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POLoad Testing Java Web Application - find TPS / Avg transaction response time
 

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    <p>I would like to build my own load testing tool in Java with the goal of being able to load test a web application I am building throughout the development cycle. The web application will be receiving server to server HTTP Post requests and I would like to find its starting transaction per second (TPS) capacity along with the avgerage response time.</p> <p>The Post request and response messages will be in XML (I dont' think that's really applicable though :) ).</p> <p>I have written a very simple Java app to send transactions and count how many transactions it was able to send in one second (1000 ms) however I don't think this is the best way to load test. Really what I want is to send any number of transactions at exactly the same time - i.e. 10, 50, 100 etc.</p> <p>Any help would be appreciated!</p> <p>Oh and here is my current test app code:</p> <pre><code> Thread[] t = new Thread[1]; for (int a = 0; a &lt; t.length; a++) { t[a] = new Thread(new MessageLoop()); } startTime = System.currentTimeMillis(); System.out.println(startTime); for (int a = 0; a &lt; t.length; a++) { t[a].start(); } while ((System.currentTimeMillis() - startTime) &lt; 1000 ) { } if ((System.currentTimeMillis() - startTime) &gt; 1000 ) { for (int a = 0; a &lt; t.length; a++) { t[a].interrupt(); } } long endTime = System.currentTimeMillis(); System.out.println(endTime); System.out.println("Total time: " + (endTime - startTime)); System.out.println("Total transactions: " + count); private static class MessageLoop implements Runnable { public void run() { try { //Test Number of transactions while ((System.currentTimeMillis() - startTime) &lt; 1000 ) { // SEND TRANSACTION HERE count++; } } catch (Exception e) { } } } </code></pre>
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    1. COWhat is your question exactly? Also, have you considered using an existing tool? Some options are here: http://www.opensourcetesting.org/performance.php. Proper stress testing is a non-trivial task in my opinion.
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    2. COThank you for your comment. Exact Question: What is the best method of sending multiple http post transactions at the same time? Ref an existing tool: ultimately I want to provide some reporting back to users with various information such as the average response time in the last hour etc, so I foresee that the tool will require alot of customisation in future, so I think building my own is the best option.
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    3. COAlso, thanks for the pointer to opensourcetesting.org/performance.php, I'm trying some stuff with Apache JMeter.
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