I got a used desktop with decent specs, I think, for 2013. But I can't get audio/Jack as smooth as my similarly-aged laptop. As the title suggests, I can start accumulating xruns while doing nothing; and if I AM doing something, they are likely to be audible glitches.
This desktop has a low-level nVidia graphics card; I'm wondering how much of my problem stems from that, and if it's worth buying a used AMD card at these blockchain-crazed prices.
realTimeConfigQuickScan is happy with my setup. Based on xruncounter, these settings perform pretty well:
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Samplerate is 48000Hz
Buffersize is 192
Buffer/Periods 2
I'm running AVLinux-MXE, so I assume Jack is all correct. I have trouble understanding the RealTime permissions, but I'm guessing that's not my issue. Here's some of that info, because that's typically the first thing someone will ask...
I do know I'm in "audio," and audio has RT permission.
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$ groups ahpn
ahpn : ahpn lp dialout cdrom floppy sudo audio dip video plugdev users input netdev lpadmin scanner sambashare
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$ ulimit -r -l
real-time priority (-r) 90
max locked memory (kbytes, -l) unlimited
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$ cat /etc/security/limits.conf
@audio - rtprio 90 # maximum realtime priority
@audio - memlock unlimited # maximum locked-in-memory address space (KB)
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$ ps -eLo rtprio,cls,pid,pri,nice,cmd | grep "FF" | sort -r
5 FF 4110 45 - a2jmidid -e
10 FF 3985 50 - /usr/bin/jackdbus auto