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Reporting back to let ya'll know that i resolved this by adding:
hw.pci.honor_msi_blacklist="0"

This has let the VM use all 4 cores and the load distribution is very even and i'm getting significantly increased throughput! Happy days!

WAN is RJ45 Direct out to my Colocation provider (through esxi d-switch), surely I wouldn't be able to use hardware queues as this is virtualised correct? Only one interrupt is assigned to each interface on checking

In the default settings, all network traffic is handled by core 0 only; this is done to enforce strong ordering for protocols requiring it, while keeping cpu affinity. You can set the following sysctl tunables: net.isr.maxthreads="-1" and net.isr.bindthreads="1" to enable traffic to be handled by all cores.

See this https://calomel.org/freebsd_network_tuning.html to find all kind of tunables to play with ;)

This appears to have made very minimal difference in my case, most of the loading is still sitting on that core, is their any other way to balance it?

Hey all,

Been eyeing up my core router recently and noticed that out of the 4 virtual cores assigned only 1 is actually getting load pushed onto it, the setup is very basic just a small OSPF area and some basic firewall rules, is this behaviour normal when only pushing at max 500mbp/s of traffic? The VM is using VMX interfaces on ESXI 7

(sorry about the image size)


Edit:
Updated title to something that wasn't wrote by 1am me...

By chance would you know of a guide for it? My googlefu isn't giving me much information for installing frr on the cli, rather using just the webui

Hey guys and gals,

Sorry if I have posted this in the wrong section! I've recently been setting up a small OSPF area over my Zerotier VPN and at first I was using the web interface to configure OSPF but found that it doesn't have the options for manual addresses so I started to configure via vtysh however on rebooting my router (even after a copy run start) the Web UI seems to be overwriting my configuration, so how can I install FRR without it installing the webui components?

Thanks!