High RAM Load PVE Host 8.0.4

mhert

Well-Known Member
Jul 5, 2017
59
0
46
44
Hello.

I have a pve host with several virtual maschines. The host consumes always a high amount of the installed ram. Even if no machine is started.

Some details:

1698220955665.png

At the moment there are 3 virtual machines running which are configured with 38 GB of ram in total. But as you can see the host comsumes nearly all of the installed memory.

1698221123102.png

Is this normal or is there something wrong?

When I shut down 2 of the 3 vm's ram usage is still high (the remaining vm is configured with 16GB RAM, but comsumes only 6-7 at the moment):

pve host

1698221340575.png

1698221514846.png

runnig vm (server2019):

1698221458059.png


Storage:

1698221628404.png

1698221654812.png


Thanks in advance,

Oliver
 
Code:
arcstat
    time  read  miss  miss%  dmis  dm%  pmis  pm%  mmis  mm%  size     c  avail
12:22:08    14     0      0     0    0     0    0     0    0   17G   17G    18G
 
it's oob...

what's a rational limit?
As much as you can spare? Or as little as still works for you. Note that unused memory is useless and if you don't have a problem, just let the cache do its thing.
ZFS should shrink the ARC when other services need memory but that does not always work quickly enough in practice when starting VMs, in my experience.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!