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vSphere High Performance Essentials by Christian Stankowic

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Latency-sensitive workloads

VMware vSphere offers various options to serve latency-sensitive workloads. In this section, we will focus on the various tweaking possibilities and two technologies to pass the hardware resources natively to VMs.

Latency-sensitive tweaking

VMware vSphere is preconfigured in a way to ensure high network throughput while having low CPU load, it is not primarily focused on low latency. For latency-sensitive workloads, this configuration might be unprofitable. To address this, it is possible to assign dedicated latency sensitivity to particular VMs. Once enabled, one physical CPU core is assigned to each vCPU core. As a result, latency is significantly reduced due to exclusive access. It is recommended to use this setting ...

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