Summary
The optimization of the logon process can greatly improve the user experience. With EdgeSight and Windows Performance Toolkit you can perform a deep analysis and detect any causes of delay. If you can't use those tools, you are still able to implement some guidelines and best practices that will surely make users' logon faster.
Setting up a session is a time-consuming task. With XenApp 6.5, Citrix implemented some new features to improve session management. With session pre-launch and session lingering you can maximize the reuse of existing sessions when users request an application, speeding up its launch time.