Load testing with Virtual and Real Browsers
Client-side metrics gathered during load testing can tell you how much the user experience degrades under increasing traffic conditions, but they will not tell you why. For that, you need server-side monitoring. Install this Server Monitoring™ agent on your Windows, Linux or AIX server to gather crucial performance metrics from servers during load testing. Load Tester PRO™ will automatically integrate this data into the load test report to give you the information you need to track down elusive performance problems.
Sure, monitoring can show you a bunch of numbers, but what values are good and bad? The checklist feature compares the values for the most important performance metrics and flags errors so you can take a closer look.
Statistics are displayed in the customizable GUI in real-time. Easy-to-read charts and analysis tables are integrated with all other results from that test.
Load Testing has a tendency to break things, like servers and networks, and this is where our server monitoring agent really shines. Run out of bandwidth? No problem - the agent will continue logging data locally until the test is over. Then Load Tester™ will automatically re-connect and collect the data it was unable to gather during the test - again seamlessly integrating it with the rest of the test results. The agent constantly writes the metrics to disk during the test, so even if the server crashes, every possible sample of data will be preserved and can be merged with the results when the server comes back online.
Server Monitoring™ will work through securely through firewalls with a small amount of configuration, or the server agents can run in off-line mode. The command-line interface allows you to manually start data collection before your test. When the test is complete, stop the data collection, copy the log files and import them into Load Tester™ for post-test analysis.