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[SOLVED] nwatchdog - 100% CPU usage across all cores

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  • Community Expert

Hi all,

Ive noticed twice now, that my server will start to act sluggish, still accessible via web/gui, however plex streams will start buffering for users.

When I check the dashboard, I see all cores are maxed out 100%.

Screenshot 2025-11-18 at 9.33.45 PM.png

Viewing htop, I see nwatchdog processes are the culprit.

Screenshot 2025-11-18 at 9.33.55 PM.png

I am not too familiar with how to deep dive into processes, to figure out where it's coming from.

I am open to any help, ID'ing what is causing this.

After reboot, it runs fine for approx 2 days, before it'll come back.

Thank you!

Edited by shelfactor

Solved by JorgeB

  • Community Expert

My guess would be a docker container, or maybe a plugin. Try disabling docker and see if it happens again. A more broad effort is running in safe mode.

Diagnostics may help. Consider enable syslog server just in case.

  • Community Expert
  • Solution

Also post output of: ps aux | grep nwatchdog

  • 5 months later...
  • Author
  • Community Expert

Marking this old thread as solved... Was an uncofirmed bug at the time. No longer an issue.

  • shelfactor changed the title to [SOLVED] nwatchdog - 100% CPU usage across all cores

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