Dear,
i have a weird issue with Proxmox servers, hosted currently in OVH, and i am having troubles troubleshooting the issue, i do not think it's OVH related, but not 100% positive.
Hopefully some of you folks can point me to the right direction.
two dedicated servers, clustered using private network vRack, all traffic, private and public goes through the vRack, witch is vmbr1.
One server is Intel, the other is AMD EPYC.
I use a VM with public and private IP's internet facing, and other VM's with private IP's behind it, the VM can be simple debian machine or a Pfsense one.
The issue summary is that whenever i have a VM, on the AMD EPYC server NATING traffic for another VM, the throughput is limited to 5 or 10Mbits, the internet facing machine itself or any other machine directly connected to vmbr1 has full speed, 500Mbits+
Migrating the default gateway VM or the internet facing one to the Intel server everything works as expected.
I have tried several things to conclude the issue could be with the CPU
speedtest run through iperf or public speed tests websites
- change virtual network card on VM's
- change CPU models to KVM and host
- increased RAM and CPU
- SDN with VLAN's
- Bridges
- VM to VM through public network and private network
Please note there are no limitations or capping in Proxmox host or VM configurations
Please also find below
Intel server
AMD Server
i have a weird issue with Proxmox servers, hosted currently in OVH, and i am having troubles troubleshooting the issue, i do not think it's OVH related, but not 100% positive.
Hopefully some of you folks can point me to the right direction.
two dedicated servers, clustered using private network vRack, all traffic, private and public goes through the vRack, witch is vmbr1.
One server is Intel, the other is AMD EPYC.
I use a VM with public and private IP's internet facing, and other VM's with private IP's behind it, the VM can be simple debian machine or a Pfsense one.
The issue summary is that whenever i have a VM, on the AMD EPYC server NATING traffic for another VM, the throughput is limited to 5 or 10Mbits, the internet facing machine itself or any other machine directly connected to vmbr1 has full speed, 500Mbits+
Migrating the default gateway VM or the internet facing one to the Intel server everything works as expected.
I have tried several things to conclude the issue could be with the CPU
speedtest run through iperf or public speed tests websites
- change virtual network card on VM's
- change CPU models to KVM and host
- increased RAM and CPU
- SDN with VLAN's
- Bridges
- VM to VM through public network and private network
Please note there are no limitations or capping in Proxmox host or VM configurations
Please also find below
Intel server
Code:
proxmox-ve: 8.2.0 (running kernel: 6.8.12-2-pve)
pve-manager: 8.2.5 (running version: 8.2.5/12c0a59769080547)
proxmox-kernel-helper: 8.1.0
proxmox-kernel-6.8: 6.8.12-2
proxmox-kernel-6.8.12-2-pve-signed: 6.8.12-2
proxmox-kernel-6.8.8-4-pve-signed: 6.8.8-4
