Intel X520-DA2 getting ~4gb not 10gb

[TeleFragger]

Running iperf3, I am getting roughly 4.5gb. New to proxmox but 2 physical windows machines, I got 9.08gb so I know it can and something I might need to tweek?

New to proxmox and learning a lot.
Appreciate any assistance
Or is this expected, botus, etc?

 

[TeleFragger]

after posting this, google said to do
Key Proxmox & VM Settings

1. Check NIC Speed & Duplex: Use ethtool -s <interface> speed 10000 duplex full on the Proxmox host to force 10Gbps and full duplex if autonegotiation fails.
2. Multiqueue: In the VM's hardware settings (GUI), select the virtio NIC and set "Multiqueue" to 8 (or higher) for better performance.

That got me to 5.35gb

then google said to set iperf3 with -P 8 switch and now I am getting 6.15gb... guessing I should be happy here!

 

[_gabriel]

if you iperf3 inter VM, hw NIC is not used, it's a software network flow, bounded to CPU.

 

[TeleFragger]

if you iperf3 inter VM, hw NIC is not used, it's a software network flow, bounded to CPU.

makes sense...

how about this one?
Alma 10 OS doesnt go over 1gb?

 

[_gabriel]

we need to know the two "sides" specs and if inter VM or from/to physical.

 

[santiagobiali]

In proxmox, check your ring buffer size:

ethtool -g enp5s0
    Ring parameters for enp5s0:
    Pre-set maximums:
    RX:             8192 <--
    RX Mini:        n/a
    RX Jumbo:       n/a
    TX:             8192 <--
    Current hardware settings:
    RX:             8192
    RX Mini:        n/a
    RX Jumbo:       n/a
    TX:             8192
    RX Buf Len:             n/a
    CQE Size:               n/a
    TX Push:        off
    TCP data split: n/a

And set it to max: ethtool -G enp5s0 rx 8192 tx 8192

It it solves your issue, then it needs to be set every time you reboot:

cat /etc/network/interfaces
iface enp5s0 inet manual
        post-up ethtool -G enp5s0 rx 8192 tx 8192

 

[TeleFragger]

In proxmox, check your ring buffer size:

ethtool -g enp5s0
    Ring parameters for enp5s0:
    Pre-set maximums:
    RX:             8192 <--
    RX Mini:        n/a
    RX Jumbo:       n/a
    TX:             8192 <--
    Current hardware settings:
    RX:             8192
    RX Mini:        n/a
    RX Jumbo:       n/a
    TX:             8192
    RX Buf Len:             n/a
    CQE Size:               n/a
    TX Push:        off
    TCP data split: n/a

And set it to max: ethtool -G enp5s0 rx 8192 tx 8192

It it solves your issue, then it needs to be set every time you reboot:

cat /etc/network/interfaces
iface enp5s0 inet manual
        post-up ethtool -G enp5s0 rx 8192 tx 8192

nice... adding..
i had

ethtool -g enx90e2bae68254
Ring parameters for nic2:
Pre-set maximums:
RX:                     8192
RX Mini:                n/a
RX Jumbo:               n/a
TX:                     8192
TX push buff len:       n/a
Current hardware settings:
RX:                     512
RX Mini:                n/a
RX Jumbo:               n/a
TX:                     512
RX Buf Len:             n/a
CQE Size:               n/a
TX Push:                off
RX Push:                off
TX push buff len:       n/a
TCP data split:         n/a

now i have

ethtool -g enx90e2bae68254
Ring parameters for nic2:
Pre-set maximums:
RX:                     8192
RX Mini:                n/a
RX Jumbo:               n/a
TX:                     8192
TX push buff len:       n/a
Current hardware settings:
RX:                     8192
RX Mini:                n/a
RX Jumbo:               n/a
TX:                     8192
RX Buf Len:             n/a
CQE Size:               n/a
TX Push:                off
RX Push:                off
TX push buff len:       n/a
TCP data split:         n/a

 

[TeleFragger]

been following various youtubes, etc.. and i bet this can be cleaned up or some not needed...

thoughts?

auto lo
iface lo inet loopback

iface nic0 inet manual

iface nic1 inet manual

iface nic2 inet manual

iface nic3 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.247/24
        gateway 192.168.1.1
        bridge-ports nic0
        bridge-stp off
        bridge-fd 0

auto vmbr1
iface vmbr1 inet manual
        bridge-ports nic2
        bridge-stp off
        bridge-fd 0

auto LocalOnly
iface LocalOnly inet manual
        bridge-ports nic3
        bridge-stp off
        bridge-fd 0

cat /etc/network/interfaces
iface enx90e2bae68254 inet manual
        post-up ethtool -G enx90e2bae68254 rx 8192 tx 8192

source /etc/network/interfaces.d/*