Average IOPS per user-IOPS calculated from the average cluster disk IOPS over the steady state period divided by the number of users.

For clusters, this is the average amount of physical guest memory that is actively used across all compute hosts over the steady state period.

Average active memory-For ESXi hosts, the amount of memory that is actively used, as estimated by the VMKernel based on recently touched memory pages.

An additional 35 percent of CPU is available from the Turbo Boost feature, but this additional CPU headroom is not reflected in the VMware vSphere metrics where the performance data is gathered. On the latest Intel processors, the ESXi host CPU metrics exceed the rated 100 percent for the host if Turbo Boost is enabled, which is the default setting. For clusters, this number represents the combined average CPU usage of all compute hosts.

Average CPU-The average CPU usage over the steady-state phase.

For clusters, this number reflects the average of the density achieved for all compute hosts in the cluster.

User density-The number of users per compute host that successfully completed the workload test within the acceptable resource limits for the host.

The host utilization metrics mentioned in the table are defined as follows:

For additional information, see VMware Configuration Maximums. A limit of 200 VMs per vSAN-enabled host should be used in a production environment. Note: VM densities in excess of 200 were used for benchmarking purposes only.

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