Welcome to The Performance Engineer. Imagine a situation wherein you come to office after enjoying a long weekend. You are about to relax in your chair and you get a call from your client saying that the website you created for them has become ultra slow and caused them a loss of some million dollars! Don’t you think you should have taken a proactive step to avoid this situation before delivering your application?
Here you will find tips, tricks, code snippets etc on how to Code.Test.Tune.Optimize performance of your application. Monitoring system’s performance, tips to tune your system and applications so that it satisfies the criteria of high availability, reliability at all times. Performance engineering tips for windows operating system, Linux and Sun Solaris as well. So stay tuned.
The Performance Engineer 
can any one tell how thinktime must be calculated and on what basis
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Think time is the time which imitates the human to navigate from one page to another. For example, user may click on a button and wait for the page to load. After that the user may not perform other actions immediately. He waits and searches for desired string or field, after finding it he will perform an action of clicking or filling something. The time taken/spent on user side is called think time. It will vary from user to user.
In load testing, the main aim is to determine how much load the SUT can handle. So it is not recommended to use the real think time in the scripts as it may cause the requests to be spaced out and thereby giving more than enough breathing time for the servers. In turn, in a way defeating the purpose of load testing.
In short, keep think time minimal.
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