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Updated Setting up OpenWebRX on a Raspberry Pi 2 (markdown)

András Retzler 2015-10-18 01:06:14 +02:00
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7
Setting-up-OpenWebRX-on-a-Raspberry-Pi-2.md

@ -15,12 +15,17 @@ You will need a **Raspberry Pi 2**.
The Raspberry Pi 2 should be able to handle about 10 clients simultaneously at the sampling rate of 250 ksps.
It is quite good from an embedded device like that, but don't expect the same performance than from a PC.
![](http://ha5kfu.sch.bme.hu/up/levlista/top-all-proc.png)
You will have to set the `max_clients` and the `samp_rate` correctly.
If you allow too much clients to connect, audio will lag for all of them (will get audio underruns), as the CPU just can't make it.
The lower the sampling rate is, the lower the CPU usage gets (per client as well).
The higher the sampling rate is:
* the higher bandwidth will be seen on the waterfall diagram,
* the higher the CPU usage gets (per client as well),
* the less clients can connect without lags.
You should try to open many browser windows and see at how many clients will the audio start to lag.