I have an Ubuntu Server Jellyfin VM running on Proxmox, with 1GB of minimum memory and 3.5GB of maximum memory. However, the VM only seems to see around ~550MB.
According to proxmox balloon info:
balloon: actual=1024 max_mem=3584 total_mem=526 free_mem=86 mem_swapped_in=205017088 mem_swapped_out=476983296 major_page_faults=41280 minor_page_faults=659005 last_update=1790501670
And inside the ubuntu server VM:
server@jellyfin:~$ free -h
total used free shared buff/cache available
Mem: 526Mi 392Mi 106Mi 26Mi 253Mi 134Mi
Swap: 4.0Gi 303Mi 3.7Gi
The heavy swapping is leading to significant lag/loading times. The host has enough memory, the VM has been allocated enough memory, it just fails to see it.
VM config inside of Proxmox:
root@proxmox-node01:~# qm config 100
balloon: 1024
boot: order=scsi0;ide2;net0
cores: 2
cpu: x86-64-v2-AES
cpulimit: 1
description: network-isolated VM instance;%0Aisolation%3A%0A- HTTPS only (no local)%0A- DROP all outbound connections except HTTPS, including SSH [NO LOCAL]%0A- ACCEPT inbound SSH connections, and inbound Jellyfin connections%0A- ClamAV security installed
hostpci0: 0000:00:02
ide2: local:iso/ubuntu-26.04.1-live-server-amd64.iso,media=cdrom,size=2859240K
memory: 3584
meta: creation-qemu=11.0.0,ctime=1789703804
name: jellyfin
net0: virtio=BC:24:11:A6:E4:96,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
protection: 1
scsi0: internal-hdd:100/vm-100-disk-0.qcow2,iothread=1,size=480G
scsihw: virtio-scsi-single
smbios1: uuid=b58c983d-e945-4cd2-ae6a-da03fc0865e5
sockets: 1
tags: internal
vmgenid: 0df33631-6220-4cd2-8148-93d9023dea16
Solutions that I have attempted:
– Changing the allocated memory
– Disabling ballooning
– Restarting the VM
– Shutting down all other VMs/LXCs on the host.
How do I fix this issue?
