Sorted by: 1. Within each Thread Group, we may place a combination of one or more of other elements − Sampler, Logic Controller, Configuration Element, Listener, and Timer. The next action to take after an in-thread sampler fails: Continue: Continue to perform subsequent operations. If you want a standard pause (think time) between pages, you can use the "add think times to children". I'm scraping the token with JSON extractor, and parcing it using the BeanShell post-processor, by the following command:Navigate to JMeter_Home and execute the JMeter, which is saved as a . According to JMeter Best Practices you should always be using the latest version of JMeter so consider upgrading on the version you will find at JMeter Downloads page on. For variable delays, set the pause time to zero, and add a Timer as a child. These scripts are tested at regular intervals but if you encounter an issue with one of them, please report it to support@octoperf. JMeter has become an industry-standard tool for conducting functional, load, performance, and regression tests on web applications. The options are in: Use JMeter Properties to pass the values from file or command-line arguments when you start the test. In Linux or Unix, execute the JMeter. You can configure JMeter to "gather" all threads and tell them to wait for the specified amount of time together by adding a Flow Control Action sampler and a Synchronizing Timer with number of users to group by equal to the number of threads in your thread group But despite trying several different configs, Flow Control Action never runs. Add Flow Control Action sampler to the end of the “LoginAPI” thread group and configure it to “sleep” for i. Also you have options to continue execution, but move to next iteration using. Rather than generate a sample, the test element either pauses or stops the selected target. 0. 3 Microsoft Windows 10 Enterprise 64-bit java version "14. jmeter set up. Created attachment TranContrAndBreak. Here's the order the script is written:. Copy the file you're going to upload to JMeter's "bin" folder. or switch to setUp Thread Group which is being executed before all "main" Thread Groups. You can control the number of users simulated (number of threads), the ramp up time (how long it takes to start all the threads), the number of times to perform the test, and optionally, a start and stop time for the test Sampler: tells JMeter to send requests to a server and wait for a response. As of JMeter 5. Request for Token. How set a variable as a parameter value in JMeter. dd HH:mm:ss", yourDate) vars. Use that token in Subsequent API as Bearer Token in. A complete list of samplers are given here : Flow Control Action. 0 was released this week! Since the last release in February 2018, this new version has many major and impactful changes to both improving user experience and bug fixes. The Counter Variable is used to generate numeric counters. 0 While Controller exposes current iteration via __jm__While Controller__idx pre-defined variableThe idea of bypassing dynamic parameters is building your Test Plan as follows: Request 1 (open login page) Extract dynamic parameters and store them into JMeter Variables. JMX is an open test format that allows the test plan to be run in a text editor. 7. 0. In general you should not be passing values between. UBIK LOAD PACK UBIK LOAD PACK. I will executed only once for every controller. ASF Bugzilla – Bug 62244 Rename Test Action to Flow Control Action Last modified: 2018-04-01 20:00:33 UTCIsha presents an highly interactive and instructor led live “Performance Testing Using Apache Jmeter ” Training by our industry expert with hands-on experience. parse("yyyy. Set the number of iterations in the configuration. Password . 162k 5 5 gold badges 85 85 silver badges 134 134 bronze badges. Stack Overflow | The World’s Largest Online Community for DevelopersTo apply a timer to a single sampler, add the timer as a child element of the sampler. 1. Reducing number of threads currently can be implemented in 2 ways: Putting thread to "sleep" without actually stopping it, can be achieved using Flow Control Action Sampler. Create a test plan. I can think of 2 possible reasons which might cause premature ending of your test: CSV Data Set Config is configured to stop thread on EOF, make sure it's set up like at the image below: Flow Control Action sampler is configured to stop either thread or test Jmeter 5. Constant Timer) as a child of the 2nd request. JMeter Scenario I am using the Stepping thread group with the while controller Jmeter script For pacing, I am using flow control action and a. Stack Overflow | The World’s Largest Online Community for Developers26. 