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High Kworker CPU RN516 6.10.1
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High Kworker CPU RN516 6.10.1
Does anyone else have a high kworker CPU load that is always present (even after a reboot) in 6.10.1:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3896 root 20 0 0 0 0 R 54.5 0.0 1:20.29 kworker/0:3
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Re: High Kworker CPU RN516 6.10.1
FWIW, I am not seeing this on my RN526
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Re: High Kworker CPU RN516 6.10.1
No issues here.
root@ReadyNAS516:~# top top - 09:41:10 up 6 min, 1 user, load average: 0.02, 0.30, 0.21 Tasks: 244 total, 1 running, 243 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.0 us, 0.0 sy, 0.0 ni, 99.9 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem: 3931184 total, 1189584 used, 2741600 free, 4964 buffers KiB Swap: 1566716 total, 0 used, 1566716 free. 596340 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4057 root 20 0 710580 15892 12640 S 0.3 0.4 0:01.32 leafp2p 5486 root 20 0 28928 3168 2536 R 0.3 0.1 0:00.05 top 1 root 20 0 204452 7168 5284 S 0.0 0.2 0:01.68 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0 5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:+ 7 root 20 0 0 0 0 S 0.0 0.0 0:00.24 rcu_sched 8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh 9 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/0 10 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
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Re: High Kworker CPU RN516 6.10.1
Hi @Iridahonda, I do not have that on any of my nases (RN104, RN204, RN426). However, when researching a bit on the inet I found some resources trying to blame the kernel for the behaviour you are describing.
For example see here: https://unix.stackexchange.com/questions/22851/why-is-kworker-consuming-so-many-resources-on-linux-3...
Now I wonder, whether you might have installed app kernel+ for whatever reason and if yes, what might happen, if you would disable that temporarily.
Kind regards
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Re: High Kworker CPU RN516 6.10.1
@Retired_Member wrote:
Now I wonder, whether you might have installed app kernel+ for whatever reason and if yes, what might happen, if you would disable that temporarily.
This seems unlikely to be the cause. Based on the Kernel Plus description, it just adds some additional modules. That shouldn't increase the CP load on the NAS (unless you actively use them). There's no way to disable those modules, you'd need to uninstall it.
It could be some other app in the system, or a maintenance/background function ( auto defrag, file indexing, ...) There could be something in the log zip that would explain it.
Personally I'd wait a bit, and see if the problem resolves.