JMeter can simulate a very High Load provided you use it right. Don’t listen to Urban Legends that say JMeter cannot handle high load. Now as for answer, it depends on: your machine power your jvm 32 bits or 64 bits your jvm allocated memory -Xmx your test plan ( lot of beanshell, post processor, … Read more
Jmeter does not have a flag to do this automatically. Generally, you have to clear the results with CTRL+E (in windows) or from the file menu, under RUN > CLEAR or RUN > CLEAR ALL You might be able to write a beanshell script to clear the results everytime you execute the script. http://www.javadocexamples.com/java_examples/org/apache/jmeter/samplers/SampleListener/
I can give you a suggestion from my recent experience. You can connect webkit based Phantom virtual clients to your chat server and measure the resource usage (i.e CPU, memory, may be using a shell script or another utility or you can profile your service ) var system = require(‘system’); var page = require(‘webpage’).create(); page.viewportSize … Read more
Simply list of related links you can possibly find useful: Native graphs: JMeter Report Dashboard Real-time plotting with 3rd party real-time series database like influxdb Free open source solutions for automated graphs: JMeter Plugins – look onto custom graphs in this package; some of them provide better results reporting out-of-box than JMeter’s original ones; JMeter … Read more
Chrome now has a headless mode: op = webdriver.ChromeOptions() op.add_argument(‘headless’) driver = webdriver.Chrome(options=op)
Postman has a Collection Runner which can be used for making API calls with multiple iterations. You might be able to use it for load testing if you can figure out how to get it to run requests in parallel.
Concerning consecutive execution of thread groups in test plan: simple check Run Test Group consecutively check-box on the Test Plan configuration screen: Use e.g. Loop Controller for this: Thread Group Number of Threads = 1 Loop Count = 1 … Loop Controller Loop Count = N HTTP Request … or even schema without Loop Controller … Read more
You could use ConstantThroughputTimer. Quote from JMeter help files below: 18.6.4 Constant Throughput Timer This timer introduces variable pauses, calculated to keep the total throughput (in terms of samples per minute) as close as possible to a give figure. Of course the throughput will be lower if the server is not capable of handling it, … Read more
Wikipedia on load testing (bold is mine): […]A load test is usually conducted to understand the behaviour of the system under a specific expected load. This load can be the expected concurrent number of users on the application performing a specific number of transactions within the set duration. This test will give out the response … Read more