I tried to follow suit to this post:
https://forum.proxmox.com/threads/slow-internet-performance-in-the-vm.121133/
# Problem
The throughput on my Home Server (Ubuntu 22.04.3 VM on Proxmox) to the internet isn't what I expected it to be. It's closer to 35mbps as opposed to my theoretical internet which is 1gbps.
## General Notes
Here are various speed tests from all wired devices on my network. Physically speaking, the NAS and Home Server are on the exact same switch, while the Personal Computer is wired, but elsewhere.
## Network
The network topology is pretty flat. I have a singular switch that plugs into the LAN port of my pfsense based router, the WAN port is directly plugged into the modem. That's basically it between the home server and the outside world.
## Speed Test CLI
Home Server (Ubuntu 22.04.3 VM on Proxmox, x.x.x.113)
Personal Computer (Windows 11, Direct Install, x.x.x.145)
NAS (TrueNAS Scale, Direct Install, x.x.x.121)
## iperf
Inside same LAN
Home Server (Ubuntu 22.04.3 VM on Proxmox) <--> Personal Computer (Windows 11, Direct Install)
1gbps~
Home Server <--> NAS (TrueNAS Scale, Direct Install)
1gpbs~
## Replicating
I cloned the VM in question. The problem followed the clone as to be expected.
I created a brand new VM from an Ubuntu 22.04.3 image and it does not exhibit the same problem.
## Problematic VM Details
qm config
top
Something I noticed was the absurd number of network interfaces. I'm assuming these are generated by docker? They all show UP except the docker0 interface. ( Can provide specifics on request)
## Proxmox Details
pveversion
## Attempts to Fix
Honestly, I've mainly been trying to figure out where the actual problem is from. There's a lot I've left out ahead of this (originally noticed the performance issue from inside a docker container).
The only thing I've messed with with the MTU value because it seemed like low hanging fruit and easy to implement but it had no effect (and frankly it was a hail mary without digging in further). I have yet to revert that change.
https://forum.proxmox.com/threads/slow-internet-performance-in-the-vm.121133/
# Problem
The throughput on my Home Server (Ubuntu 22.04.3 VM on Proxmox) to the internet isn't what I expected it to be. It's closer to 35mbps as opposed to my theoretical internet which is 1gbps.
## General Notes
Here are various speed tests from all wired devices on my network. Physically speaking, the NAS and Home Server are on the exact same switch, while the Personal Computer is wired, but elsewhere.
## Network
The network topology is pretty flat. I have a singular switch that plugs into the LAN port of my pfsense based router, the WAN port is directly plugged into the modem. That's basically it between the home server and the outside world.
## Speed Test CLI
Home Server (Ubuntu 22.04.3 VM on Proxmox, x.x.x.113)
$ speedtest-cli --secureRetrieving speedtest.net configuration...Testing from REDACTED...Retrieving speedtest.net server list...Selecting best server based on ping...Hosted by REDACTED [194.20 km]: 30.579 msTesting download speed................................................................................Download: 35.80 Mbit/sTesting upload speed......................................................................................................Upload: 25.69 Mbit/sPersonal Computer (Windows 11, Direct Install, x.x.x.145)
Idle Latency: 14.98 ms (jitter: 0.82ms, low: 13.91ms, high: 15.99ms) Download: 694.97 Mbps (data used: 1.2 GB) 183.62 ms (jitter: 56.45ms, low: 17.39ms, high: 615.47ms) Upload: 24.47 Mbps (data used: 32.6 MB) 24.35 ms (jitter: 20.73ms, low: 13.64ms, high: 292.62ms) Packet Loss: 0.0%NAS (TrueNAS Scale, Direct Install, x.x.x.121)
Retrieving speedtest.net configuration...Testing from REDACTED...Retrieving speedtest.net server list...Selecting best server based on ping...Hosted by REDACTED [246.80 km]: 18.836 msTesting download speed................................................................................Download: 568.19 Mbit/sTesting upload speed......................................................................................................Upload: 23.54 Mbit/s## iperf
Inside same LAN
Home Server (Ubuntu 22.04.3 VM on Proxmox) <--> Personal Computer (Windows 11, Direct Install)
1gbps~
Connecting to host 192.168.68.113, port 5201[ 5] local 192.168.68.145 port 52986 connected to 192.168.68.113 port 5201[ ID] Interval Transfer Bitrate[ 5] 0.00-1.00 sec 114 MBytes 950 Mbits/sec[ 5] 1.00-2.00 sec 113 MBytes 949 Mbits/sec[ 5] 2.00-3.01 sec 115 MBytes 949 Mbits/sec[ 5] 3.01-4.01 sec 113 MBytes 949 Mbits/sec[ 5] 4.01-5.01 sec 113 MBytes 949 Mbits/sec[ 5] 5.01-6.00 sec 112 MBytes 949 Mbits/sec[ 5] 6.00-7.01 sec 115 MBytes 950 Mbits/sec[ 5] 7.01-8.01 sec 113 MBytes 949 Mbits/sec[ 5] 8.01-9.01 sec 113 MBytes 949 Mbits/sec[ 5] 9.01-10.00 sec 113 MBytes 949 Mbits/sec- - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate[ 5] 0.00-10.00 sec 1.11 GBytes 949 Mbits/sec sender[ 5] 0.00-10.06 sec 1.10 GBytes 943 Mbits/sec receiverHome Server <--> NAS (TrueNAS Scale, Direct Install)
1gpbs~
Connecting to host 192.168.68.121, port 5201[ 5] local 192.168.68.113 port 33856 connected to 192.168.68.121 port 5201[ ID] Interval Transfer Bitrate Retr Cwnd[ 5] 0.00-1.00 sec 114 MBytes 956 Mbits/sec 0 3.15 MBytes[ 5] 1.00-2.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes[ 5] 2.00-3.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 3.00-4.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 4.00-5.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 5.00-6.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 6.00-7.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 7.00-8.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 8.00-9.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes[ 5] 9.00-10.00 sec 110 MBytes 923 Mbits/sec 0 3.15 MBytes- - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.00 sec 1.09 GBytes 935 Mbits/sec 0 sender[ 5] 0.00-10.07 sec 1.09 GBytes 929 Mbits/sec receiver## Replicating
I cloned the VM in question. The problem followed the clone as to be expected.
