Jean Croix

Yesterday I helped a musician with an unknown USB box to get it to work under Windows / ASIO4ALL. She had no sound on mic and headphones, except occasionally for a short moment. What helped was activating the device's internal buffers in the ASIO settings.

if Windoes, look for Behringer 2902 driver. ASIO4all might not work as with the UM2 and others using the same chip (PCM2902). They need this dedicated driver but Behringer has discontinued support for it, that's why they don't have it in their downloads, but you will find it on the web.

gordon what is your system? win? lin? mac?

skrul, thank you for this input. I've been trying to understand the business model of telegraf, they say it's open source, how can I get it onto the RPI? I use the same startup script (the link doesn't work because of the extra dot). Sometimes I would like to invoke the server GUI but how can I do it, the server running from the startup script in no gui mode?

Hi DonC, yes I'm using the commandline option -T. I think otherwise Jamulus would run just on one core? Yes the Pi must have variable frequency, since the command sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq gives me 800 when no client connected, 900 when one and 1500 for two clients. Debian 10 and Jamulus 3.6.1 I will do some more experiments and connect a screen to omit ssh. On the odroid, why doesn't Jamulus use all six cores?

the load average over 1 didn't worry my too much since the raspi has 4 cores...

... I forgot to mention that I was watching the server over an SSH connection. Could the CPU load of the SSH server be fooling me?

Thank you, I tried systemctl which produced a long list of services that all seem essential to the functioning of the kernel. However I took a snapshot of the cpu load chart in htop (taskmanager). This was with 10 connected clients (all on the same but different raspi). The interesting thing is that the CPU load changes that much and jumps from one core to another. I didn't expect this behaviour, what I would finf logical is an even distribution over the cores and a smooth graph. Another interesting...