Virtualization has emerged as one of the leading technologies in today’s market; enabling businesses to more effectively scale operations to meet demand while significantly reducing costs at the same time. Everyone seems to understand what virtualization is, but it’s actually rather difficult to define because the term is used interchangeably to describe a plethora of [...]
Continue reading...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...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...Thursday, August 20, 2009
Examples of latency sensitive applications In the previous post http://www.shunra.com/shunrablog/index.php/2009/08/14/data-center-relocation-questions-and-answers-part-1/ I shared some of the questions that clients typically ask me during the performance analysis service in a data center relocation project. One of the most popular question, especially at the beginning of the project is “which applications are the most sensitive to network latency?”. [...]
Continue reading...Friday, August 14, 2009
In my line of work, I get to assist many clients with analyzing the impact of an upcoming data center relocation on the performance of business applications. Many clients don’t know exactly what application performance to expect post the data center move. The main concern is that once all the applications start to operate across [...]
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...Wednesday, March 11, 2009
One of the highlights of my work at Shunra is being able to teach at the Shunra University. I get to work with a handful of great IT professionals as we drill down into the best practices and challenges of making applications perform well across networks. As much as I love teaching, the biggest value [...]
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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Friday, March 12, 2010
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