Solved

VMWare, Changing vCPU's

Posted on 2012-03-12
4
366 Views
Last Modified: 2012-08-13
In VMWare v5, I have the following set on my VM->Edit Settings->CPUs

Number of virtual sockets:     1

Number of cores per socket:  1

Total number of cores:            1

Open in new window


I have a machine with 16 cores.

How can I allocate this to my VM (or do I have to leave one core for the VM)
0
Comment
Question by:Los Angeles1
4 Comments
 
LVL 118

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE)
Andrew Hancock (VMware vExpert / EE MVE) earned 125 total points
ID: 37710364
normally you would use 1 vCPU (in the VM) to one of your Cores.

How many processors (CPUs) do you want to allocate to the VM.

if only 1, just allocate 1.
0
 
LVL 8

Assisted Solution

by:Elmar-H
Elmar-H earned 125 total points
ID: 37710366
shutdown vm and add more cores. but you will need to modify the HAL if you have only 1 core installed bevore.
0
 
LVL 14

Assisted Solution

by:RickEpnet
RickEpnet earned 125 total points
ID: 37710370
Best to give one CPU and one Core if that is not enough you can start to increase by 1 core or you could add a CPU.
0
 
LVL 40

Accepted Solution

by:
coolsport00 earned 125 total points
ID: 37710625
UNLESS the app or OS *requires* more vCPU by it's system requirements, you typically only need to configure 1 vCPU for a VM as noted by the others above. If you allocate more CPU than the OS/app needs, you can run into performance degregation on the VM. See this CPU Scheduler whitepaper for more info:
http://www.vmware.com/files/pdf/techpaper/VMW_vSphere41_cpu_schedule_ESX.pdf

~coolsport00
0

Featured Post

Get up to 2TB FREE CLOUD per backup license!

An exclusive Black Friday offer just for Expert Exchange audience! Buy any of our top-rated backup solutions & get up to 2TB free cloud per system! Perform local & cloud backup in the same step, and restore instantly—anytime, anywhere. Grab this deal now before it disappears!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

As with any other System Center product, the installation for the Authoring Tool can be quite a pain sometimes. This article serves to help you avoid making these mistakes and hopefully save you a ton of time on troubleshooting :)  Step 1: Make sur…
Veeam Backup & Replication has added a new integration – Veeam Backup for Microsoft Office 365.  In this blog, we will discuss how you can benefit from Office 365 email backup with the Veeam’s new product and try to shed some light on the needs and …
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…
The viewer will learn how to use a discrete random variable to simulate the return on an investment over a period of years, create a Monte Carlo simulation using the discrete random variable, and create a graph to represent the possible returns over…

948 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now