rtl_tcp problem or not?

David Basden davidb-sdr at rcpt.to
Thu May 16 02:07:08 UTC 2013

On Wed, May 15, 2013 at 08:44:15PM +0200, Favati wrote:
> Il 13/05/2013 19:07, Favati ha scritto:
> >It SEEMS that lowering the buffer to 16 (option -b 16) solved the
> >problem...(it's up since 30mins atm).
> >
> >I'll let you know...
> >
> >
> >
> >
> no way...re-happened today...
> I've no more ideas :(

Run 'vmstat 1' in a different terminal on the RPi while running
stuff, and paste the first dozen lines? (You can just CTRL-C
vmstat after this)

I ran rtl-tcp a while ago on the RPi and it was really pushing
the limits of the IO bandwidth and CPU, but there has been a
lot of optimisation in the RPi stack kernels etc since. Using a
USB network interface would just push the RPi's limited USB IO
even harder.

Reducing the samplerate for rtl-tcp might help a bit if you
aren't looking at a wideband signal.


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