11.2. Permanently setting an offload feature


If you have identified a specific offload feature that limits the performance on your host, you can permanently enable or disable it, depending on its current state.

If you permanently enable or disable an offload feature, NetworkManager ensures that the feature still has this state after a reboot.

Prerequisites

  • You identified a specific offload feature to limit the performance on your host.

Procedure

  1. Identify the connection profile that uses the network interface on which you want to change the state of the offload feature:

    # nmcli connection show
    NAME     UUID                                  TYPE      DEVICE
    Example  a5eb6490-cc20-3668-81f8-0314a27f3f75  ethernet  enp1ss0
    ...
  2. Permanently change the state of the offload feature:

    # nmcli connection modify <connection_name> <feature> <on|off>
    • For example, to permanently disable IPsec Encapsulating Security Payload (ESP) offload in the Example connection profile, enter:

      # nmcli connection modify Example ethtool.feature-esp-hw-offload off
    • For example, to permanently enable accelerated Receive Flow Steering (aRFS) filtering in the Example connection profile, enter:

      # nmcli connection modify Example ethtool.feature-ntuple on
  3. Reactivate the connection profile:

    # nmcli connection up Example

Verification

  • Display the output states of the offload features:

    # ethtool -k enp1s0
    ...
    esp-hw-offload: off
    ntuple-filters: on
    ...
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