asking new future - add possibility assign specific core to vm

[mateqsz]

Hi,
maybe some devs thinking add possibility assign specific core to vm? What i mean, i want use 12900t as my server but i would like opensense/truenas vm use only e cores and my windows vm use only p core or exist that but i dont know how to do it. why? need best performance on windows but need power efficiency when windows is off.

 

[leesteken]

You can already set core/thread affinity for each virtual CPU of a VM: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#qm_cpu_resource_limits

 

[mateqsz]

example: 12900t has 8c/16t p cores and 8c/8t e cores.
vm 1) opensense 4 e core
vm 2) truenas scale 4e core +1 p core
vm 3) windows 7 p core

 

[mateqsz]

You can already set core/thread affinity for each virtual CPU of a VM: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#qm_cpu_resource_limits

exist yt tutorial? xD

 

[leesteken]

exist yt tutorial? xD

I don't know. I linked the manual (you can also use the Help button in Proxmox) and there are several threads about this on the forum: https://forum.proxmox.com/search/6431563/?q=affinity&o=date

 

[mateqsz]

here new boxes, if choose cpu type intel shows up new box: socket, p cores and e cores would brilliant and easy to use

 

[sb-jw]

Just by the way, the screenshot isn't from your current setup?

But now you have to differentiate a bit: PVE may run on consumer hardware, but it is still a hypervisor intended for the data center. I am not aware of such a CPU construct in the enterprise environment and, especially with virtualization, such a CPU would make no sense at all. The general binding of VMs to specific cores is also not a feature that I would regularly need in this environment.

 

[mateqsz]

Just by the way, the screenshot isn't from your current setup?

But now you have to differentiate a bit: PVE may run on consumer hardware, but it is still a hypervisor intended for the data center. I am not aware of such a CPU construct in the enterprise environment and, especially with virtualization, such a CPU would make no sense at all. The general binding of VMs to specific cores is also not a feature that I would regularly need in this environment.

not mine stolen from internet xD

why? its 2024 and proxmox is most popular hypervisor in homelabs and there is most important power connsumption. i take that 12900t and have 3 systems on one cpu add gpu with low idle power consumption have best home server

 

[sb-jw]

Saving electricity is not really an issue in the data center. Here I want to get maximum performance from the hardware. Of course I don't want to operate a nuclear power plant either. But I don't argue in the data center about whether my switches need 250W per each or not. And a hypervisor is not something that was originally created in the home network, it is something from the enterprise environment to achieve the highest possible density per rack.

In my opinion, it would also be the wrong development if Proxmox included more features for the home network; there are much more important things such as load balancing, fault tolerance or maintenance mode. Ultimately, the enterprise customers are the ones who pay for the development of Proxmox. I would say that very few people have a PVE license for their home network.

You shouldn't forget that, even if Proxmox is popular. There are also already some developments that are for home users. For example, I have never in my life had the need to pass a device through to a VM or bind specific CPU cores to a VM. However, I regularly have to free up my hypervisor to carry out maintenance. There is also a regular requirement for a VM with FT and not just HA. The PBS was also an important development to have a good backup option that is also at the level of Veeam.
I am therefore of the opinion that Proxmox takes the needs into account, but I am also of the opinion that, as an enterprise user, I do not want to have all of it. It is therefore important to find a good consensus here. Perhaps the solution would be to implement different views.

 

[mateqsz]

you dont want future because you dont need that and want block make it? xD
great thinking xD
see, you dont need passthrough pcie hardware but exist and now i can build home server on 10500t +64gb ram with 2x sfp+ nic with 2 vms opensense and truenas scale. i got cheapest 10gbs router with 6 threats and 12gb ram

and what wrong with it?

 

[sb-jw]

Your statement is completely wrong. I'm not blocking anything here because I'm not even in a position to do so. I also said that there could simply be two views. But you're forgetting the fact that it's a hypervisor for the enterprise environment and these customers pay the subscription and don't have your requirements but completely different ones.
And from my perspective it would also be wrong to incorporate all the home network requirements into a tool like this in order to present them to enterprise customers who don't even need the gimmick and can't even find the relevant functions.

No provider with serious intentions would even think of putting consumer stuff in the data center, so the topic of P and E cores is off the table in this area.