Udo Richter schrieb: > Luca Olivetti wrote: > >>I also wonder how is it >>possible that vdr hasn't enough data to give to the device: no matter >>how big the buffer, once it is filled it should stay more or less full, >>unless you're at the end of the file. > > > One guess: On playback start, buffers are empty and can accept lots of > data. This could result in some busy loops until enough data is read to > fill the buffer. > > If, for some reason, the disk read requires much CPU time, then the busy > loop will actually slow down the disk reading too. > > Maybe, in case of softdevice, this is oscillating: A busy file reader > takes CPU from decoding, causing decoding to stall. And as soon as the > decoder is catching up, maybe by dropping frames, the file buffers run > empty causing the file reader to busy loop again. (speculative, though) I guess this is a possible scenario, at least it explains the symptoms quite acuratly. Hmm, to finally solve this I guess we have to wait until Klaus answers. I think he is now on his holidays, right? So I'll wait until he is back. But thanks for your answers, at least I know now that the softdevice is not the only one which has problems like this. Bye, Martin