proxmox-kernel-6.8.4-3-pve-signed: 6.8.4-3
proxmox-kernel-6.5.13-6-pve-signed: 6.5.13-6
proxmox-kernel-6.5: 6.5.13-6
amd64-microcode: 3.20240820.1~deb12u1
ceph-fuse: 16.2.11+ds-2
corosync: 3.1.7-pve3
criu: 3.17.1-2
glusterfs-client: 10.3-5
ifupdown2: 3.2.0-1+pmx9
intel-microcode: 3.20240813.1~deb12u1
libjs-extjs: 7.0.0-4
libknet1: 1.28-pve1
libproxmox-acme-perl: 1.5.1
libproxmox-backup-qemu0: 1.4.1
libproxmox-rs-perl: 0.3.4
libpve-access-control: 8.1.4
libpve-apiclient-perl: 3.3.2
libpve-cluster-api-perl: 8.0.7
libpve-cluster-perl: 8.0.7
libpve-common-perl: 8.2.2
libpve-guest-common-perl: 5.1.4
libpve-http-server-perl: 5.1.0
libpve-network-perl: 0.9.8
libpve-rs-perl: 0.8.10
libpve-storage-perl: 8.2.4
libspice-server1: 0.15.1-1
lvm2: 2.03.16-2
lxc-pve: 6.0.0-1
lxcfs: 6.0.0-pve2
novnc-pve: 1.4.0-4
proxmox-backup-client: 3.2.7-1
proxmox-backup-file-restore: 3.2.7-1
proxmox-firewall: 0.5.0
proxmox-kernel-helper: 8.1.0
proxmox-mail-forward: 0.2.3
proxmox-mini-journalreader: 1.4.0
proxmox-offline-mirror-helper: 0.6.7
proxmox-widget-toolkit: 4.2.3
pve-cluster: 8.0.7
pve-container: 5.2.0
pve-docs: 8.2.3
pve-edk2-firmware: not correctly installed
pve-esxi-import-tools: 0.7.2
pve-firewall: 5.0.7
pve-firmware: 3.13-2
pve-ha-manager: 4.0.5
pve-i18n: 3.2.3
pve-qemu-kvm: 9.0.2-3
pve-xtermjs: 5.3.0-3
qemu-server: 8.2.4
smartmontools: 7.3-pve1
spiceterm: 3.3.0
swtpm: 0.8.0+pve1
vncterm: 1.8.0
zfsutils-linux: 2.2.6-pve1AMD Server
Code:
proxmox-ve: 8.2.0 (running kernel: 6.8.12-2-pve)
pve-manager: 8.2.7 (running version: 8.2.7/3e0176e6bb2ade3b)
proxmox-kernel-helper: 8.1.0
proxmox-kernel-6.8: 6.8.12-2
proxmox-kernel-6.8.12-2-pve-signed: 6.8.12-2
proxmox-kernel-6.8.12-1-pve-signed: 6.8.12-1
amd64-microcode: 3.20240820.1~deb12u1
ceph-fuse: 16.2.11+ds-2
corosync: 3.1.7-pve3
criu: 3.17.1-2
glusterfs-client: 10.3-5
ifupdown2: 3.2.0-1+pmx9
intel-microcode: 3.20240813.1~deb12u1
libjs-extjs: 7.0.0-4
libknet1: 1.28-pve1
libproxmox-acme-perl: 1.5.1
libproxmox-backup-qemu0: 1.4.1
libproxmox-rs-perl: 0.3.4
libpve-access-control: 8.1.4
libpve-apiclient-perl: 3.3.2
libpve-cluster-api-perl: 8.0.7
libpve-cluster-perl: 8.0.7
libpve-common-perl: 8.2.3
libpve-guest-common-perl: 5.1.4
libpve-http-server-perl: 5.1.1
libpve-network-perl: 0.9.8
libpve-rs-perl: 0.8.10
libpve-storage-perl: 8.2.5
libspice-server1: 0.15.1-1
lvm2: 2.03.16-2
lxc-pve: 6.0.0-1
lxcfs: 6.0.0-pve2
novnc-pve: 1.4.0-4
proxmox-backup-client: 3.2.7-1
proxmox-backup-file-restore: 3.2.7-1
proxmox-firewall: 0.5.0
proxmox-kernel-helper: 8.1.0
proxmox-mail-forward: 0.2.3
proxmox-mini-journalreader: 1.4.0
proxmox-offline-mirror-helper: 0.6.7
proxmox-widget-toolkit: 4.2.3
pve-cluster: 8.0.7
pve-container: 5.2.0
pve-docs: 8.2.3
pve-edk2-firmware: not correctly installed
pve-esxi-import-tools: 0.7.2
pve-firewall: 5.0.7
pve-firmware: 3.13-2
pve-ha-manager: 4.0.5
pve-i18n: 3.2.3
pve-qemu-kvm: 9.0.2-3
pve-xtermjs: 5.3.0-3
qemu-server: 8.2.4
smartmontools: 7.3-pve1
spiceterm: 3.3.0
swtpm: 0.8.0+pve1
vncterm: 1.8.0
zfsutils-linux: 2.2.6-pve1