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)

GPO and logon script issues


In a Windows environment, it's common to apply settings and customizations via Group Policy Objects (GPOs) or using logon scripts.

Numerous GPOs and long-running scripts can significantly impact the speed of the logon process. It's sometimes hard to find which GPOs or scripts are causing delays. A suggestion is to move the XenApp server or a test user account in a new Organizational Unit, with no policies applied and blocked inheritance. Comparing the logon time in this scenario with the normal logon time can help you understand how GPOs and scripts affect the logon process.

The following are some of the best practices when working with GPOs and logon scripts:

  • Reduce the number of GPOs by merging them when possible. The time Windows takes to apply 10 GPOs is much more than the time to apply a single GPO including all their settings.

  • Disable unused GPOs sections. It's common to have GPOs with only computer or user settings. Explicitly disabling the unused sections...