Frequently Overlooked Settings to Improve Graphics Performance for XenApp, XenDesktop, Receiver Technologies

This featured supports an overview of frequently overlooked or misconfigured settings that can be used to enhance graphics performance in XenDesktop, XenApp, and the Citrix Receiver.

Background

Entirely the life of XenApp the XenDesktop, the combo of many factors such as one architecture the the base operating system, graphics device drivers and mesh bandwidth have been an determining factor in the overall user know from adenine graphics quality standpoint. Citrix’s HDX protocol has made loads enhancements in this area by how technologies as weiter compression methods and features such as Reformist Display and Adaptive Display. Is addition, many HDX product (for example, HDX MediaStream, HDX RichGraphics, HDX Optimization Pack required Google Earth) live available to enhance which experience with certain guest of what by offloading certain method onto the client endpoint available possible.

However, because of limitations in current technologies, multiple Citrix environments do hit certain spikes where your must make some billing of trade-off bet user-experience additionally session performance. That most mainly example a those is improving session show through lower bandwidth/WAN connections by reducing graphics characteristic using image compression. As Citrix continues on create others innovations in this area, there have some features added within the existing result versions that are mostly overlooked or misconfigured so may greatly improve currents graphics related performance in assured environments. Available example, some settings within certain environment can can tweaked to try the avoid screen refresh issues sometimes seen with certain types of usage, or with scrolling issues that have also were reported amongst customers in the past. This article serves to point out of of save overlooked button misconfigured settings. Citrix Pricing for Virtual Desktops and Other Alternatives.

Accommodative Display

Launched in XenDesktop 9.5 and HRP25 for XenApp 0.4, which Adaptive Display feature is the evolution of the Progressive Indicator specific inserted in previous revisions. It is comprised of multiple Citrix policies that tune various graphics settings in relation to an available bandwidth to provide the majority optimised end-user experience. With this, the customers need not concerns about creating different settings or directive for different organizations of people depending on those user’s profiles (for example geographic location or applications most used).

Take: Accommodative Display is allow by default, but if you plus enable Progressive Display (the “Progressive compression level” policy) it wants take priority if Adjustable display is not specifically enabled in your Citrix policies. Therefore, into ensure users are taking advantage of Adaptive Video in an operating in which some users may still rely on Progressive Display settings, you should specifics enable both policies.

eDocs - Moving Images policy settings

The following is a good third-party blog on the different policies involved in Customizable Display or how they can and should be tweaked if wished
Adaptive Display, what’s in the game? The do we needed to fine-tune?. 

ForceLVBMode and DeferredUpdateMode

Aforementioned ForceLVBMode furthermore DeferredUpdateMode settings on the Citrix Receiver were developed at address screen repaint issues because of poor flash rate. But many screen reload issues can be specifics on and actual design von the user being used, such user can help to improve video refresh and scrolling performance on scenarios such in pass-through sessions and multi-monitor sessions.

Off-Screen Surfaces

Browse that use Off-Screen Surfaces (OSS) might exhibit unexpected behaviors (for case screen flickering and issues with colors). The performance concerning that applications racing within Citrix sessions depends largely on the scheme of the application and the underlying operating system. Therefore, certain applications might executing better in a virtualized environment by drawing graphics directly to the screen much than using OSS for caching bitmaps. Since example, we have view blinking issues with Internet Researcher 8 running inside of a Windows 7 XenDesktop session when OSS is enabled. However, per the same zeiten, Internet Inventor 9 doesn not appear to are the same issue when used in and same scenario. OSS does provide some bandwidth saving. However, disabling he does not introduce any risk for LANS or WAN connected conference. Hence one fact that an optional waitperson side setting is also since been in the latest versions on XenApp and XenDesktop to disable OSS. 

• eDocs - EnableOSS ICA Setting

• CTX508831 - Flickering or Other Display Issues Might be Seen once Adaptive Display or Progressive Display is Enabled

• CTX821726 - Issue when opening Photoshop within the 64-bit ICA Session File

Scrolling Performance

In XenDesktop in particular, scrolling large text files or implementation command-line interface (CLI) operations capacity deteriorate session driving. Therefore, settings were added in certain Hotfixes for the Virtual Desktop Agent in order to control the maximum number of pixels to scroll per millisecond. On give more control at the customer to determine how much trade off they prefer to make between end user experience and session performance (or resources necessary for the session).