Paper: Project Virtual Reality Check Phase IV

Posted by Kenneth van Surksum   |   Thursday, June 16th, 2011   |  

Sven Huisman, technical consultant at PQR, Jeroen van de Kamp, Enterprise Architect and CTO at Login Consultants and Ruben Spruijt, Technology Officer at PQR just announced a new paper titled: Project VRC: Phase IV. The paper which contains 38 pages gives some valuable insight on the impact of using Application Virtualization in a Virtual Desktop Infrastructure (VDI) environment.

The three biggest and most commonly used application virtualization solutions in the VDI market space are investigated: Citrix Application Streaming, Microsoft App-V and VMware ThinApp. To measure the performance impact of these solutions on VDI, Login Virtual Session Indexer (VSI) was used.

Several scenario’s were tested on Desktop VMs, running on top of VMware vSphere 4.1 and using VMware View 4.5 to deploy the VMs. On top of that several scenario’s were tested:

  • App-V Scenarios:
    • App-V with preloaded cache
    • App-V with preloaded cache and client in offline mode
    • App-V using HTTP streaming
    • App-V using RTSP streaming
    • App-V using RTSP streaming and compressed packages
    • App-V using RTSP streaming and a shared read-only cache
  • ThinApp Scenarios:
    • ThinApp 4.5 with packaged applications on the local drive of the golden image
    • ThinApp 4.5 with packaged applications on a network share
    • ThinApp 4.6 with packaged applications on the local drive of the golden image
    • ThinApp 4.6 with packaged applications on a network share
    • ThinApp 4.6 with compression set to fast and optimization set to disk
  • Application Streaming Scenarios:
    • Application Streaming 6 running the applications precached without XenApp servers using raderun.exe
    • Application Streaming 6 running the applications non-precached with a cachesize of 1 GB
    • Application Streaming 6 running the applications non-precached with a cachesize of 5 GB


Based on these scenario’s both the impact on the maximum number of users that can be hosted on a VDI host, the impact on application responsiveness and the impact on IO were measured.

Some of the conclusions:

Test results show that Application Virtualization has impact on the VDI user density, which can be decreased by 20% to 45% when Office 2007 is completely virtualized. This should be considered as a worst case scenario. When only a couple of specific (business) applications is virtualized, the session density decreases by only 3 to 12%.


The storage impact on read and write IO was also investigated and the general conclusion is that streaming applications will decrease the read IOs by 20% to 44% and increase the write IOs by 20% to 44%. From a management point of view, choosing for demand application streaming as the delivery method brings considerable management benefits and will offload read I/O’s. However, the impact on write I/O’s should not be neglected.

In order to download the benchmark you will have to register at the Virtual Reality Check website.

blog comments powered by Disqus Newest articles
Release: VMware vRealize Log Insight 4.5

June 13th, 2017

Log Insight is a log aggregation, management and analysis tool, that VMware first introduced in 2013 and considered a competitor of Splunk.
Yesterday VMware announced the release of version 4.5, available for…

Release: VMware vRealize Automation 7.3

June 6th, 2017

Today VMware announced the latest release of its cloud management platform vRealize Automation, former vCloud Automation Center.
VMware vRealize Automation 7.3 release notes can be found at this link.


Paper: Introducing the NSX-T Platform

February 9th, 2017

“We see greater potential strategic opportunity in NSX over the next decade than our franchise product vSphere has had for the past decade.”
said VMware’s CEO Pat Gelsinger talking about…

Paper: VMware vSphere Virtual Machine Encryption Performance

November 22nd, 2016

Encryption of virtual machines is something that has been requested for years by the security community. VMware continued to postpone its implementation due to the negative operational impact that many…

Quest Software leaves Dell

November 1st, 2016

In September 2012 Dell announced to have completed the acquisition of Quest Software, a Californian company with an history in systems management, security, business intelligence and, falling back in our…

Citrix announces Q3 2016 results

October 21st, 2016

Citrix announced its financial results for third quarter 2016.
The revenues for the second quarter were $841 million for an increase of 3% compared to Q3 2015.
Net income was $132…

Release: VMware vSphere 6.5 & Virtual SAN 6.5

October 19th, 2016

2016 edition of VMworld US has been quite turbulent, on the other hand during VMworld Europe, happening these days in Barcelona, the company announced a few more products for the…

Release: VMware vRealize Log Insight 4.0

October 18th, 2016

Log Insight is a log aggregation, management and analisys tool, that VMware first introduced in 2013 and now is usually compared with Splunk.
Yesterday VMware announced Log Insight’s new major…

Release: Windows Server 2016 with support for Window Server & Hyper-V containers

October 13th, 2016

Yesterday Microsoft announced the general availability of Windows Server 2016 which the company defines as a cloud-ready OS.
Beside fancy definitions, one of the most relevant perks of this release…

Release: Oracle VM 3.4.2

September 22nd, 2016

During Oracle OpenWorld 2016 the company released version 3.4.2 of its enterprise virtualization solution.
Oracle VM is available for both x86 and SPARC based processor architectures and uses the Xen hypervisor…

VMworld US 2016 Wrap-up

September 1st, 2016

Today was the last day of VMware’s flagship conference VMworld in Las Vegas, an highly controversial edition which left a good chunk of the audience disoriented if not properly disappointed….

Gartner releases its Magic Quadrant for Cloud Infrastructure as a Service for 2016

August 11th, 2016

Last week Gartner updated its Magic Quadrant for Cloud Infrastructure as a Service (IaaS) for the year 2016. The Magic Quadrant for the year 2015 was released in May last year…

Release: Ansible Tower 3 by Red Hat

August 2nd, 2016

Ansible is one of the four main players in the automation market, younger then the well known Chef and Puppet, has been launched in 2013 in Durham, N.C. and acquired…

IBM announces earnings for Q2 2016

July 19th, 2016

Yesterday IBM announced its results for Q2 2016.

If we compare with the same quarter in 2015 earnings per share, from continuing operations, decreased 22%. Net income, from continuing operations,…

Monthly Archive