Scope: Global – All Threads in Test Plan: Sharing Variables Using Properties: As expected, all the threads will now have their own copy of udv.counter = 1. during execution, if they are all reset to a different value, then they keep the modified value within the thread scope.I add a JSR223 sampler to modify the value – I multiply the thread number by 3 and store it in ‘udv.counter’.I create a User Defined Variable in my test as shown below.User Defined Variables – Multiple Threads:Ībove example explained creating variables at run time and their scope. So, whenever there is no match, the value is set to ‘NOT_SET’ or any given default value.Ībove execution result confirms that variables are local to a thread & they retain the value unless it is reset.In the Regular Expression Extractor, If I use a default value ‘ NOT_SET’ to reset the value everytime.During iteration 10, value is not reset.During iteration 9, another random string is generated which ends with ‘t’.But the value which was set in the 2nd iteration still is stored in the ‘regex.var’.
so the value is set to the random string generated for the iteration and printed. During 2nd iteration, random string ends with ‘t’.For the first iteration, random string does not end with t.I run the test for single user with 10 times.I print the value extracted (stored in regex.var) using JSR223 post processor.I add a Regular Expression Extractor to extract the value only if the Random String ends with the letter ‘t’.I add a dummy sampler which gives some random string for every iteration as shown here.Lets see a simple test how variables work with iterations. Creating Variables at Run Time – Multiple Iterations:īy default, a variable created for a thread retains its value throughout the test (even with multiple iterations) until it is reset. Only for the first user, the values is shown as 10 and for the remaining users – it is null!Ībove execution result confirms that variables are local to a thread. I run the test with 5 users and check the log.I add a condition that I need to create a variable only for the first thread (also knows as first user).I add a JSR223 Sampler.Ĭtx.getThreadNum() - returns the current thread number. I create a simple JMeter test in which I have only Thread Group.Any change in the value does not get reflected in other threads/groups. It can not be accessed by other threads in the same thread group / other thread groups in the Test plan. Scope: Local to Thread: Creating Variables at Run Time – Multiple Threads:īy default, creating any new variables are local to a thread. spawn(threadsCount, initalDelay, startupTime, holdLoadFor, shutdownTime) - spawns specified threads number and configures start time, ramp-up time, flight time and shutdown timeĭuration values (initialDelay, startupTime, holdLoadFor, shutdownTime) may be specified with shorthand, case-insensitive modifiers:ĭuration setting may be combined like 1d11h23m6s.In this article, We will see how we could define variables in JMeter in such a way that they can be accessed by.Schedule is specified with a list of spawn directives: Property can be specified either in user.properties file (jmeter.properties also applicable), orįrom command line like -J "threadsschedule=."_. There is a way to configure thread group from special jmeter property threadsschedule_. Look how predictable our active threads graph is: Let's configure Ultimate Thread Group as following:Īnd then try to run test.
and, of course, trustworthy load preview graph.separate ramp-up time, shutdown time, flight time for each shedule record.The features that everyone needed in JMeter and they finally available: "Ultimate" means there will be no need in further Thread Group plugins. Available in Standard Set Ultimate Thread Group since 0.2.1
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