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Often when performance testing in a black box environment, you are left with the onerous responsibility to report against response time performance. A typical approach by performance testers is to rely on 95th percentiles, which is effectively a Service Level Agreement (SLA) saying that 95 percent of all my samples have a response time below 5 [...] When/if I am asked to conduct interviews again for potential performance test analysts, I think I will include this question in my repertoire to suss out those in the know, and those just, um, pretending … Here is a great analogy of throughput and latency. I don’t pretend to understand queuing theory (just yet), but am [...] A new version of FireWatir has been released. This includes some fixes related to Firefox 3 but more importantly, it marks the merger of FireWatir and Watir projects, allowing for tighter coupling of methods and functionality between the two, allowing you to write less code =) To use FireWatir, you will have to install a Firefox [...] In an effort to get more actively involved with the open source community, I’ve recently starting working with another colleague on a new site called justaddwatir.com. This is an exciting collaboration of examples for web application testing in ruby (watir – pronounced “water”). Watir is a simple open-source library for automating web browsers. It allows you [...] This is most likely because the JMeter recording proxy does not support the https protocol. If it’s a screen you can live without, you can just stop/start the proxy recorder around that page (I use the Firefox plugin called FoxyProxy to quickly switch between different proxy configurations). However, if it is vital to your script (for [...] Just a quick post for myself so I don’t forget… I needed to generate a random alpha for use in a LoadRunner web vuser script. The native LoadRunner parameters can do random numerics and date/times but I couldn’t find a way to generate only characters, as one might need to generate a random password for [...] |
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