01- 10.01 sec 11945280 Bytes 95.47 Mbits/sec
0.00- 10.01 sec 119464576 Bytes 95.47 Mbits/sec
iperf exit
nsh>
```
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