Increase the number of network packets and buffers for better TCP
performance in the sample out-of-the-box.
Decrease the network buffer data size for better buffer management in
the sample (less buffer space wasted for L2 header). The only drawback
of this is reduced TCP TX performance, but less than 2 Mbps in my case.
Finally, enable speed optimizations for another small performance boost.
As the RAM requirements of the sample now increase considerably in the
default configuration, add a note in the readme file about it, and how
to make it fit into smaller boards.
Tested on nucleo_h723zg:
Before (current defaults):
UDP TX RX
76.47 Mbps 93.48 Mbps
TCP TX RX
76.18 Mbps 67.75 Mbps
After (new defaults):
UDP TX RX
76.08 Mbps 93.62 Mbps
TCP TX RX
74.19 Mbps 85.51 Mbps
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
e91c47d338