Slow internet speed in a virtual machine

F

fanava

New Member
Mar 11, 2020
16
9
3
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Hello. What could be the problem.
network bridge vmbr3.

host
Code: 
Retrieving speedtest.net configuration...
Testing from Filanco LLC (***.9.128)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by RETN (Moscow) [1.61 km]: 1.423 ms
Testing download speed................................................................................
Download: 78.29 Mbit/s
Testing upload speed................................................................................................
Upload: 124.93 Mbit/s

virtual
Code: 
Retrieving speedtest.net configuration...
Testing from Filanco LLC (***.9.160)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by RETN (Moscow) [1.61 km]: 2505.169 ms
Testing download speed................................................................................
Download: 2.39 Mbit/s
Testing upload speed................................................................................................
Upload: 3.33 Mbit/s
root@krd22:~#

interfaces
Code: 
iface enp1s0f0 inet manual

iface enp1s0f1 inet manual

#iface vmbr0 inet static

auto vmbr1
iface vmbr1 inet static
    address  192.168.100.1
    netmask  24
    bridge-ports none
    bridge-stp off
    bridge-fd 0

#iface vmbr2 inet static

auto vmbr3
iface vmbr3 inet static
    address  123.123.9.128
    netmask  255.255.255.0
    gateway  123.123.9.1
    bridge-ports enp1s0f0
    bridge-stp off
    bridge-fd 0

    post-up  echo 1 > /proc/sys/net/ipv4/ip_forward
    post-up  iptables -t nat -A POSTROUTING -s '192.168.100.0/24' -o vmbr3 -j MASQUERADE
    post-down iptables -t nat -D POSTROUTING -s '192.168.100.0/24' -o vmbr3 -j MASQUERADE
 
Last edited:
Moayad said:
Hi,


Please post the config of your VM qm config <VMID> and pveversion -v as well :)
Click to expand...
Code: 
root@pve1:~# qm config 100
bootdisk: scsi0
cores: 2
ide2: none,media=cdrom
memory: 4096
name: vm2-website2
net0: virtio=E6:A7:F8:50:FA:5D,bridge=vmbr3,firewall=1
numa: 0
ostype: l26
scsi0: SATA3:100/vm-100-disk-0.qcow2,size=150G
scsihw: virtio-scsi-pci
smbios1: uuid=0c9b1c3e-a469-44dd-98ac-a85fd0fd5221
sockets: 2
vcpus: 4
vmgenid: 4ad15f33-348b-45fd-bb12-b77af68ac618
root@pve1:~#


root@pve1:~# pveversion -v
proxmox-ve: 6.1-2 (running kernel: 5.3.10-1-pve)
pve-manager: 6.1-3 (running version: 6.1-3/37248ce6)
pve-kernel-5.3: 6.0-12
pve-kernel-helper: 6.0-12
pve-kernel-5.3.10-1-pve: 5.3.10-1
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.0.2-pve4
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: 0.8.35+pve1
ksm-control-daemon: 1.3-1
libjs-extjs: 6.0.1-10
libknet1: 1.13-pve1
libpve-access-control: 6.0-5
libpve-apiclient-perl: 3.0-2
libpve-common-perl: 6.0-9
libpve-guest-common-perl: 3.0-3
libpve-http-server-perl: 3.0-3
libpve-storage-perl: 6.1-2
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve3
lxc-pve: 3.2.1-1
lxcfs: 3.0.3-pve60
novnc-pve: 1.1.0-1
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.1-1
pve-cluster: 6.1-2
pve-container: 3.0-14
pve-docs: 6.1-3
pve-edk2-firmware: 2.20191002-1
pve-firewall: 4.0-9
pve-firmware: 3.0-4
pve-ha-manager: 3.0-8
pve-i18n: 2.0-3
pve-qemu-kvm: 4.1.1-2
pve-xtermjs: 3.13.2-1
qemu-server: 6.1-2
smartmontools: 7.0-pve2
spiceterm: 3.1-1
vncterm: 1.6-1
zfsutils-linux: 0.8.2-pve2
root@pve1:~# qm config <100>
 
download files speed 5mb/s.

Screenshot_55.png

ubuntu 14.04

Screenshot_59.png

I don’t understand how it works.
 
Last edited:
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