System

Mother Board:  Gigabyte B760M WIFI DDR4

CPU: 12th Gen Intel® Core™ i5-12500

Memory:  24GB DDR4

GPU: No GPU

 

Hard Drives

Cache:  Crucial/Micron Client SSDs 480 GB  SATA 3.3

Parity: No parity

Array Disk's: 8 x 4TB (mix of WD and Seagate)

Ive been experiencing an issue for the last month or so where I see 100% CPU usage by SHFS. Ive been keeping an eye on it with Netdata and it starts and stops at exactly the same time each day, 3 x 1 hour sessions approx.

A couple of points Ive noted during these CPU spikes,

• Minimal / NIL CPU usage by any dockers

• Minimal / NIL disk usage showing on the Unraid dashboad, either in numbered reads/writes or B/s

I set the Appdata and Downloads shares to Cache exclusive already, this seems to be the only suggestion I could find when searching previous threads. I plan to update the BIOS today.

My Unraid knowledge is fairly limited but any suggestions would be greatly appreciated 🙂

I can export Diagnostics if required.

7 hours ago, Gracey400 said:

I set the Appdata and Downloads shares to Cache exclusive already

Do you have anything else using /mnt/user at those times?

22 hours ago, JorgeB said:

Do you have anything else using /mnt/user at those times?

I didn't think so, but turns out I have Rclone (mirrors my Google Drive for backup) scheduled for around that time.

I ran lsof | grep /mnt/user this morning while the CPU usage was high and seen it backing up a bunch of files with huge files paths due to what looks like a Google Drive sync error ie Parent Folder/Folder 1/Parent Folder/Folder 1/Parent Folder/Folder 1 x 100 😑

Ive disabled Rclone and will report back tomorrow, but I'm hopeful I've found the cause.

On 2/19/2026 at 4:56 PM, Gracey400 said:

Rclone (mirrors my Google Drive for backup)

backing up a bunch of files with huge files paths

It was this ☺️