Friday 27 December 2013

How transaction response time is different from Hits Per Seconds in load runnner

Hits per Seconds is the number of hits made to the web server. These hits can be requests made to the web server for data or graphics. Hits per second measures the number of times the web server is being accessed. So, it does not represent well to users on how well their applications is performing.

Transaction Response Time helps us to find performance bottlenecks in the application. We can further drill down by correlation using other measurements such as the number of virtual users that is accessing the application at the time of measurement. Other system related metrics like CPU Utilization etc. can be used to identify the root cause.

In LoadRuner, after running a performance test, various measurements can be correlated to find trends and bottlenecks. Correlation can be done between the response time, the amount of load that was generated and the payload of all the components of the application.