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Dell DVS Simplified Appliance Reference Architecture
7.2
Testing
7.2.1
Testing Methodology
The testing undertaken by the Dell DVS Engineering team was intended to provide a set
of results that were as closely aligned with a production environment as possible within a
lab based environment. In addition multiple runs for each workload were completed to
allow the team to understand and record any performance differences within the
environment.
Login VSI has two modes for launching user‖s sessions;
●
Parallel
o
Sessions are launched from multiple launcher hosts in a round robin
fashion; this mode is recommended by Login Consultants when running
tests against multiple host servers. In parallel mode the VSI console is
configured to launch a number of sessions over a specified time period
(specified in seconds)
●
Sequential
o
Sessions are launched from each launcher host in sequence, sessions are
only started from a second host once all sessions have been launched on
the first host, this is repeated for each launcher host. Sequential launching
is recommended by Login Consultants when testing a single desktop host
server. The VSI console is configure to launch a specified number of
session at a specified interval specified in seconds
All test runs were conducted using the Login VSI “Parallel Launch” mode, all sessions were
launched over an hour to try and represent the typical 9am logon storm. Once the last
user session has connected, the sessions are left to run for 15 minutes prior to the
sessions being instructed to logout at the end of the current task sequence, this allows
every user to complete a minimum of two task sequences within the run before logging
out. The single server test runs were configured to launch user sessions every 60 seconds,
as with the full bundle test runs sessions were left to run for 15 minutes after the last user
connected prior to the sessions being instructed to log out.
7.2.2
User Workloads
As defined in the Solution Architecture section of this document the solution has been
tested against the Standard workload. Details of the vCPU and memory configuration for
each of these workloads are defined within the Workload Characterization section. The
tasks undertaken by the users in the Standard workload are outlined below;
7.2.3
Standard Workload
●
This workload emulates a medium knowledge working using Office, IE and PDF.
Once a session has been started the medium workload will repeat every 12
minutes. During each loop the response time is measured every 2 minutes. The
medium workload opens up to 5 apps simultaneously. The type rate is 160 ms for
each character. 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, browse 10 messages.