0 and 60008. ctx. Password . The Course Overview. Add a Synchronizing Timer as a child of the Test Action sampler and set Number of Simultaneous Users to Group by to 30. The easiest solution would be creating a separate Thread Group with 1 virtual user and 1 HTTP Request sampler which will be refreshing the token. you need to amend your test plan configuration to include Synchronizing Timer with Number of Simultaneous Users to Group by set to 500 and replace the Constant Timer with the Flow Control Action sampler. Go to the Preferences menu. To take the screenshot ( G raphics) of the JMeter screen. 13+8-Ubuntu-0ubuntu1. 1. 1" 2020-04-14. You can put Flow Control Action sampler under the If Controller and use the following __groovy () function as the condition: $ {__groovy (vars. Sorted by: 42. To pause (sleep) current or all thread for specified amount of time (duration is set in milliseconds). Here you will see the process to perform JMeter Performance Testing in 5 steps: 1. Subscribe to Our Channel : Flow Control Action sampler is used to modify the execution flow of JMeter by performing specific actions. To apply a timer after a sampler, either add it to the next sampler, or add it as the child of a Test Action Sampler. In one thread group Flow Control is used to repeatedly call API after every 10 minutes, in another thread group it is used to exit the jmeter test. This will add the recording capability to JMeter. JMeter automatically treats HTTP Request samplers with status codes above 400 as failed so you don't have to go for scripting, you can stop the test using If Controller using the following condition: ${__jexl3("${JMeterThread. Follow answered Jan 13, 2019 at 7:48. Put your requests under the Loop Controller. In one thread group Flow Control is used to repeatedly call API after every 10 minutes, in another thread group it is used to exit the jmeter test. 11 hours and 30 minutes using Flow Control Action sampler; Pass the token to the main Thread Group which is doing the endurance test by saving it into a JMeter Property in first Thread Group and reading it using __P() function in second Thread Group 0. Apache JMeter doesn't natively pace based on the number of tests per user. 2. 99. My Requirement is to execute 10 request per second for 5 minutes. 11 hours and 30 minutes using Flow Control Action sampler; Pass the token to the main Thread Group which is doing the endurance test by saving it into a JMeter Property in first Thread Group and reading it using __P() function in second Thread Group0. Like:A timer which is not in the same scope as a sampler will not be processed at all. . This means that it will run the Login request once per hour. 34k 5 5. Add JSR223 Sampler and put the following code into Script area:If your question is about suspending/resuming any application, not specifically JMeter, in Linux you can use kill -STOP $ {JMETER_PID} for suspend the process and kill -CONT $ {JMETER_PID} for resume. Flow Control Action (was: Test Action ) ¶ The Flow Control Action sampler is a sampler that is intended for use in a conditional controller. I have this setup in Jmeter but the summary report does not report the time it takes for the while loop to finish, seems to just report the HTTP Request time only. If we take a Test Plan that manages the loop count using the Thread Group. "Go to next iteration of Current Loop" seems suitable. Improve this answer. Other (and the main factor) is your application response time because JMeter. send another 500 requests. or add a Flow Control Action sampler between "Validate" and "Cancel" requests and configure it to "Pause" for 3000 milliseconds: Both options will create a 3 seconds delay between "Validate" and "Cancel" requests. You can pass the token from that Thread Group to "main" thread group via __setProperty () function or using Inter-Thread Communication Plugin. Let’s assume that we have a basic script with two request samplers: the first request sampler is located one step before the. JMeter timers obey JMeter scoping rules so if you want the Constant Timer to be applied to one specific sampler only - you need to make it a child of the sampler. 4 - Flow Control Action Sampler. Use Regular expression extractor & JMeter functions to handle those dynamic parameters Run the script with 1 user and see if it works If it works successfully then you can move on to running the same scenario with more usersThis Groovy script checks for a response code of 200 and for the text “Welcome to the Simple Travel Agency!” on the page. 1. Get the token in one Thread Group which performs the authantication and set a delay for i. Share. Flow Control Action sampler is used along with the logical controllers to control the sampler execution. Put all your "transactions" into Test Fragments and use Module Controllers for referencing these fragments, this way you can build arbitrary flow, see Easily Write a GOTO Statement in JMeter article for more details. Now let’s discuss some commonly used samplers provided by Apache JMeter. : CTRL + G. The controls for a thread group allow you to Set the number