We require an open source tool for performance testing on we application, can any one please suggest the open source tool.
JMeter
Apache JMeter may be used to test performance both on static and dynamic resources (Files, Web dynamic languages - PHP, Java, ASP.NET, etc. -, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.
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I need some input from loadrunner/jmeter experts.
I'm having automation scripts which is written in selenium+ java .
Can i use same scripts to do performance testing using loadrunner/jemeter.?
why i want do like this : to maintain single code base. if any changes happen so i will able to correct at one place and use it for UI Automation and performance testing.
Any help appreciate.
Selenium automates browsers that it!
Jmeter is specifically to use for Performance test. to be more specific either stress testing or load testing.
JMeter and Selenium can be used together for load testing of a website. Selenium is used to perform load testing and JMeter is used to measure the performance of the same. One can measure how fast HTML pages take to load, and also check javascript and CSS performances. This is done using a combination of the graphical JMeter interface and some scripting to invoke Selenium code.
Please read more about it here
JMeter and Selenium are both used for web application testing. But the main difference is that JMeter is mostly used to test the performance of web applications under load and stress. On the other hand, Selenium is best suited for automation and cross browser testing of a website. Based on what type of testing is necessary for the project, one can choose JMeter or Selenium or integrate both if that serves their purpose.
Theoretically yes, it is possible, but it is not recommended even by Selenium developers, be informed of the following additional constraints:
Browsers are quite resource intensive, for example Firefox 94 needs 1 CPU core and 2 GB of RAM per instance so you can calculate how much RAM you will need to simulate, say, 100 users.
You won't get metrics and KPIs normally available as the result of a performance test run
I have a system that is due to undergo load testing. Liaising with the load testing team has been difficult and less than helpful, but to cut a long story short they claim the load testing tool they will use cannot mock/simulate the functionality of the external dependencies of the system (a web service and a database). As a result I am questioning their choice of tool.
In more detail, the system I have created receives a http request, after some processing it makes a call to a third party database (which we do not have control of) to retrieve more data, this then undergoes further processing, and finally a call is made to a client (which client is dependent on the data input).
So all-in-all we need to know how the server handles the load during the two processing stages, and the timing of the calls to the database and the final client.
My question is essentially this, can this be done with a load runner tool?
If so which tools can do this?
The load testers plan to use NeoLoad, and claim it is not possible, is this true?
We do load and resilience tests similar to you described with help of Gatling load tool. This is very flexible tool based on scala language and allows to build different load scenarious. However it's required coding skills form the performance engineers.
I have to test my rest API such that 100k API calls are made simultaneously(within 500ms).Any Idea how to simulate it?Utility to use?
I would suggest to use JMeter too, it enable your test to create multiple concurrent jmeter server. Just to be clear you can control multiple remote JMeter engines from a single JMeter client and replicate a test across many computers and thus simulate a larger load on the target server.
To be honest, your target is quite high (100k API calls simultaneously within 500ms), i.e. you'll need a lot of jmeter servers. When you create stress tests, there are not magical recipes, guides or manuals. Trial and error is a fundamental method of solving this kind of problems.
In my experience, I first try with few concurrent users and see how the server react. Then increase the number of concurrent users till to reach an intolerable performance decrease or, worst, a bottleneck .
http://jmeter.apache.org/usermanual/remote-test.html
You will obviously need a load testing tool which can be run in a distributed mode, i.e. 1 controller and X load generators executing the same test.
Grinder - scripts are written in some Python dialect
Apache JMeter - this guy doesn't require any specific knowledge, you can create tests using simple GUI
Tsung - is written in Erlang, known for capability to produce high loads even on low-end hardware.
See Open Source Load Testing Tools: Which One Should You Use? article for more information on above tools.
JMeter
The Apache JMeter™ application is open source software, a 100% pure
Java application designed to load test functional behavior and measure
performance. It was originally designed for testing Web Applications
but has since expanded to other test functions.
I have started learning JMeter. One question arise in my mind that what kind of sites we can test using Jmeter.
Apache JMeter may be used to test performance both on static and dynamic resources (Webservices (SOAP/REST), Web dynamic languages - PHP, Java, ASP.NET, Files, etc. -, Java Objects, Data Bases and Queries, FTP Servers and more)
what is the best tool (open or commercial) currently available, that lets me send customized requests to a web server and get back a response to check the performance?
i will be sending it a load of more than 20K per second, but i need to get numbers for each call made. also, the numbers might be in some microseconds or nanoseconds. How in this small measurement unit, can i work out a baseline and a benchmark?
If you're using Apache, Apache AB is a benchmarking to test how many requests your serve can serve per second and how well it handles load and concurrency. It's an open-source project - check it out here.
In addition, wikipedia has a nice list of benchmarking software for testing servers.
You can use the Web Application Stress Tool of Microsoft
The Microsoft WAS web stress tool is designed to realistically simulate multiple browsers requesting pages from a web site. You can use this tool to gather performance and stability information about your web application. This tool simulates a large number of requests with a relatively small number of client machines. The goal is to create an environment that is as close to production as possible so that you can find and eliminate problems in the web application prior to deployment.
You can find a list of Open Source software for performance (most of them are for web that send custom request to webserver).
Don't know if either of these have granularity better than milliseconds but check out JMeter (open source) and LoadRunner (Commercial). LoadRunner is not cheap but it allows you to span load generation across multiple machines with aggregated results.