[SOLVED] CPUset not working in Ubuntu 22.04
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Back to playing with kernels and each time I change kernels in SO, I have to do the above fix. Suggest making the fix part of standard SO.
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This is a thread I hadn't seen.
I've come up against cpuset not working in 22.04 when testing SO 1.3 (details over in those threads). Should I be trying the above? Should everyone, ultimately, be trying the above (oh, no!)?
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(11-Dec-2023, 03:16 PM)uglymusic Wrote: This is a thread I hadn't seen.
I've come up against cpuset not working in 22.04 when testing SO 1.3 (details over in those threads). Should I be trying the above? Should everyone, ultimately, be trying the above (oh, no!)?
CPUset is definitely worth trying.
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(11-Dec-2023, 05:48 PM)Snoopy8 Wrote: (11-Dec-2023, 03:16 PM)uglymusic Wrote: This is a thread I hadn't seen.
I've come up against cpuset not working in 22.04 when testing SO 1.3 (details over in those threads). Should I be trying the above? Should everyone, ultimately, be trying the above (oh, no!)?
CPUset is definitely worth trying.
I've had it working on Raspberry Pi OS and SO 1.2.x but struggled to convince myself there was any benefit . Maybe on Ubuntu...? I'll add it to my list.
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(11-Dec-2023, 08:45 PM)uglymusic Wrote: I've had it working on Raspberry Pi OS and SO 1.2.x but struggled to convince myself there was any benefit . Maybe on Ubuntu...? I'll add it to my list. Please have a read of this
https://www.snakeoil-os.net/wiki/Configu...oil#cpuset
Some people have reported a SQ improvement by enabling cpusets but for others, it made no difference. The intent here is to isolate the music processes from system processes. I took it further.
https://www.snakeoil-os.net/forums/Threa...-processes
However, I have returned to the simple SO way because something wrong when I recently changed hardware to an Intel NUC Element and Ubuntu versions.
I have found that Cpuset is particularly useful when there is a Real Time (RT) kernel in use. The combination of cpusets and RT kernel has given a maximum latency (measured using Cyclictest) of around 10 milliseconds, spread evenly across 4 CPUs. The result is better SQ. My challenge is to apply what I have done with Ubuntu on the NUC to Ubuntu on a Pi. I suspect using Raspian is too far a leap?
Note that I am probably the craziest SO user here, even building my own RT kernel!!
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(12-Dec-2023, 03:26 PM)uglymusic Wrote: I feel a deep, deep hole opening up
Can you apply what you've learned to the RPi 5 while you're at it? Welcome to my asylum which doubles as my rabbit warren! . Never put together a Pi, so maybe I should start with the Pi 5 ??? .
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