CPU usage near 100% all the time

[Proggie]

My TS-419P is similar but different. Noticed it only after the recent QTS 4.3.3.1315 Build 20200611 update. CPU is 100% all the time, but only if I'm logged into the web GUI. Then I see the kernel_processes and python processes taking most of the CPU, and I can't do a lot in the GUI before it becomes unresponsive. While this is going on if I ssh in (after enabling ssh temporarily) then top doesn't show "kernel_processes" just the python ones. If I log out of the web GUI then CPU goes down to anywhere between 2-40%. I have malware and antivirus up to date and a very strong password plus 2FA and have most services turned off including ssh.

[herrcafe]

FWIW I had to restore the NAS to factory settings and rebuild the shares. Not the most pleasant experience.

[wigo]

I have also had a high CPU over the past few days (95-100%).
I saw this old topic but would still like to share my finding for future problems.

I have an old NAS (TS-412), which I only use for storage of movies and music.
I also have an Nvidia Shield which gets movies and music from the TS-412. The Shield is running a Plex server and the Plex player. I have mounted the NAS on the Shield and shared the folders in Plex Server.
The NAS doesn't have to do much, just pass on the data to the Shield.
A few days ago Plex had a problem that affected many users. Me too.
After one day the problem was solved but I had to reassign all folders of the NAS on the Shield (in Plex).
Then I saw the CPU skyrocket. I didn't find anything strange, no malware etc. But I still could not access data (movies of music) on the Shield because the CPU of the NAS was at 100%. So everything crashed.
Finally I found out that I had to remount the NAS on the Shield (so not only remapping the folders in Plex)!
And that solved the problem. So because Plex had a problem, my Shield had a problem and so did the NAS.
There was nothing wrong with the NAS, the Shield was the problem after they had a problem at Plex.
The solution was quite simple but you just have to discover it. Maybe my information will be useful for someone in the future.

[lf.puc]

Hello

Mine is an older TS431U . The load was always higher than 20. CPU between 99 and 100%. Using top, I saw some nfsd processes running.
I disabled the NFS v4 service (kept NFS v2 and 3) and the CPU usage dropped to 25%.
Some years ago I had to disabled the antivirus. This made a huge difference as well.
Hope this will help QNAP engineers to tune nfsd for NFSv4. Maybe ARMv7 isn't enough for all the software.

[dolbyman]

This wont help QNAP at all...unless you open a ticket (QNAP support does not come here)