Proxmox with Intel big little cpu running Opnsense?

[etnicor]

Hello,
I don't really know where to put this question. I guess it's part Proxmox, part Opnsense question or maybe it's just a general Linux question..

I have gotten a frankenstein motherboard with a i5-12500H mobile cpu. Planning to run opnsense in a vm in proxmox 7.4 with 6.2 kernel.
From my understanding there should be better support in 6.2 kernel for big little Intel cpu's..

My question is on single core performance. If I give all cores to Opnsense will Linux kernel schedule heavy load to the P-Cores? For example when filtering a 10gigabit network stream. Or will it just be random if an E or P core will be used?

 

[pille99]

------------------------------ i5 details -----------------------------------
Anzahl der Kerne
12

Anzahl der Performance-cores

4

Anzahl der Efficient-cores

8

Anzahl der Threads

16


-------------------------- opnsense requirements -------------------------------
Minimum


The minimum specification to run all OPNsense standard features that donot need disk writes, means you can run all standard features, exceptfor the ones that require disk writes, e.g. a caching proxy (cache) or intrusion detectionand prevention (alert database).

Processor	1 GHz dual core cpu
RAM	2 GB
Install method	Serial console or video (vga)
Install target	SD or CF card with a minimum of 4 GB, use nano images for installation.

Table: Minimum hardware requirements


Reasonable


The reasonable specification to run all OPNsense standard features,means every feature is functional, but perhaps not with a lot of usersor high loads.

Processor	1 GHz dual core cpu
RAM	4 GB
Install method	Serial console or video (vga)
Install target	40 GB SSD, a minimum of 2 GB memory is needed for the installer to run.

Table: Reasonable hardware requirements


Recommended


The recommended specification to run all OPNsense standard features,means every feature is functional and fits most use cases.

Processor	1.5 GHz multi core cpu
RAM	8 GB
Install method	Serial console or video (vga)
Install target	120 GB SSD

Table: Recommended hardware requirements


to begin with: it doesnt make sense to add all CPU to opnsense
the use of CPU is random
you can read here more
https://forum.proxmox.com/threads/cpu-cores-and-threads.65923/
there is a good explaination (we dont need to repeat

 

[etnicor]

That thread did not answer my question. My question is not about threads it's about P and E cores and how load is distributed to which type of core.

opnsense requirements are usually not specified for throughput with filter rules so they are of no use..

From my understanding Intel had improved the scheduler in 6.2 kernel to put correct load between P/E cores but you say for VM's it does not matter it will always be random?

Ofc. I could always pin the P-cores but then E cores will never be used.