Cisco Cisco UCS C22 M3 Rack Server Weißbuch
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User Workload Simulation
– Login VSI
One of the most critical factors of validating a VMware Horizon View deployment is identifying a real-world user
workload that is easy for customers to replicate and standardized across platforms to allow customers to
realistically test the impact of a variety of worker tasks. To accurately represent a real-world user workload, a third-
party tool from Login VSI was used throughout the Hosted VDI testing.
The tool has the benefit of taking measurements of the in-session response time, providing an objective way to
measure the expected user experience for individual desktop throughout large scale testing, including login storms.
The Virtual Session Indexer (Login VSI 3.6) methodology, designed for benchmarking Server Based Computing
(SBC) and Virtual Desktop Infrastructure (VDI) environments is completely platform and protocol independent and
hence allows customers to easily replicate the testing results in their environment.
Note: In this testing, we utilized the tool to benchmark our VDI environment only.
Login VSI calculates an index based on the amount of simultaneous sessions that can be run on a single machine.
Login VSI simulates a medium workload user (also known as knowledge worker) running generic applications such
as: Microsoft Office 2007 or 2010, Internet Explorer 8 including a Flash video applet and Adobe Acrobat Reader
(Note: For the purposes of this test, applications were installed locally, not streamed nor hosted on Thin App).
Like real users, the scripted Login VSI session will leave multiple applications open at the same time. The medium
workload is the default workload in Login VSI and was used for this testing. This workload emulated a medium
knowledge working using Office, IE, printing and PDF viewing.
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Once a session has been started the medium workload will repeat every 12 minutes.
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During each loop the response time is measured every 2 minutes.
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The medium workload opens up to 5 apps simultaneously.
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The type rate is 160ms for each character.
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Approximately 2 minutes of idle time is included to simulate real-world users.
Each loop will open and use:
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Outlook 2007/2010, browse 10 messages.
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Internet Explorer, one instance is left open (BBC.co.uk), one instance is browsed to Wired.com,
Lonelyplanet.com and heavy
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480 p Flash application gettheglass.com
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Word 2007/2010, one instance to measure response time, one instance to review and edit document.
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BullZip PDF Printer & Acrobat Reader, the word document is printed and reviewed to PDF.
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Excel 2007/2010, a very large randomized sheet is opened.
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PowerPoint 2007/2010, a presentation is reviewed and edited.
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7-zip: using the command line version the output of the session is zipped.