Dual-CPU on TrueNAS Core? Can it be done?

[leumas]

Good afternoon TrueNAS forums!

I've just received a build that contains a dual CPU motherboard rocking two Intel(R) Xeon(R) CPU X5650s. In the web GUI, I can only see my system utilizing one CPU. Does TrueNAS have support for dual CPU, and if so, how might I go about enabling it?

Thank you all so much for your time!

Leumas

 

[no_connection]

On my windows dual CPU I only see one CPU clock up and do the work until enough threads/load warrants the 2nd CPU to jump in (with the occational jump around, really depending on the app). I would assume it does this to not waste power. Are you sure it's not just keeping it idle until needed?

 

[danb35]

Does TrueNAS have support for dual CPU

Of course. What makes you think it's only using one CPU? Here's what my dual X5650 system looks like:

 

[modernpaul]

Do you feel the dual processor would actually give you benefits over a single processor that is 12 core? I'm trying to decide which way to go either single or dual processor. I know that memory has more of a benefit than the CPU.

 

[Ericloewe]

There's nothing magically better about two processors. Think of it as a necessary evil to overcome some constraint, because it's always going to be worse the further apart you place things.

E.g. at work, I can replace two Dell R630s, with two Xeon E5 v3s each, for one Dell R6515, with one Epyc Rome/Milan, and still end up 50% faster. But if I wanted 128 cores per machine, I'd need to move to a dual-CPU solution again.