of threads for each group. In a JMeter test plan, I have 4 thread groups which will be executed consecutively, however there is a dependency of certain variables from one thread group to another and hence, in case of any sampler failure in previous thread group, the execution of subsequent thread groups should stop. You will create five users that send requests to two pages on the JMeter Web site. 0. More information: Using JMeter Variables With Multiple Thread Groups. JMeter supports a variety of samplers, such as HTTP Request, JDBC Request, FTP Request, and more. Duration and Size Assertions. log file. This proposal describes possible design of adding flow control to Taurus by adding "logic blocks" to scenario. You can try out GitHub actions with a free. So, the total number of requests is (5 users) x (2 requests) x (repeat 2 times) = 20 HTTP requests. A Test Plan comprises of at least one Thread Group. Improve this answer. You code should be: // this returns the currents threads timestamp value from the csv long ts = vars ["timestamp"]. Add an IF controller after the request, within the while controller, check the success of the request. so if you want to create a delay between HTTP Request 1 and HTTP Request 2 you need to put the timer as a child of the HTTP Request 2. Add a Flow Control Action and add in it a JSR223PreProcessor with this code. Follow answered Dec 21, 2020 at 7:36. Click on Add-> Non Test Elements-> HTTP (S) Test Script Recorder (HTTP Proxy server in older JMeter versions). getIteration () == 1,)}, this way it will be executed only during first. 3. Now the system generates the entire test plan. This article talks about JMeter, how to set it up and use it. A flow control action is an action that: Does not need a contact or a participant to succeed. first thread group for API A has Contniue selected and 1 thread and ramp up is 1 and loop count Infinite is selected and Same user on each iteration is selected. One of those is the lack of a decent analysis, results and reporting engine - which I guess is why a lot of companies use Blazemeter as their testing component. A Constant Throughput Timer element sets the Target Throughput property to your desired rate of samples per minute. Start Next Thread. In order to achieve your goal, you can place your timer in 2 ways. Consider replacing the Constant Timer with the Flow Control Action sampler, it doesn't generate any SampleResult and being called exactly where it's placed just like. Flow Control. Add a JSR223 Sampler just before the While Controller and store the current time into a JMeter Variable using the following code: SampleResult. Also in JMeter 5 you can use Flow Control Action which replaced Test Action and choose Break Current Loop if your CSV inside a loop. This could be an old bug in JMeter < 2. 1" 2020-04-14 Note: There might be more issues for flow control action when Break current loop is used, so if you have time please investigate. Use the following __jexl3 () function as the condition: $ {__jexl3 (!$ {JMeterThread. To open a new test plan (It may prompt to save the current unsaved test plan) CTRL + M. You can give only the filename and JMeter will look for the CSV file and write results file into JMeter's "bin" folder (or the place where you launched JMeter from). version, etc. 当然，我们还有另外一种解决办法，就是单独把学生登录放到一个threadgroup，这样就会有三个. wait 1 second. Rather than generate a sample, the test element either pauses or stops the selected target. Nhập thời gian bạn muốn: Action này sẽ “Pause” lại trong khoảng từ 600 ms -> 1000 ms. 56. How does JMeter handle token expiration? 1 Answer. Using __setProperty () function in this Thread Group to store the token into a JMeter Property and __P () or __property () functions to read the value. Start JMeter. jMeter: Restart loop only after the previous loop is complete. I have a jmeter test plan below. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the companyJSR223. Moreover it's not required to write any code, you can go either for __setProperty() and __P() functions combination or for Inter-Thread Communication. Also looking into Constant Timer source it seems that you need to provide a Long value so change these 60000. More information: A Comprehensive Guide to Using JMeter Timers. You could use a JMeter variable or property to set a dynamic value. OS Process, Debug, and Flow Control Action Sampler Understand how to execute OS commands using OS process sampler. Module Controller can only execute the referenced Test Fragment, it will not really "go to" your T1 and the test will not start over. Pause for 1 second } 5. 1" 2020-04-14. I have read the user guide, here or on Blazemeter blogs regarding usage of flow action to implement dynamic pacing in Jmeter script with help of a JSR223 timer. err and jmeter. 2. 