how can define number of vcpu

[baber]

Dear all

Hi

how can understand number of vcpu that i have assign to a vm are more than request for example if i assign more vcpus to a vm more than expected that performance will be decrease how can understand had to decrease the vcpus ?

BR

Babak

[Wolken]

Hello!

I believe the articles below could help you:

Setting the number of cores per CPU in a virtual machine (1010184) - VMware Knowledge Base

Virtual Machine Sizing: 3 Mistakes To Avoid -  https://www.networkcomputing.com/cloud-infrastructure/virtual-machine-sizing-3-mistakes-avoid/885581...

[HassanAlKak88]

Hello,

I recommend to check the following: How to decide VMware vCPU to physical CPU ratio

Please consider marking this answer "CORRECT" or "Helpful" if you think your question have been answered correctly.

Cheers,

VCIX6-NV|VCP-NV|VCP-DC|

@KakHassan

linkedin.com/in/hassanalkak

[Shard201110141]

You could run a 60 day trial of vRealize Operation (Advanced)

This will give you a tone of data around optimizing allocation vs demand.

https://my.vmware.com/en/group/vmware/evalcenter?p=vrops-eval

Planning the Capacity Using vRealize Operations Manager 6.6 - YouTube

[baber]

Is that necessary use application monitoring for determine that or i can use vCenter monitoring in a period time ?

actually i want to know can we say one of the reason for low performance on my vm is assign more vcpu than needed

BR

Babak

[rchaubey]

you can check below blog -

Maximizing VMware Performance and CPU Utilization

[daphnissov]

No, vCenter performance charts alone cannot determine this. You would either need to scrutinize esxtop output for a long period of time or use a tool like vROps.

[baber]

About esxtop can i say if it show %CSTP more than normal means i have cpu overcommitment and had to delight vcpu ?

BR

[daphnissov]

No, it's more complicated than that. Get a proper monitoring tool.

[baber]

So thanks

would you please say me what parameter or object will be show in VROPS that help me to realize i have assigned vcpus more than needed ?

BR

Babak

[daphnissov]

vROps can show a metric called "is oversized" as well as views, reports, and dashboards that show contributing metrics to that designation.