EVE-NG Quick Performance Tune

Here are a few quick tips to gain some serious performance in EVE-NG for your network labs!

Please note I am assuming you are running EVE-NG as a VM within ESXI aka nested virtualization.

1 – Build your nodes with VIRTIO Adapters when you can.

2 – Install latest VirtIO drivers and then commit the nodes.

For example after you created your Windows VMs, download these drivers inside and install. Then commit the changes via qemu.

https://docs.fedoraproject.org/en-US/quick-docs/creating-windows-virtual-machines-using-virtio-drivers/index.html

how to commit changes:

https://www.eve-ng.net/documentation/howto-s/148-howto-save-your-settings-to-be-as-default-on-qemu-node

3- Disable spectre and meltdown patches to regain performance (ONLY ON LAB ESXI HOSTS)

NOTE: THIS IS A SERIOUS SECURITY VULNERABILITY AND ONLY SHOULD BE USED FOR HOMELAB. IF YOU HAVE PRODUCTION VMS HERE DO NOT DO THIS.

For this you just need to add the following to /etc/vmware/config after you SSH into your ESXI hosts: (use vi/etc/vmware/config, press i for insert, then enter the config in last line, then press esc, then type :wq! and hit enter)

cpuid.7.edx = “—-:00–:—-:—-:—-:—-:—-:—-“

Then reload VMs. (No host reboot required)

4 – Disable Meltdown and Spectre kernal features in Ubuntu (eve-ng vm). Also enable Transparent Huge pages for performance improvements.
sudo nano /etc/default/grub and add “transparent_hugepage=always spectre_v2=off nopti” inside of GRUB_CMDLINE_LINUX_DEFAULT. Then run “sudo update-grub” and reload the eve-ng VM.