Tag Archive | "Packet Loss"
Testing 3G Hand Held Inventory Devices using Shunra Virtual Enterprise (VE) Suite
I was approached a couple of days ago by one of our large customers, a major food manufacturer, to help them design a testing cycle for an hand-held device, to scan barcodes on their product’s pallets, as they are being unloaded from supply trucks into their regional depots. The devices utilize a LAN based wireless [...]
Continue reading...WAN symptoms within Cloud type Data Centers – Why would we test something like this?
Monday, January 25, 2010
WAN symptoms in question are latency, packet loss, disconnects, bit errors, etc. usually exist on Wide Area Networks and as a result cause applications performance degradation. But our WAN’s essentially are LAN’s connected with each other and those connections impose geographical distance between those LANs, thus creating “WAN behavior”. Inside individual LANs those issues happen [...]
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...Building Applications for a Remote Datacenter Part 1. The network impact
Tuesday, October 13, 2009
This series of posts is about the day after a data center move. Now that the data center is remote, how does this paradigm shift impact the way we should develop, test, deploy, monitor and troubleshoot applications. I will try to cover as many topics as possible, but the main focus is still going to be around the role application performance management plays in this new paradigm.
Continue reading...Cloud computing adoption rises so what should you do about it?
Friday, September 11, 2009
I have been meaning to address the impact that cloud computing has on performance engineering but haven’t had the time to rigorously tackle this issue. After all, there are serious implications both for vendors that deliver applications and services from the Cloud as well as enterprises that are rapidly migrating more and more services to [...]
Continue reading...Packet Loss – a glossary post
Thursday, June 25, 2009
Packet Loss: The term “packet loss” is used to describe the probability of dropping a packet at any point across the network link. The key reasons for packet loss across a network are: When networks get congested over a long period of time the router buffers get saturated which at some point leads to a situation [...]
Continue reading...What’s new in LoadRunner 9.5 – the rest of the story
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...Adding Network Analysis to a LoadRunner 9.5 Scenario
Tuesday, March 10, 2009
In a previous post I explained how to add network conditions to a LoadRunner scenario, answering the question, “How will this application perform in a remote site?” The results from running a LoadRunner test with network conditions will highlight transactions that perform well under network conditions as well as pinpoint transactions that will degrade in [...]
Continue reading...VE Desktop for HP Software 5.0 versus LoadRunner MWE
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 [...]
Continue reading...Adding Network Conditions to a QTP Script – Part 1
Monday, March 2, 2009
Quick Test Pro (QTP) is a very useful functional testing tool and now as a result of the Shunra-HP partnership, QTP can integrate with Shunra VE Desktop Professional to automate the testing and analysis of applications under network conditions. In the following series of posts I will walk you through the process of extending QTP scripts [...]
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Monday, February 8, 2010
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