Home 
Products
CitraTest VU
CitraTest VU F.A.Q.
|
|
CitraTest VU F.A.Q.
|
|
|
What terminal server based environments does CitraTest VU support?
|
All of them: Citrix XenServer, Citrix Presentation Server, Citrix MetaFrame,
Citrix NFuse, Microsoft Terminal Services, etc.
CitraTest VU scripts look at images on the screen, not underlying protocol, so
all client types are supported: Citrix ICA, Citrix NFuse web client, Microsoft
Terminal Services, RDP, etc.
|
|
|
What are the system requirements for the CitraTest VU Load Machine? |
|
A Windows 2000 Server or Windows Server 2003 machine. As a benchmark, a dual
CPU machine with 2GB memory will generate 100-150 CitraTest VU scripts. |
|
|
How many users can CitraTest VU replicate during a load test?
|
|
There is no limit to the number of users that CitraTest VU can replicate during
a load test. It is just a simple process of adding additional load generating
servers to increase the overall load to the required number of users. We have
customers that run as little as 50 virtual user load simulations up to well
over 3000 virtual user load simulations.
|
|
| How many
CitraTest VU Load Machines will I need? |
Typically 1-3 CitraTest VU Load Machines are deployed but there are no
limitations to the ultimate number. Any amount of Virtual Users can be
replicated via CitraTest VU, depending on what size subset of the server farm
you want to benchmark.
For example, if you use 2 CitraTest VU Load Machines to test 3
servers-under-test, and client side End-to-End response times become
unacceptable when approaching 300 virtual users, your servers will support
approximately 100 concurrent users each. |
|
|
You can plan the number of servers you need based on the results of a CitraTest
VU Load Modeling Scenario.
|
|
|
Is CitraTest VU image searching logic “position dependent”? |
|
No, it is dynamic and user configurable. As a global setting, CitraTest VU
scripts limit screen searching to a buffer area around each image’s
original location, which reduces resource consumption on the Load Machine and
increases the number of VU scripts you can run. You can globally increase the
buffer area, or within individual script functions you can choose to
“search” the entire screen for the image. This would be the case
when some aspects of your application, such as desktop icons, are not always
displayed at the same location each time the VU script plays back. |
|
| What is the
CitraTest VU Measurement Machine? |
This machine is a stand-alone workstation, separate from the Load Machine.
CitraTest VU scripts run on this machine and gather accurate (tenth of a
second) End-to-End response metrics from the real user perspective while the
Load Machine generates stress on the server(s)-under-test. |
|
| Where do I see
the Measurement Machine response time results? |
|
The CitraTest VU Measurement script records the timer results over the duration
of the load test scenario. Response time results are stored in a results
database, which is installed with CitraTest VU in Access, Oracle, MS SQL, and
MySQL formats. Predefined Crystal Reports are also installed with CitraTest VU.
These allow you to view Summary and Detail results of all the response timers
from the Measurement Machine. |
|
|
Can I observe server-under-test metrics while the VU Load Model Scenario plays
back? |
|
Yes. The Tevron Controller displays real-time processor and memory metrics from
the server-under-test. Also, the Measurement Machine CitraTest VU scripts can
benchmark server-under-test metrics during playback, from within the script
logic. |
|
| How is CitraTest
VU licensed? |
| The base licensing model includes: |
|
| (a) |
CitraTest VU script development
license |
| (b) |
CitraTest VU license for X number of
Virtual Users |
| (c) |
Tevron Controller license |
| (d) |
CitraTest VU Measuring License |
|
|
