Tag Archive | "Shunra"
WAN Emulation vs WAN Simulation
One of the topics we are frequently asked is to explain or clarify the difference between WAN Emulation and WAN Simulation. WAN Simulation methodology is a set of theoretical algorithms which are usually applied on a trace file. These algorithms aim to predict applications response times with different conditions and then applied to the captured [...]
Continue reading...Why Has MPLS Become So Pervasive on Today’s Global Networks?
Monday, December 28, 2009
Many of the largest networks today employ Multi-Protocol Label Switching (MPLS) for a myriad of reasons. So what are some of the key motivators that would entice an organization to make the leap to MPLS? Protocol neutrality, extensibility, adaptability and scalability are among some of the many reasons. Additionally, because MPLS was designed to openly [...]
Continue reading...Discussion & Buzz at the I/ITSEC Show Earlier this Month
Monday, December 28, 2009
I recently had the pleasure of attending the ITSEC Modeling and Simulation show in Orlando, Florida. This event featured the latest solutions in Gaming and Remote Learning for Dept of Defense clients deployed around the world. Based upon conversations with both the vendors and potential users of these products it quickly became evident that a [...]
Continue reading...Is IPTV coming to your home sooner than expected?
Tuesday, December 22, 2009
In today’s Business section of the New York Times, there is an article by Brian Stelter (December 22, 2009) about a proposal by Apple computer to offer TV subscription packages via the Internet. The article points out that ABC and CBS are actively considering joining the Apple venture. Disney, who owns ABC, was the first [...]
Continue reading...Applications, Applications, Applications
Monday, December 21, 2009
I have been asked by a colleague “Why would someone use Application Virtualization?” You may already know that adopting the likes of Application Virtualization is not an easy task. Many applications are simply not built to be deployed in such an environment. Not to mention all the other challenges faced within the IT organization. One [...]
Continue reading...Cloud Computing to the Desktop
Wednesday, December 9, 2009
VMware is releasing a new technology, developed by Teradici that may greatly improve the performance of remote desktops, quintessence filling a gap in the Cloud Computing paradigm. It will allow the use of PCoverIP protocol instead of using slower methods like RDP. PCoIP is a type of display protocol used by remote desktops when doing [...]
Continue reading...Location-aware deployment testing
Friday, November 6, 2009
As a corollary to last week’s blog about hosted load testing, I thought it would be interesting to explain a little about using a cloud-based test environment to perform pre-deployment testing for a cloud-based application. That sounds like a lot of clouds! What we are simply trying to understand is where and how to deploy [...]
Continue reading...Building Applications for a Remote Datacenter Part 2 Application Efficiency Metrics
Thursday, November 5, 2009
In the previous post we identified the Wide Area Network and the impairments that it introduces as a key reason for why a local user (let’s say in NYC) experiences a faster application than a user that is remote to his datacenter (let’s say in Tokyo). I also presented a question to the group: “We [...]
Continue reading...Hosted Load Testing II
Friday, October 30, 2009
My friend Mark Tomlinson from HP recently wrote an informative blog about “Understanding the language of hosted load testing.” The blog touched on two competing approaches to application performance testing that were referenced as “behind the firewall” and “outside the firewall”. Behind the firewall testing usually means testing in a lab environment such as a [...]
Continue reading...Analyzing and remediating latency sensitive applications part 2 Oracle Clinical
Thursday, September 17, 2009
In the previous post http://www.shunra.com/shunrablog/index.php/2009/08/14/data-center-relocation-questions-and-answers-part-1/ I presented an example of a common performance problem with applications that host executables on a remote shared drive. As common as that problem is, it is usually a legacy problem, most new applications follow a more best practices architecture usually involving a web based front end for the application. [...]
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Wednesday, December 30, 2009
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