[Solved] Periodic ping spikes on virtualised OPNsense

[GenuineJakob]

Hi,
I am completely new to firewalls and OPNsense. I switched from my previous Unify installation to a N6005. I installed Proxmox and virtualised OPNsense on it. Currently installed is OPNsense 22.7.7_1-amd64, working with the default configuration + IPS/IDS.

Unfortunately, my ping has periodic lag spikes:

Do you have any idea which settings could affect this? What information can I provide so you can diagnose my problem easier?


Kind regards,
Jakob

[Marin BERNARD]

Hi,

How often do you see latency spikes ? There is no time unit indication on the graph you supplied. Also, how many firewall aliases do you have ?

We run many virtualized OPNsense instances on Proxmox too and had to deal with minutely CPU spikes.
See: https://forum.opnsense.org/index.php?topic=17953.msg81563#msg81563

Hope it helps,

--
Marin

[GenuineJakob]

Hi, thank you very much for your reply.

The timespan of the graph were 98 seconds.
I solved my issue yesterday by switching from Linux network bridges to PCI via IO_MMU. Now everything is working fine and the spikes are gone.


Kind regards,
Jakob