I'm running OMV 5 in a vm on Proxmox. The VM has 8GB ram allocated.
I've noticed that I'm pretty much always running at 95% RAM usage, even when OMV isn't doing anything. All I'm running is mergerfs, snapraid, docker running Plex, and a few SMB shares.
After a reboot it starts at a pretty low percentage, but slowly creeps up (or quickly if I move any files around, or stream from Plex) to 95%.
The performance page tells me that 6.9GB of my ram is being used for "page cache".
Is this normal behaviour? Shouldn't it go back to a low baseline usage after a while?
Thanks very much,