Memory usage

[dpearceFL]

I'm sure this has a simple answer but it escapes me. I noticed my VMs were running slow and partially unresponsive. Once I have all of the VMs stopped, the memory usage graph showed this:

The PVE host has only been running 8 hours.

Once I rebooted it and with no VMs running, I get this:


How can I track down where the memory is going?

 

[leesteken]

ZFS or Filesystem cache? Are you using ZFS? What is the output of free -m when memory usage is high?

 

[dpearceFL]

I am using ZFS so it's maybe the ZFS cache, but would it consume so much memory as to impact PVE? Seems like a real con to using ZFS...

 

[leesteken]

I am using ZFS so it's maybe the ZFS cache, but would it consume so much memory as to impact PVE? Seems like a real con to using ZFS...

ZFS uses up to 50% of your memory. You can read all about it in the Proxmox manual.