High upload usage in idle

Operating System ZimaOS
1

I’ve noticed high upload usage in idle, and I can’t figure out what the problem might be. How can I check and stop this high consumption? This screenshot is from Docker Beszel; you can see that the usage isn’t from my Docker containers. I have Samba sharing enabled, but I don’t have any sharing links. I’ve also disabled the AI ​​option in developer mode. What worries me is that I’m using an SSD with a relatively low read/write limit, but I have HDDs that could handle that usage. I don’t know what’s being transmitted or which drive it’s on.

Screenshot_20260209_120638_Samsung Internet
Screenshot_20260209_120638_Samsung Internet1080×2400 202 KB

2

This doesn’t appear to be Docker traffic. The graphs show host-level network + disk activity, which usually means the system is serving data, not writing it.

High upload ≠ SSD writes. It means data is being sent out over the network (often reads from disk).

Most common causes on ZimaOS:

  • An SMB client pulling data (Windows/macOS/media device indexing)
  • Background rclone mount or sync
  • Files app or media scan touching the root FS

To identify the source while the spike is happening, run:

iftop -i eth0
smbstatus
iotop -o
ss -tunap

If SMB shows active sessions, that’s your answer.
If none of these show activity, post the outputs, otherwise it’s guesswork.

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