Excluding output here, can provide upon request, just don't want to spin all the services down since collisions...I created a brand new VM from an Ubuntu 22.04.3 image and it does not exhibit the same problem.
Retrieving speedtest.net configuration...Testing from REDACTED...Retrieving speedtest.net server list...Selecting best server based on ping...Hosted by REDACTED [246.80 km]: 41.458 msTesting download speed................................................................................Download: 588.93 Mbit/sTesting upload speed......................................................................................................Upload: 26.62 Mbit/s## Problematic VM Details
qm config
$ qm config 103agent: 1boot: order=scsi0;ide2;net0cores: 3cpu: x86-64-v2-AESide2: none,media=cdrommemory: 8192meta: creation-qemu=8.1.2,ctime=1702869034name: container-servicesnet0: virtio=BC:24:11:EB:FF:A5,bridge=vmbr0,firewall=1,mtu=6000numa: 0onboot: 1ostype: l26scsi0: vmdata:vm-103-disk-0,iothread=1,size=64Gscsi1: nas-smb-homelab-services:103/vm-103-disk-0.qcow2,iothread=1,size=64Gscsihw: virtio-scsi-singlesmbios1: uuid=70175999-904c-4631-9ebd-26842a808698sockets: 1startup: up=10tags: homelabvmgenid: e86a2904-b4c6-48fc-9318-11a58d9ac72dtop
$ top -n 1top - 22:36:51 up 9:57, 3 users, load average: 1.25, 0.82, 1.04Tasks: 365 total, 1 running, 364 sleeping, 0 stopped, 0 zombie%Cpu(s): 27.1 us, 18.8 sy, 0.0 ni, 54.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 stMiB Mem : 7937.7 total, 1735.8 free, 3435.4 used, 2766.4 buff/cacheMiB Swap: 3911.0 total, 3909.1 free, 1.9 used. 4139.4 avail MemSomething I noticed was the absurd number of network interfaces. I'm assuming these are generated by docker? They all show UP except the docker0 interface. ( Can provide specifics on request)
## Proxmox Details
pveversion
$ pveversion -vproxmox-ve: 8.2.0 (running kernel: 6.8.4-3-pve)pve-manager: 8.2.2 (running version: 8.2.2/9355359cd7afbae4)proxmox-kernel-helper: 8.1.0proxmox-kernel-6.8: 6.8.4-3proxmox-kernel-6.8.4-3-pve-signed: 6.8.4-3proxmox-kernel-6.5.13-5-pve-signed: 6.5.13-5proxmox-kernel-6.5: 6.5.13-5proxmox-kernel-6.5.11-7-pve-signed: 6.5.11-7proxmox-kernel-6.5.11-4-pve-signed: 6.5.11-4ceph-fuse: 17.2.7-pve3corosync: 3.1.7-pve3criu: 3.17.1-2glusterfs-client: 10.3-5ifupdown2: 3.2.0-1+pmx8intel-microcode: 3.20231114.1~deb12u1ksm-control-daemon: 1.5-1libjs-extjs: 7.0.0-4libknet1: 1.28-pve1libproxmox-acme-perl: 1.5.1libproxmox-backup-qemu0: 1.4.1libproxmox-rs-perl: 0.3.3libpve-access-control: 8.1.4libpve-apiclient-perl: 3.3.2libpve-cluster-api-perl: 8.0.6libpve-cluster-perl: 8.0.6libpve-common-perl: 8.2.1libpve-guest-common-perl: 5.1.2libpve-http-server-perl: 5.1.0libpve-network-perl: 0.9.8libpve-rs-perl: 0.8.8libpve-storage-perl: 8.2.1libspice-server1: 0.15.1-1lvm2: 2.03.16-2lxc-pve: 6.0.0-1lxcfs: 6.0.0-pve2novnc-pve: 1.4.0-3proxmox-backup-client: 3.2.3-1proxmox-backup-file-restore: 3.2.3-1proxmox-kernel-helper: 8.1.0proxmox-mail-forward: 0.2.3proxmox-mini-journalreader: 1.4.0proxmox-offline-mirror-helper: 0.6.6proxmox-widget-toolkit: 4.2.3pve-cluster: 8.0.6pve-container: 5.1.10pve-docs: 8.2.2pve-edk2-firmware: 4.2023.08-4pve-esxi-import-tools: 0.7.0pve-firewall: 5.0.7pve-firmware: 3.11-1pve-ha-manager: 4.0.4pve-i18n: 3.2.2pve-qemu-kvm: 8.1.5-6pve-xtermjs: 5.3.0-3qemu-server: 8.2.1smartmontools: 7.3-pve1spiceterm: 3.3.0swtpm: 0.8.0+pve1vncterm: 1.8.0zfsutils-linux: 2.2.3-pve2## Attempts to Fix
Honestly, I've mainly been trying to figure out where the actual problem is from. There's a lot I've left out ahead of this (originally noticed the performance issue from inside a docker container).
The only thing I've messed with with the MTU value because it seemed like low hanging fruit and easy to implement but it had no effect (and frankly it was a hail mary without digging in further). I have yet to revert that change.
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