[SOLVED] Ram usage disparity between pve summary and pbs dashboard

abranca

Active Member
Mar 6, 2017
45
5
28
36
Hi, i have a disparity in ram usage between pve summary and pbs dashboard.
My pbs is installed on vm and qemu-guest-agents are present and balloning is active.
I am attaching three pictures of the ram usage that confuse me and i do not understand which one is correct.

Thanks to all

PVE details:
Code:
proxmox-ve: 7.2-1 (running kernel: 5.13.19-6-pve)
pve-manager: 7.2-7 (running version: 7.2-7/d0dd0e85)
pve-kernel-5.15: 7.2-6
pve-kernel-helper: 7.2-6
pve-kernel-5.13: 7.1-9
pve-kernel-5.15.39-1-pve: 5.15.39-1
pve-kernel-5.15.35-3-pve: 5.15.35-6
pve-kernel-5.15.35-2-pve: 5.15.35-5
pve-kernel-5.15.35-1-pve: 5.15.35-3
pve-kernel-5.15.30-2-pve: 5.15.30-3
pve-kernel-5.13.19-6-pve: 5.13.19-15
pve-kernel-5.13.19-5-pve: 5.13.19-13
pve-kernel-5.13.19-4-pve: 5.13.19-9
pve-kernel-5.13.19-3-pve: 5.13.19-7
pve-kernel-5.13.19-2-pve: 5.13.19-4
ceph-fuse: 15.2.15-pve1
corosync: 3.1.5-pve2
criu: 3.15-1+pve-1
glusterfs-client: 9.2-1
ifupdown2: 3.1.0-1+pmx3
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-1
libknet1: 1.24-pve1
libproxmox-acme-perl: 1.4.2
libproxmox-backup-qemu0: 1.3.1-1
libpve-access-control: 7.2-4
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.2-2
libpve-guest-common-perl: 4.1-2
libpve-http-server-perl: 4.1-3
libpve-storage-perl: 7.2-7
libspice-server1: 0.14.3-2.1
lvm2: 2.03.11-2.1
lxc-pve: 5.0.0-3
lxcfs: 4.0.12-pve1
novnc-pve: 1.3.0-3
proxmox-backup-client: 2.2.5-1
proxmox-backup-file-restore: 2.2.5-1
proxmox-mini-journalreader: 1.3-1
proxmox-widget-toolkit: 3.5.1
pve-cluster: 7.2-2
pve-container: 4.2-2
pve-docs: 7.2-2
pve-edk2-firmware: 3.20210831-2
pve-firewall: 4.2-5
pve-firmware: 3.5-1
pve-ha-manager: 3.4.0
pve-i18n: 2.7-2
pve-qemu-kvm: 6.2.0-11
pve-xtermjs: 4.16.0-1
qemu-server: 7.2-3
smartmontools: 7.2-pve3
spiceterm: 3.2-2
swtpm: 0.7.1~bpo11+1
vncterm: 1.7-1
zfsutils-linux: 2.1.4-pve1

PBS details:
Code:
proxmox-backup: 2.2-1 (running kernel: 5.15.39-1-pve)
proxmox-backup-server: 2.2.5-1 (running version: 2.2.5)
pve-kernel-5.15: 7.2-6
pve-kernel-helper: 7.2-6
pve-kernel-5.13: 7.1-9
pve-kernel-5.4: 6.4-7
pve-kernel-5.15.39-1-pve: 5.15.39-1
pve-kernel-5.15.35-2-pve: 5.15.35-5
pve-kernel-5.13.19-6-pve: 5.13.19-15
pve-kernel-5.13.19-2-pve: 5.13.19-4
pve-kernel-5.4.143-1-pve: 5.4.143-1
pve-kernel-5.4.65-1-pve: 5.4.65-1
ifupdown2: 3.1.0-1+pmx3
libjs-extjs: 7.0.0-1
proxmox-backup-docs: 2.2.5-1
proxmox-backup-client: 2.2.5-1
proxmox-mini-journalreader: 1.2-1
proxmox-widget-toolkit: 3.5.1
pve-xtermjs: 4.16.0-1
smartmontools: 7.2-pve3
zfsutils-linux: 2.1.4-pve1
 

Attachments

  • pbs.png
    pbs.png
    67 KB · Views: 6
  • pve.png
    pve.png
    53.5 KB · Views: 6
Last edited:

Matthias.

Proxmox Staff Member
Staff member
Jan 17, 2022
201
50
28
I'd guess that's because of the cache. try echo 1 > /proc/sys/vm/drop_caches and compare the memory usage afterwards

PBS is aware of the cache and will leave it out, while PVE does not know of it.
 

Matthias.

Proxmox Staff Member
Staff member
Jan 17, 2022
201
50
28
Great! Please mark the thread as solved (click edit, there's a dropdown next to the title) so others with the same question find it more easily
 
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