memory

Is it normal that empty PVE hosts take up to 11% memory usage? My hosts have 125,57GiB and 13,55 GiB is already in use without any VMs on it. I already found a few "consumers", but I can't explain the entire 13,55 GiB ZFS ARC: 1,3 GiB RSS: 4,3 GiB SLAB: 1,2GiB Still ~6GiB that I can't explain...

Posting this because the existing threads on this are all titled by the cause ("tmpfs wrong size"), and nobody hitting it searches for that. They search the symptoms - and those searches currently return threads about slow storage and HA timeouts, which sends you the wrong way for hours. This is...

Hi, I am trying to understand how memory allocation works in Proxmox VE compared to VMware. My environment contains both Linux and Windows VMs. For all VMs, the following memory options are enabled: Ballooning Device Allow KSM For each VM, Memory and Minimum Memory are configured with the...

Hi everyone, We have been running PBS with an S3 backend for some time and recently started experiencing memory exhaustion issues that required manual server restarts to recover. After some investigation we would like to share what we have found so far and get some feedback from the community...

Hi all, I've been testing live memory expansion (hotplug) on a Proxmox VM and ran into some behavior I'd like to understand better. I'm not reporting a bug — I just want to understand why it works this way. Setup: Proxmox VE (latest stable) 6gb ram node 4 cpu node VM with hotplug enabled...

My server has recently been hanging at almost random times with the only way to sort it out is by force restarting the server - with the issue then happing again after a few weeks. From the looks of it, it seems to be a memory issue but what confuses me is that how the lxc's are able to cause...

The reported memory usage of a VM in its summary and graphs includes RAM used by caching inside a VM. The reported memory usage of a node in its summary includes RAM used by caching inside VMs and LXCs. The reported memory usage of an LXC in its summary does not include RAM used by caching...

hi! Not all RAM is used, help! Filesystem Type LVM (ext4), not ZFS. free, available 25GB I changed the values vm.swappiness = 10 or vm.swappiness = 1 but nothing changed. HTOP

Currently, I have two virtual machines running on my PVE, one with OpenWRT and the other with TrueNAS. The memory usage of the TrueNAS virtual machine is quite peculiar. After booting up, TrueNAS itself only occupies about 2 GB of memory, and at this point, there is no ARC cache. Regardless of...

This article is about a question frequently answered by community members. It was inspired by UdoBs great FabU posts ( https://forum.proxmox.com/search/7994094/?q=FabU&c[title_only]=1&c[users]=UdoB ) and aims to give an in depth-explaination to an often asked question so it can be referenced in...

I'm a complete beginner who hasn't even installed Proxmox yet. I'm currently considering whether to install it. For the hardware where I plan to install Proxmox, I'm planning to change the memory and disk configuration within a month. Therefore, I think it would be better to install Proxmox...

Hi! Some servers in my cluster are experiencing unrelated RAM consumption. For example there is a host running two kvm with 120GB dedicated memory + zfs arc 16GB. But at the same time the memory consumed by the host is 468GB. 468 - 120 -120 - 16 = 212 What can another 212GB be used for...

Hi Devs, Using memory hotplug according to the proxmox wiki I succesfully increased and decreased the memory size of a Debian/Ubuntu guest. However when booting a virtual machine with memory hot-plug enabled and more than 21GB memory the guest OS can kernel panic with the following error...

We have a couple of pretty beefy VM hosts running the latest VE and have on one host a fairly beefy VM because it is running a Mastodon server with 200 active accounts on it. However, the displayed memory usage in the Proxmox VE dashboard for this VM always shows 97% and higher memory...

Hi all. I need help with a memory leak that I'm experiencing. Essentially what I'm seeing is the memory usage gradually increasing over several days until it utilizes nearly 100% of RAM, fills up the swap, and then oom-killer begins killing processes. Eventually the system becomes unresponsive...

Hi, everyone. I am using windows server 2025(like windows 11) as as VM in PVE. I installed virtio-win-gt-x64 and wirtio-win-guest-tools. But the balloon still dont work. I have 512G memory in host and set "16G min, 128G max and balloon on" to VM. The VM always use 128G after start. I type "info...

I need some help here. This is my first encounter with Proxmox. I made the switch after ESXi's free version went away. Here's my hardware: Dell Poweredge R710 128GB of RAM, 24 x Intel(R) Xeon(R) CPU X5670 @ 2.93GHz (2 Sockets), 6x 6TB 12Gb/s SAS drives connected to an HBA configured as a...

Hi, Recently I set up a monitoring stack in my virtualized K8s cluster (Prometheus, Grafana) and set up node exporters on many VMs/nodes, including my PVE and PBS nodes. Not soon after I started getting alerts regarding major page faults (hundreds over half a minute, sometimes every half hour...

I have installed Windows 11 on my Proxmox server (PVE version 8.1.4) and using q35 machine (version 8.1). I have DDR5 RAM installed on my physical machine. And the RAM sticks do show up as DDR5 on Proxmox host. I am also passing through Nvidia GPU to Windows VM which passes through perfectly...

The TL;DR I'd apperciate any comments on the below notes for capturing forensic data. I've highlighted a few specific questions, but any other notes, comments, corrections, or insight would be welcome. Background I work in the digital forensics field and, given Proxmox's recent jump in...