By Francesco Marchioni
Jam-packed with useful examples, this ebook seems at a distinct element of functionality tuning in every one bankruptcy and indicates the reader tips to practice them to their present Java purposes. Written to model 5.1, this booklet additionally has information regarding the approaching 6.0 unencumber and the way you could improve your present functions. This booklet is for Java architects who layout and configure company functions. it's nice for Java builders who are looking to get into the internal info of the applying server and of the proper tuning method. software testers also will locate this ebook precious as they'll the right way to computer screen the functionality of the middleware with the right kind tools.
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Extra info for JBoss AS 5 Performance Tuning
In order to install new plugins, from the main menu choose Tools | Plugins; the Plugins dialog is opened. Switch to the Available Plugins tab and select the plugin you want to install. There are quite a bit of available plugins: for the purpose of this book, you will need to install the Visual GC plugin, which can be used to collect and graphically display the garbage collector dynamics. [ 36 ] Chapter 2 Installing a new plugin can be done by means of the Tools | Plugins menu option. The following image resumes the suggested selection.
You might be tempted to add every kind of listener to improve your analysis: don't do it! JMeter will considerably slow down if you have many listeners active. Therefore, use a minimum set of the most appropriate listeners. Making your test plan a bit more realistic By default, JMeter sends one request immediately after the other: this could potentially saturate the server and also produce a test which is not close to real world cases. As a matter of fact user requests are usually separated by a variable amount of time, which can be thought as constant or following a statistical pattern like a gaussian curve.
Cgi. 4 or higher). bat (for Windows) or jmeter (for Unix) file. These files are found in the bin directory. Once the JMeter GUI has loaded, you'll notice two elements in the left pane: the Test Plan and WorkBench: The Test Plan is a container for running tests. The WorkBench functions as a temporary workspace to store test elements. When you are ready to test what you have designed in the WorkBench, you can copy or move the elements into the Test Plan. [ 43 ] Installing the Tools for Tuning Building a Test Plan The Test Plan is the main container where you will run your tests.