destroyedlolo Posted August 5, 2023 Share Posted August 5, 2023 Hello, I'm running Armbian on the original (LeMaker) A20 powered BananaPI : cat /etc/issue Armbian 21.08.6 Buster \l I did an apt-get upgrade few days back, and since, it's CPU load is always around 1.00 even if I don't run my custom application (obviously, it wasn't the case before). Nothing special in /var/logs/messages, but top show me a kernel process always on top : top - 15:03:43 up 1 day, 17:40, 1 user, load average: 0,98, 1,03, 1,12 Tasks: 112 total, 2 running, 110 sleeping, 0 stopped, 0 zombie %Cpu(s): 4,5 us, 6,3 sy, 0,0 ni, 89,0 id, 0,0 wa, 0,0 hi, 0,2 si, 0,0 st MiB Mem : 993,9 total, 583,3 free, 119,7 used, 291,0 buff/cache MiB Swap: 497,0 total, 497,0 free, 0,0 used. 840,4 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 26647 root 20 0 0 0 0 R 10,3 0,0 1:44.71 kworker/1:0+events_freezable_power_ 32375 laurent 20 0 103912 51264 5472 S 10,3 5,0 1:20.54 Selene 3664 laurent 20 0 7588 2372 2016 R 0,7 0,2 0:01.23 top 14 root 20 0 0 0 0 I 0,3 0,0 2:55.81 rcu_sched 1927 root 20 0 1408 336 292 S 0,3 0,0 10:37.20 BananaLEDd 31455 root 20 0 0 0 0 I 0,3 0,0 0:00.26 kworker/1:3-mm_percpu_wq I did some googling but it doesn't help to find out what is this events_freezable_power_ In another hand, it doesn't explain this 1.00 load as you can see it consums only 10 to 15% of the CPU as well as my own custom application. So any tip, help, whatever is welcome. Thanks 0 Quote Link to comment Share on other sites More sharing options...
hexdump Posted August 5, 2023 Share Posted August 5, 2023 not sure if it is related, but there was something similar in the past - see: 0 Quote Link to comment Share on other sites More sharing options...
Werner Posted August 5, 2023 Share Posted August 5, 2023 This happened several times over the past years across almost all SoCs. Personally I discovered this first on the OPi1+ with H6 SoC and vendor images. Now I notice this on RK3588 when using 5.10.160 (rk4.1 branch and up) kernel... 0 Quote Link to comment Share on other sites More sharing options...
destroyedlolo Posted August 6, 2023 Author Share Posted August 6, 2023 Thanks for links. I'm not concerned by AR-305 as I have an HDMI attached (It's my home automation dashboard, images you can see on my Twitter profile). But i don't have a SATA disk on this machine. The only google hits I found about this issue is related to disk access : as the only one I have is the SD card, I'm a bit fearing about its duration. But nothing is clear about this particular kworker : what is its goal ? 0 Quote Link to comment Share on other sites More sharing options...
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