Decoder is to slow

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Decoder is to slow

Postby kermit_nc » Sun Aug 18 2019 17:11

I use the RPI 3b+ with hifiberry dac+ pro

Sometimes the playback becomes stuttering and the mpd.log shows the Decoder is to slow message.
It happens mostly with tidal master albums/titles.
I tried some cpu governors: also performance, conservative and, on demand showed no difference.
This state is very stable: pause and play changes nothing.
To stop this issue skip to the next or previous title or skipping within the title (forward / back).

I did some monitoring on this issue with tailing volumio.log and mpd.log. I also monitored the cpu with top:
mpd uses 1.5% (tidal), 2.0% (webradio) the stuttering playback only starts on the beginning of a !new! title. The cpu is 97%idle. So the decoder to slow issue comes from the prefetching of the next title. It is independent on cpu time for mpd or volumio (both around 1.5% peak) and it stops when I skip the title (fwd, rev, next, prev).
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Decoder is to slow

Postby gorgias » Sun Aug 25 2019 12:54

I get it to but on long mp3 files/pod radio. Could it be network related? I Stream over wifi with pi 3b+.

Aug 25 13:59 : player: played "https://sverigesradio.se/topsy/ljudfil/podrss/7044133.mp3"
Aug 25 14:24 : player: Decoder is too slow; playing silence to avoid xrun
Aug 25 14:24 : player: Decoder is too slow; playing silence to avoid xrun
Aug 25 14:24 : player: Decoder is too slow; playing silence to avoid xrun
Aug 25 14:24 : player: Decoder is too slow; playing silence to avoid xrun
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