Maximum Usable Memory

[Teapot]

Hi
I have Proxmox Server With 192GB RAM. (Usable 181GB)
I have a question. I don't have any swap.
In my server when I was use approximate 155-165GB Proxmox GUI-SSH not working. I have to restart the server for it to work again.
What is the usable limit on Proxmox?
Example when I was using VMware Esx I can you use %99 of memory.

Thank you.

 

[dcsapak]

normally you can use all (besides ~2GB for the host)
do you run zfs? if yes, zfs can use up to half of your host memory if you do not tune it

best check with a tool like htop/free or monitoring what is using the ram

 

[Teapot]

normally you can use all (besides ~2GB for the host)
do you run zfs? if yes, zfs can use up to half of your host memory if you do not tune it

best check with a tool like htop/free or monitoring what is using the ram

No zfs.
Swapiness 0 and swapoff
When usage near 160GB proxmox crashe. Vms working but no SSH no gui. İts normal?

 

[dcsapak]

İts normal?

no, so please check what exactly is using the ram like i wrote

 

[Teapot]

no, so please check what exactly is using the ram like i wrote

Okey i will check today.
No zfs no ceph etc. Only kvm vm's.
When proxmox gui using ram near 165GB/181GB crashing.
Only vms are working.

 

[Teapot]

Hi, free -m

              total        used        free      shared  buff/cache   available
Mem:         185348      129559       53395         781        2394       53706
Swap:             0           0           0

vmstat

procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
12  0      0 54717348 292464 2159944    0    0    94   184    2    5 26  4 66  3