English

Single server load test with Login VSI

Contributors netapp-dorianh Download PDF of this page

The NetApp Virtual Desktop Service uses the Microsoft Remote Desktop Protocol to access virtual desktop sessions and applications, and the Login VSI tool determines the maximum number of users that can be hosted on a specific server model. Login VSI simulates user login at specific intervals and performs user operations like opening documents, reading and composing mails, working with Excel and PowerPoint, printing documents, compressing files, and taking random breaks. It then measures response times. User response time is low when server utilization is low and increases when more user sessions are added. Login VSI determines the baseline based on initial user login sessions and it reports the maximum user session when the user response exceeds 2 seconds from the baseline.

The following table contains the hardware used for this validation.

Model Count Description

NetApp HCI H610C

4

Three in a cluster for launchers, AD, DHCP, and so on. One server for load testing.

NetApp HCI H615C

1

2x24C Intel Xeon Gold 6282 @2.1GHz. 1.5TB RAM.

The following table contains the software used for this validation.

product Description

NetApp VDS 5.4

Orchestration

VM Template Windows 2019 1809

Server OS for RDSH

Login VSI

4.1.32.1

VMware vSphere 6.7 Update 3

Hypervisor

VMware vCenter 6.7 Update 3f

VMware management tool

The Login VSI test results are as follows:

Model VM configuration Login VSI baseline Login VSI Max

H610C

8 vCPU, 48GB RAM, 75GB disk, 8Q vGPU profile

799

178

H615C

12 vCPU, 128GB RAM, 75GB disk

763

272

Considering sub-NUMA boundaries and hyperthreading, the eight VMs chosen for VM testing and configuration depended on the cores available on the host.

We used 10 launcher VMs on the H610C, which used the RDP protocol to connect to the user session. The following figure depicts the Login VSI connection information.

Error: Missing Graphic Image

The following figure displays the Login VSI response time versus the active sessions for the H610C.

Error: Missing Graphic Image

The following figure displays the Login VSI response time versus the active sessions for the H615C.

Error: Missing Graphic Image

The performance metrics from Cloud Insights during H615C Login VSI testing for vSphere host and VMs is shown in teh following figure.

Error: Missing Graphic Image