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Favati smile_k at libero.it> 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. > > David > > I've run vmstat 1, but nothing special change when the problem occour. The cpu NEVER goes more than 50%. Lowering the samplerate didn't change anything (except a very little cpu load lowered). Still investigating...if someone have some ideas to let me try.... :)