HI all:
We just recently purchased DL 380 G6 with the new nehelm CPU. We decided to enable hyperthreading. So we have 2 physical socket CPU with Quadcore, once the hyperthreading is enabled, the Logical processor is 16. Does that mean if we are using the 200% commiment rule, I have 16 CPUS to work with?
For example, if I have 8 CPUs, I can commite 16 CPUs to 8 VMs with 2 vCPU each. Now if I have 16, I can commit 32 CPUs to 16 vms with 2 vCPU each. Is that correct?
We are running vSphere and the VMs are Citrix Terminal servers.
Thanks in advance.
I have 16 CPUS to work with?
NO. Physical cores. 2 Sockets with 4 CORE is 8 processors, not 16. So you have 8 1 vCPU VM's per core consolidation ratio.
And if I were you, I would turn hyperthreading OFF! It doesn't really buy you anything, the left over IO isn't enough to substantiate a VM, you will just end up with lop sided VM's in performance.
Thanks for the info. We just heard conflcting reports, some says hyperthreading will help, some says no. Thanks.
And if I were you, I would turn hyperthreading OFF! It doesn't really buy you anything, the left over IO isn't enough to substantiate a VM, you will just end up with lop sided VM's in performance.
Can you give some more details on that, please?
AWo
VCP / VMware vEXPERT 2009
And if I were you, I would turn hyperthreading OFF! It doesn't really buy you anything, the left over IO isn't enough to substantiate a VM, you will just end up with lop sided VM's in performance
Yes, it would be nice of you if you could explain this to us in detail!
Thanks a lot!