44 lines
1.4 KiB
Markdown
44 lines
1.4 KiB
Markdown
# Examples / `tcpblaster` TCP Performance Test
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To set up, do `make menuconfig` and select the _Apps_ → _Examples_ →
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_tcpblaster_. By default, nuttx will the be the client which sends data; and the
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host computer (Linux, macOS, or Windows) will be the server.
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Set up networking so the nuttx computer can ping the host, and the host can ping
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nuttx. Now you are ready to run the test.
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On host:
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```
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$ ./tcpserver
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Binding to IPv4 Address: 00000000
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server: Accepting connections on port 5471
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```
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On nuttx:
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```
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nsh> tcpclient
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Connecting to IPv4 Address: 0100000a
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client: Connected
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[2014-07-31 00:16:15.000] 0: Sent 200 4096-byte buffers: 800.0 KB (avg 4.0 KB) in 0.18 seconds (4444.4 KB/second)
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```
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Now on the host you should see something like:
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```
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$ ./tcpserver
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Binding to IPv4 Address: 00000000
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server: Accepting connections on port 5471
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server: Connection accepted -- receiving
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[2020-02-22 16:17:07.000] 0: Received 200 buffers: 502.9 KB (buffer average size: 2.5 KB) in 0.12 seconds (4194.8 KB/second)
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[2020-02-22 16:17:07.000] 1: Received 200 buffers: 393.1 KB (buffer average size: 2.0 KB) in 0.09 seconds (4299.4 KB/second)
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```
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This will tell you the link speed in KB/sec – kilobytes per second. If you want
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kilobits, multiply by `8`.
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You can use the `make menuconfig` to reverse the setup, and have nuttx be the
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server, and the host be the client. If you do that, start the server first
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(nuttx), then start the client (host).
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