The VDI Solutions team performed the testing and validation outlined in this section using Login Enterprise Task worker on a PowerEdge R860 with a PowerStore 9200T hosting VDI Desktop. The team tested 330 Task Worker VMs across compute host. The team also used the Citrix MCS linked-clone provisioning method to provision pooled-random desktop VMs and used Citrix Thinwire+ as the remote display protocol.
CPU usage
The following graphs show the CPU utilization across the three hosts used during testing. The CPU usage with all VMs powered on was approximately 6.5 percent before testing started.
During the steady state phase, an average CPU utilization of 84.7 percent was recorded. This value is below the pass/fail threshold that the team set for average CPU utilization (see Table 8). To maintain good EUE, do not exceed this threshold. You can load more user sessions while exceeding this threshold for CPU, but you might experience a degradation in user experience.
As shown in the following figure, the CPU readiness was well below the 5 percent threshold that the team set.
As shown in the following figure, the average steady state CPU core utilization across the compute host was 64.6 percent:
Memory
The team observed no memory constraints during the testing on the compute hosts. Out of 4096 GB of available memory per node, the compute host reached a maximum consumed memory of 1366 GB and a steady state average of 1364 GB. Active memory usage reached a maximum active memory of 703 GB and recorded a steady state average memory of 510 GB. There was no memory ballooning or swapping on the hosts.
Cluster IOPS
Cluster IOPS reached a maximum value of 42732 for Total IOPS during the Steady state phase. The average steady average IOPS were 40440.
Network usage
Network bandwidth was not an issue during testing. The network usage recorded a steady state average of 5377 Mbps. The busiest period for network traffic was during Logon Phase when a peak value of 6481 Mbps was recorded.
Disk I/O latency
Cluster disk latency reached a maximum latency of 0.32 milliseconds during the Recreate phase. The average steady state latency was 0.16 milliseconds.
User experience
The Login Enterprise EUX score was 8.3/10 and the VSImax shows >330, which means that VSImax was not reached during this test, and that it would be possible to run more sessions with this configuration.