load-testing

I am conducting some research on emerging web technologies and have created a very simple Azure website which makes use of web sockets and mongo db as the database. I have managed to get all the components working together and now must perform load testing on the application. The main criteria is the maximum user load that the app can support, at the moment there is 1 web role instance, so probably I would need to test the max user load for that instance, then try with 2 instances and so on. I found some solutions online such as Loadstorm, however I cannot afford to pay to use these services

I'm a .net developer having no prior experience in JMeter/Stress testing. I'm trying to load test the ASP.net website that I had developed using JMeter. The reason for using JMeter is that its an open source tool having lots of fame and credibility. I referred to this link in order to take care of viewstate which is a typical feature of ASP.net. However my requirements are not that simple as stated there. I'm trying to load test my site by sending userid and password to log-in page and then test through other pages which are allowed to be browsed only if log-in is successful. The steps that I

Context We wish to use "replay" web server access logs to generate load tests. JMeter had come to mind as I'd recently read blog posts about using jmeter in the cloud (e.g. firing up a number of Amazon EC2 instances to generate the load) For years I had heard of JMeter's ability to replay access logs, but in reviewing this feature I found the following. Access Log Sampler DOES: recreate sessions, i.e. handle the jsessionId token (thought it tries to approximate sessions by IP address); DOES NOT: handle POST data (even if you could configure apache/tomcat to write out post data to the access

There seems to be a lot of stress/load testing tool that support AJAX. I am wondering how well does these tool implemented. Do they only record http request and replay it? Is it the right way to test AJAX app? How does google test their ajax apps? If you are worried about functionality only, something like Watin , Watir , Selenium or any functional tool for that matter would work. As long as you put sufficient timing in your functional tests to allow for ajax callbacks then that should do the trick. To add to my response, If you are talking about unit testing your javascript you could use

We are using JMeter in a heterogeneous environment and we would like to measure CPU and memory while we are producing heavy load on a server where our service or web application is running. What would you recommend to use? Is there any software solution (open source or commercial) available which records CPU and memory usage in a file or to a database? Thank you! zengr From the java perspective, you can use jconsole or write your own code to monitor the memory usage. Measure CPU and memory consumption of a Java application javasysmon on github dstat for linux and perfmon for windows. Read more

We’ve come across this question fairly often at Load Impact, so I thought I’d add it to the Stack Overflow community to make it easier to find. How do I calculate the number of concurrent users (VUs) that I need to simulate during a load test, in order to stress my system with the same kind of traffic that it will normally see in the course of a month, week or day? Running a load test requires that you specify how many concurrent users should be simulated during testing. In other words, how many simulated users will be active, loading things or interacting with your site/app at the same time.