Book Image

Citrix XenApp 7.x Performance Essentials

By : Dentella
Book Image

Citrix XenApp 7.x Performance Essentials

By: Dentella

Overview of this book

If you are an IT architect or system administrator who works with Citrix® XenApp® and need an agile, practical guide to tune and optimize the performance of your XenApp® architecture, this is the book for you. Citrix®, Citrix Systems®, XenApp®, XenDesktop® and CloudPortal™ are trademarks of Citrix Systems, Inc. and/or one or more of its subsidiaries, and may be registered in the United States Patent and Trademark Office and in other countries.
Table of Contents (12 chapters)

Emulating links with WANem


If you're planning to publish applications on geographic links, it's very important to test how these applications perform. You'll learn later in this chapter how the optimizations work to improve the user experience.

Plan a complete User Acceptance Test (UAT) phase before going to production, if possible, with real users. In this section, you'll learn how to use an open source tool, WANem, to emulate a WAN link.

I usually prepare some test scenarios and ask users to give a score from 1 (bad) to 5 (good) for the user experience. The following table is an example of the feedback I got from a test session. It includes varying bandwidth (columns) and latency (rows), and is without any optimizations:

Time

100 KB/s

200 KB/s

300 KB/s

500 KB/s

10 ms

2

3

4

5

50 ms

2

2

3

4

150 ms

1

1

1

2

Installing

WANem is distributed as a bootable CD, based on Linux Knoppix. The operating system runs live from the CD, that is, you don't need to install it on the machine...