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Optimizing Citrix® XenDesktop® for High Performance by Craig Thomas Ellrod

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VMware vCPU tweaks

The following tweaks help you tune performance with regards to CPUs in VMware.

Power management

Any form of power management adds latency to a VM. Adjust the BIOS setting for power management to static high so that no OS-controlled power management can engage on the virtual machines. There is a trade off between running cool and lean, so this setting is up to you.

Power settings differ between server manufacturers but you will want to disable power management for C-States, C1E Support, and QPI Power. You will want to enable Turbo Mode or Turbo Boost. You will want to set any power management modes to maximum performance.

NUMA in VMware

NUMA is cache memory for the CPU. NUMA architectures add latency and slow performance. ESXi uses ...

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