in some threads it was asked how fast the chip would transfer data over wifi.
Just today I found a hint in some sources, that espressif might actually have been generously enough to include "netio" in their lwip library.
This means, that you can run a pretty much standard performance test on the module, without actually having to compile anything yourself.
The modules runs a netio TCP-only server on port 18767, i.e. you can connect to it like this:
./netio -t -p 18767 <module ip>
Here's some data I got, while the module was lying about 20cm from my Laptop and connected in sta+softAP mode (i.e. running it's own network while being connected to an ap).
First set is through the 3rd-party ap connection (i.e. laptop <-> ap <-> esp):
NETIO - Network Throughput Benchmark, Version 1.31
(C) 1997-2010 Kai Uwe Rommel
TCP connection established.
Packet size 1k bytes: 78.37 KByte/s Tx, 37.08 KByte/s Rx.
Packet size 2k bytes: 91.32 KByte/s Tx, 29.69 KByte/s Rx.
Packet size 4k bytes: 283.06 KByte/s Tx, 81.92 KByte/s Rx.
Packet size 8k bytes: 244.86 KByte/s Tx, 65.87 KByte/s Rx.
Packet size 16k bytes: 263.49 KByte/s Tx, 63.75 KByte/s Rx.
Packet size 32k bytes: 235.51 KByte/s Tx, 72.87 KByte/s Rx.
Done.
2nd set through the softAP connection (i.e. laptop <-> esp):
NETIO - Network Throughput Benchmark, Version 1.31
(C) 1997-2010 Kai Uwe Rommel
TCP connection established.
Packet size 1k bytes: 146.76 KByte/s Tx, 14622 Byte/s Rx.
Packet size 2k bytes: 91.85 KByte/s Tx, 13155 Byte/s Rx.
Packet size 4k bytes: 82.97 KByte/s Tx, 25.40 KByte/s Rx.
Packet size 8k bytes: 90.21 KByte/s Tx, 22.11 KByte/s Rx.
Packet size 16k bytes: 76.65 KByte/s Tx, 57.09 KByte/s Rx.
Packet size 32k bytes: 247.28 KByte/s Tx, 68.36 KByte/s Rx.
Done.
Note: While I ran the tests multiple times, some values (mostly Tx of the Module) vary between 1 and 25 KBytes/s in between 2 runs.
This means that these are not "guaranteed" values, but instead they should provide you with a rough overview of what the module is capable of (and what it's not.).
Go ahead, run the tests yourself, tell us if your speeds are in the same range, please
![Smile :)](./images/smilies/icon_e_smile.gif)
EDIT: There's one thing I forgot, sorry for the confusion! You need to call
netio_init();
Regards