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Add NIC SR-IOV and performance tuning units

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sriov-enp4s0.service allocates VFs on the ixgbe ports at boot and applies
persistent VF MACs via set-ixgbe-vfmacs-enp4s0.sh, so guests keep stable
addresses across host reboots. The VF MAC assignments are currently all
commented out.

nic-performance-tweaks.service raises ring buffers and txqueuelen on the
uplinks and vmbr0.

unused/ holds the equivalent pair for the retired enp130s0 adapter.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
ergosteur
2026-08-06 15:44:58 +00:00
co-authored by Claude Opus 5
parent 25b96af194
commit 5a661d728f
5 changed files with 52 additions and 0 deletions
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systemd-system/nic-performance-tweaks.service
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[Unit]
Description=NIC performance tuning for enp4s0f0np0, enp4s1f12np12 and vmbr0
After=network-online.target
Wants=network-online.target
[Service]
Type=oneshot
ExecStart=/usr/sbin/ethtool -G enp4s1f12np12 rx 4096 tx 4096
ExecStart=/sbin/ip link set enp4s1f12np12 txqueuelen 10000
ExecStart=/usr/sbin/ethtool -G enp4s0f0np0 rx 4096 tx 4096
ExecStart=/sbin/ip link set enp4s0f0np0 txqueuelen 10000
ExecStart=/sbin/ip link set vmbr0 txqueuelen 10000
RemainAfterExit=true
[Install]
WantedBy=multi-user.target