Book Image

Citrix XenApp Performance Essentials

By : Luca Dentella
Book Image

Citrix XenApp Performance Essentials

By: Luca Dentella

Overview of this book

Citrix XenApp is an application virtualization product that allows users to connect to their corporate applications from any device. XenApp can host applications on central servers and allows users to interact with them remotely or stream and deliver them to user devices for local execution. Citrix XenApp Performance Essentials is a practical guide that provides you guidelines, best practices, and real world examples that will help you to improve the performance of your farm, identifying and solving possible bottlenecks and using advanced features including the new features provided by XenApp 6.5. Citrix XenApp is widely used to deliver enterprise applications to end users. This book covers the whole process of optimizing a XenApp farm, starting from the design phase all the way to tuning for remote users and connecting via geographic links. With your farm in production, you will understand what to monitor and how to optimize your farm, as well as how to use an open-source tool, WANem, to test the applications' behavior with different link conditions. You will also learn which settings and features XenApp offers to optimize CPU and memory utilization. This book will help you to prevent or solve performance problems and make your users happy working with published applications.
Table of Contents (12 chapters)

Optimizing Windows GUI


Changing the default Windows behavior may improve the user experience when the entire desktop or a single application is delivered by XenApp.

Windows settings

Some optimizations are configured on Windows side.

Menu show delay

Windows normally delays menus before they are displayed. You can reduce the delay by changing the following registry key:

HKCU\Control Panel\Desktop\MenuShowDelay

The default value on Windows 2008 is 400. You can set it from 0 to 4000 milliseconds.

Internet Explorer offscreen composition

If websites contain animated content, sometimes the content may flicker if viewed with Internet Explorer running over a Terminal Services session.

You can force IE to render the content offscreen by creating the following registry key:

HKCU\Software\Microsoft\Internet Explorer\Main\Force Offscreen Composition=00000001 (dword)

Note

With IE9, Microsoft removed the Force Offscreen Composition setting, so adding the preceding key will affect only IE8 or earlier versions.

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