(This article is part of the JMeter Series)
As tests get larger, or as steps need to be repeated you’ll want to structure your tests into distinct entities - these seem to be called “Modules” in JMeter.
However, there is no “Module” element JMeter. As a “Module” you can however use the “Simple Controller”. It allows you to drop other elements into it and to name them as a whole. I don’t know whether it has additional features such as providing scoping of any kind.
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(This article is part of the JMeter Series)
Purpose of JMeter JMeter is a testing tool. It comes accross as a graphical tool, where you can half visually half through text define your test. Its roots seem to lie in web testing - that means testing a website on how long it takes to return pages, how well it does under stress, how well it scales with increasing numbers of parallel requests etc.
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(This article is part of the JMeter Series)
Upon starting JMeter you’ll see two branches: “Test Plan” and “WorkBench”.
“Test Plan” is the place where your tests will live.
What the purpose of “WorkBench” is, is not really clear. It seems to be meant to be a place to do your throw-away experimentation.
The really crucial “trap” of the “WorkBench” is however, that JMeter will throw away whatever you put into the “WorkBench” upon exit.
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(This article is part of the JMeter Series)
While testing a Rails application there was a situation where a background worker (DJB or background task) would get an order to execute and eventually the completed order would appear on a page.
Thus we needed to wait for the page to be updated and continue the test after.
User Defined Variables I’m predefining used variables here - see “We set up our variables” in the Extracting text from a page and using it somewhere else in JMeter article for an exaplanation why.
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(This article is part of the JMeter Series)
JMeter’s “HTTP Request Sampler” will read the whole input (the downloaded page, pdf, movie etc.) into its main memory. That means that working with larger (f.ex. movies) files will bring JMeter, the JVM and/or many machines to their memory limits.
If you do not not need to do more than making sure that something gets downloaded, then you can “offload” the download work to an outside process, f.
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