The VDI Solutions team used the Login Enterprise test suite to simulate the user experience for several profile types under the typical workload for that type.
The following table summarizes the test results that the team obtained for the compute hosts using the various workloads and configurations:
| Server configuration | Login VSI workload | User density per host | Remote display protocol | Average CPU usage | Average memory consumed | Average active memory | Average IOPS per user | Average net Mbps per user |
| Density Optimized | Task Worker | 245 | Thinwire | 84.9% | 1049 GB | 382 GB | 14.9 | 5.88 |
The table headings are defined as follows:
- User density—The number of users per compute host that successfully completed the workload test within the acceptable resource limits for the host. For clusters, this number reflects the average of the density achieved for all compute hosts in the cluster.
- Average CPU—The average CPU usage over the steady state period. For clusters, this number represents the combined average CPU usage of all compute hosts. On the latest AMD processors, the ESXi host CPU metrics exceed the rated 100 percent for the host if Turbo Boost is enabled, which is the default setting. 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.
- 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. 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 IOPS per user—IOPS calculated from the average cluster disk IOPS over the steady-state period divided by the number of users.
- Average network usage per user—Average network usage on all hosts calculated over the steady-state period divided by the number of users.