04-02-2022, 03:54 PM
(03-28-2022, 02:17 PM)Tim Curtis Wrote:(03-27-2022, 08:29 PM)fdealexa Wrote: Hello everybody,
since the functionality of the "loopback" option was released I have noticed some anomalies. After many tests, with various releases, software components, etc, I can now be sure that there is a problem related to enabling this option.
The last test I did today with a scratch configuration (8.0.2).
Configuration:
Raspberry pi: 4 - 4GB,
DAC hat: I tried with some cards,
no additional software components.
Symptom:
significant increase in CPU load and slight increase in memory occupation.
Repeatability:
with the "loopback" option set to "ON", starting to listen to a radio, the system freezes after some hours.
During this period of time, keeping under control with "TOP" you notice that the "MPD" process grows (in CPU and Memory occupation).
With the same configuration and the same radio station (Jazz24), but with the "loopback" in "OFF" the CPU and Memory load (even after 3 hours) remain stable at the same value.
It is essential that there are no pauses during playback: if you "pause" or "stop" or change the source, the problem clears up..
I tried to search if there was already a "thread" on this problem, but I did not find anything: please excuse me if I am wrong.
Please let me know if it is appropriate to open a different thread.
Thank you all for your attention and greetings,
Francesco
No issues on my end after 4 1/2 hours.
Code:pi@sig:~ $ moodeutl -m
^CU: 1.2 GHz | LOAD: 2% | TEMP: 46°C | RAM_USED: 20% | DISK_USED: 38% | DISK_FREE: 4.3G | FPM_POOL: 12 workers
Hi Tim, hi everyone.
I am dismayed but after further tests I still haven't solved the "loopback" anomaly.
The tests carried out (the results of which are shown in the annex) were based on:
2 raspberry Pi-4B 1.1 4GB;
2 different SD cards (brand and size);
1 Audiophonics ES9028 / 9038 DAC (above on screenshots);
1DAC IQAudIO Pi-DAC + (below on the screenshots) (I got it just for compatibility of Tim's results);
moOde audio player Release 8.0.2 2022-03-25;
No basic configuration (I left all the default parameters: even local time, keyboard, etc.), only "Named I2S device".
Obviously the other parameter that I have configured is that of the "loopback".
Do you have any other suggestions?
Thank you and greetings,
Francesco


