CPU allocation to the guest machine on HyperV3.0

I have activated HyperV3.0 on windows 2012 server. I made a virtual machine, operating system is windows 2008 R2 SP1. Users connect via remote desktop and use applications. While on the guest server the CPU usage is 60%-80%  host CPU usage does not exceed 5%. There are 2 CPUs, total of 8 core CPUs. Virtual machine sometimes experiences slow downs due to CPU usage. Right now I am using 4 VCPUs. How can I allocate more CPU to the guest machine? Does it have anything to do with NUMA settings?

Thank you for your time.
LucaneAsked:
Who is Participating?

Improve company productivity with a Business Account.Sign Up

x
 
Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
I would recommend, you scale out your servers, and reduce the vCPUs to 2.
0
 
Haresh NikumbhSr. Tech leadCommented:
1 vCPU does not equal 1 core - there is no one to one relationship (at all) with any hypervisor (not with Hyper-V, nor XenServer, nor ESX)
Let’s do the Hyper-V math...  The capacity planning guideline is 8 vCPU per CPU Core.
One CPU (dual core) = 2 Cores     x8 = 16 virtual CPUs.
16 vCPUs / 4 vCPU per VM = 4 VMs
16 vCPUs / 2 vCPU per VM = 8 VMs
16 vCPUs / 1 vCPU pre VM = 16 VMs


http://social.technet.microsoft.com/wiki/contents/articles/1234.hyper-v-concepts-vcpu.aspx
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.