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...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...Monday, December 21, 2009
One student at a time… Recently, I visited a company that develops and distributes software for Independent School District’s across USA. Their main product, originally developed for challenged kids, centers around dynamic computerized teaching and testing programs. This product proved to be so successful among this population that the company adapted it for other kids [...]
Continue reading...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...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. [...]
Continue reading...Wednesday, March 25, 2009
One of my favorite partners to work with is LoadTester. Not only are they competent and efficient, but they are nice and will tell you what they really think. Their latest update on HP’s latest release of LoadRunner 9.5 goes into a lot more detail than any readme file will, with perspective and colorful commentary [...]
Continue reading...Friday, March 6, 2009
Earlier this week, Shunra announced the release of a new product, VE Desktop for HP Software 5.0. This product is embedded into HP’s LoadRunner 9.5 and Performance Center 9.5 products and from the surface, looks a lot like a previous feature in LoadRunner called Mercury WAN Emulation (MWE). Because of the obvious similarities, there have [...]
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Wednesday, December 30, 2009
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