I need to check performance issues in a VMware vSphere 5.5 infrastructure based on 4 ESXi 5.5 hosts.
Some specialists say that VMware suggests as a general rule to avoid using more that 4 virtual cores for each physical core.
Is such 4:1 relationship true?
Is it documented anywhere?
Regards
marius
It's a general guideline, but like everything else, your results may vary. Some workloads perform just fine at a 4:1 subscription ratio while others do not.
In this context, below article is a good read -
How to decide VMware vCPU to physical CPU ratio
Please consider marking this answer as "correct" or "helpful" if you think your questions have been answered.
Cheers,
Supreet
Many thanks for the very interesting pointer.
Is there any "official" VMware document about the same subject?
Regards
marius
Yes, read the performance guide for the vSphere documentation.