Performance tuning
Performance tuning for virtual machines and ESXi hosts is complicated due to virtual machines sharing the underlying primary four physical resources: storage, networks, CPU, and memory. Overcommitment of resources can cause performance bottlenecks. Not only should physical hardware resources be considered, but software settings also need to be optimized. The virtual machine monitor (VMM), virtual machine settings, resource controls, and application configurations can also affect performance.
Traditional performance practices
Always use common sense in any design to achieve good performance. Some traditional practices include the following:
Know the physical resource (primary four) requirements for each virtual machine's applications and guest operating systems, so the virtual machine is correctly configured and capable of providing the resources the applications will demand.
Configure the virtual machines with the correct virtual hardware for the guest operating system.
When...
