Citrix XenDesktop 7.8 HDX Display performance improvements

This week Citrix released Citrix XenApp and XenDesktop 7.8 For a complete overview of all that is new in version 7.8 check out the following great articles:
Citrix XenDesktop 7.8 and Citrix XenApp 7.8 by Citrix CTP Thomas Poppelgard
Installation and Configuration of Citrix XenApp & XenDesktop 7.8 AppDisks and AppDNA by Citrix CTP Dane Young
Citrix XenApp 7.8 and XenDesktop 7.8 released by Alexander Ervik Johnsen

In this article I’ll focus on the enhancements that have been made to the Citrix HDX Display protocol stack. The what’s new guide for Citrix XenDesktop 7.8 states the following enhancements:

  • Framehawk server scalability improvements. Over 40% average reduction in memory footprint. Up to 20% increase in CPU efficiency.
  • Reduced VDA memory footprint in Thinwire. The graphics encoder processing pipeline now eliminates the use of an intermediate frame buffer when running Thinwire without video codec compression.

These statements are screaming to be independently measured and that’s what this article is all about.

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Citrix HDX 3D Pro and Nvidia Grid Browser experience

Over the last few weeks I’ve been working closely with Rachel Berry (Citrix) and Jason Southern (Nvidia) on some unexpected web browser behavior with web browsers on Nvidia grid enhanced VDI and RDS virtual machines running Citrix HDX 3D Pro. This work has resulted in a new support article from Citrix CTX202065.

In this article I’ll go a bit more in depth to explain our findings and hopefully help you to get better performance from web browsers but also give you some technical detail for situations where other applications may not perform as well as one would expect.

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