Jackfreqd....

[Aleks]

Recently I found about this

https://gareus.org/oss/jackfreqd/start

Is anybody here using it? What is your experience, does it help? Also, if I install it, do I have to disable indicator-cpufreq and other services related to CPU managing?

[khz]

Sounds very interesting. The first version was released "on 12 Dec 2010 - v0.0.3" and the current version is from 28 February 2020 - 0.2.0? I had never heard of jackfreqd before. I noted it down.
Edit: Found
https://github.com/jackaudio/jackaudio. ... _and_Myths
https://wiki.thingsandstuff.org/Audio#J ... figuration
https://wiki.linuxaudio.org/wiki/system ... _processes

[sysrqer]

Just gave it a try but doesn't seem to work for me:

Code: Select all

sudo jackfreqd -P -w
Found 8 scalable units:  -- 1 'CPU' per scalable unit
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies: No such file or directory
  cpu0: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu1/cpufreq/scaling_available_frequencies: No such file or directory
  cpu1: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu2/cpufreq/scaling_available_frequencies: No such file or directory
  cpu2: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu3/cpufreq/scaling_available_frequencies: No such file or directory
  cpu3: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu4/cpufreq/scaling_available_frequencies: No such file or directory
  cpu4: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu5/cpufreq/scaling_available_frequencies: No such file or directory
  cpu5: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu6/cpufreq/scaling_available_frequencies: No such file or directory
  cpu6: 1200Mhz - 3600Mhz (25 steps)
/sys/devices/system/cpu/cpu7/cpufreq/scaling_available_frequencies: No such file or directory
  cpu7: 1200Mhz - 3600Mhz (25 steps)
Connect: can't connect named futex name = jack_sem.0_default_RtMidi Input Client err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_RtMidi Output Client err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_VCV Rack err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_RtApiJackCount err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_RtApiJackCount err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_RtApiJackInfo err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_RtApiJackInfo err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_RtApiJackCount err = No such file or directory
Connect: can't connect named futex name = jack_sem.0_default_VCV Rack-01 err = No such file or directory

[Aleks]

It might be because you have to use sudo -i. I installed it, but didn't try it with elevated privileges, I must say, because, after I bumped into the same problem as you did, I tried once more another solution suggested here (the last post):

viewtopic.php?f=6&t=14759&start=15

So experimented a bit with the script on startup. Instead of PCH in my case it should have been PCH,0. After that didn't work either, I left out the "96000 &", and this time it works! No xruns whatsoever. I had a single xrun when I put aside my guitar after full 20 minutes of noodling around without sound being interrupted with all sorts of crackling noise and occasional silence as it happened before, and when I started to close all those windows I had open: a pdf document qsampler, rackarack, hydrogen, virtual midi keyboard and chrome. Mind you, I had my cpufreq indicator set to powersave and also I played alongside songs on YouTube, so wifi had to be on too. And yet, not a single dropout. So yeah, the culprit might be the duplex feature.

The only problem is that music app windows seem to lag a bit on opening and closing. Sometimes I have to force close them, but, oh well, nothing's perfect...