Virtualization clarification (Full Version)

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anilkumar_sanjeev -> Virtualization clarification (31.Jul.2011 1:39:57 AM)

Would like to start a discussion to whats important for virtualiztion, should it be the number of cores on CPU or the CPU speed.
what CPU Presently in market is best suited for a test environment
AMD Phenom 6 core or a intel i5 quadcore

Scott Lowe -> RE: Virtualization clarification (31.Jul.2011 2:18:04 PM)

As far as processing itself goes, I believe that core count matters more than individual core speed. More cores equates to more VM density from a pure ratio perspective. We've been using 6 core Intel processors in our new vSphere hosts at work and they've worked extremely well (5600 series processors).


Scott Lowe -> RE: Virtualization clarification (18.Nov.2011 6:15:28 PM)

Were you able to get answers to the question that you had regarding cores vs. CPU speed?


mountainman -> RE: Virtualization clarification (9.Dec.2011 8:22:56 AM)

What I know is, it depends on more than just CPU speed and number of cores. But number of cores does not scale up exactly proportionally with performance. am i right Scott?

atc -> RE: Virtualization clarification (9.Dec.2011 1:24:35 PM)

To me virtualization is about sharing of resource and how we can automate the process.

Beside the processing power, access to storage and availability of the server is also important.

I think for CPU speed and # of cores, it will depend on what is running on the virtualized server.

mountainman -> RE: Virtualization clarification (20.Dec.2011 9:09:50 AM)

As server workloads vary, virtualization provides the ability for virtual machines that are over utilizing the resources of a server to be moved to underutilized servers. 

Scott Lowe -> RE: Virtualization clarification (29.Dec.2011 10:39:37 PM)

Absolutely! Workload means much more than pretty much anything when it comes to comfiguring a virtual machine. You don't want to under spec a virtual machine, but you don't want to waste resources, either. That said, CPU performance is generally the last resource to be fully consumed in a virtual environment - RAM and disk will get eaten up first.


mountainman -> RE: Virtualization clarification (9.Feb.2012 8:02:26 AM)


RAM and disk will get eaten up first.

Yes Scott, i will agree with you.

Scott Lowe -> RE: Virtualization clarification (12.Feb.2012 6:07:46 PM)

In a traditional server virtualization scenario, RAM will generally be the first resource to be exhausted. However, in VDI, keep a sharp eye on storage system performance as this is the first metric that is likely to get out of line because of the way that users interact with desktop PCs.


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