ESXi 5.5 CPU response behavior

[WickedEvolved]

Hey Guys,

i heard a myth that the ESX can make a quadcore 3GHz work like a singlecore 12GHz. maybe its cause its shown like 12GHz power, but i dont think it works that way.

Can anyone confirm or bust the myth? in my opinion its still working like a normal quadcore but the resource usage is a bit better shared between the cores.

thx for your help

best regards

Dennis from Germany

[Alim786]

Hi Dennis

I think it is how you relate it to configuring a VM. The article below may help you :-

http://www.virtualizationsoftware.com/virtual-cores-virtual-sockets-vcpu-explained/‌

[WickedEvolved]

thanks for your quick answer. its very helpful to know this, but in the end i try it with a new server tomorrow and see how much performance i can get out of it by trying all the diffrent options. it will be a dell r300 with a quadcore and ill will post all my results here for you.

🙂

have a nice day

Dennis

[wila]

Hi,

No, it doesn't make a 3GHz quad core CPU into a single core 12GHz core.

I think I have an idea where that myth originates from.

If you look at a host in the vSphere web client it lists the available resources on your CPU in GHz, but this is just a convenient way of representation.

If you want to call it anything then it is marketing.

Just like the host in the above screenshot does not have 1x 7.89TB datastore, the CPU is just a sum of all cores and not a 9.33 GHz CPU.

What you could do is to install VMs and have them see a single core.

As this works using CPU scheduling, you are not limited to 4 single core VMs either.

PS: A single core 12GHz processor doesn't even exist.

--

Wil