6. You need to ensure that JMeter sends Connection header with the value of keep-alive. The course syllabus is designed by considering the current job market trends and. log file. You have Flow Control Action sampler somewhere which stops the test;Similarly in the "main" thread group you can put Flow Control Action sampler as the "last" sampler so it will terminate the test when the main scenario ends. 1. It lets you control “when” to send a user request to a. Is there need to use plugin for calculating response time? Also in that question time to last byte and time to first byte are. 0. Q2 we don't know, most probably the reason is that your test doesn't run long enough so first thread isn't able to execute all samplers in scenarios 1 and 2 or there are some Logic Controllers which prevent these scenarios execution or there is a Flow Control Action sampler which doesn't allow the thread to go further, etc. Share. Follow the below steps to add the Gaussian Random Timer in the script: Select any appropriate element from the below list where you want to add the timer. In this course, you’ll learn to invoke key features of the latest version of this testing tool to achieve peak performance for your web applications, all the while improving the testing team’s productivity by developing realistic and scalable test plans and automation. HTML Assertions. 3. 3 Microsoft Windows 10 Enterprise 64-bit java version "14. and compare the entries for "successful" and "failed" executions in the jmeter. e. You can download a JMX of this example here and import it in your project using the JMeter project option. Instead, you use an element of the Constant Throughput Timer, Constant Timer, or Flow Control Action type. Add a Constant Timer as a child of the first request or Flow Control Action sampler at the beginning of the Thread Group 3 and configure them to sleep for 600000 milliseconds. Sorted by: 1. If the threads are still running, i need to stop their execution and start the next iteration. The Flow Control Action sampler is a sampler that is intended for use in a conditional controller. in this case the delay will be introduced before first request, see A Comprehensive Guide to Using JMeter Timers article for more information. There are 2 options: Add Flow Control Action sampler as the last request in the If Controller and configure it like:. Or by adding the next line to log4j2. They are processed in the order they appear in. Right-click on the element. 今回の環境。 $ java --version openjdk 11. JMeter Simple Controller Test A straightforward test that: Logs on Searches Updates Record Logoff If we add some Simple Controllers it makes the script easier to read as its split into functional. Test Action that will be used to Start Next Thread Loop; Test plan would have the following layout: Share. In addition you might want to check the Artifacts Directory and check jmeter. More information: JMeter WebSocket Samplers - A Practical Guide. it allows pauses to be included without needing to generate a sample. samples=10 delay=10. Add Flow Control Action sampler as a child of the If Controller and configure it to "Go to next iteration of Current Loop" However this way you cannot avoid incrementing the count of the Loop Controller and if/when you run out of iterations JMeter will exit the loop (unless it's something you're looking for), this way you can only skip. Phần 2: Hướng dẫn xây dựng kịch bản test. asked Feb 9, 2016 at 16:12. 11. ) takes place in the runtime scenarios in OctoPerf. it is immediate sibling of while controller. currentTimeMillis ()) Use the following __groovy () function as the While Controller's condition:1 Answer. If it doesn't - try increasing JMeter logging verbosity for the JDBC Test Elements by adding the next line to log4j2. Flow Control Action:0. Select the target to the simple controller on the other thread group which you wanted to run. For example, if you have 5 users in your thread. sh file. In this course, you’ll learn to invoke key features of the latest version of this testing tool to achieve peak performance for your. One of the HTTP request is the below screenshot where a refresh_token is already set as a hard-coded parameter when I recorded the script first time. The Throughput Shaping Timer plugin adds the following features to JMeter: The Throughput Shaping Timer element - a timer that sets the desired RPS schedule via the JMeter GUI. All the solutions I have tried reads the next line from csv file and logins with new user instead of previous one. e. Learn all the basic and advanced performance testing concepts with hands-on practical examples. e. 2) - generate parent sampler containing the nested samples. e. If you want a standard pause (think time) between pages, you can use the "add think times to children". repeat steps 1-2 98 more times. Select the “Manual proxy configuration” radio button. 99. CTRL + H. 4. It can be done by ticking Use KeepAlive box in the HTTP Request sampler: In that case the connection will close ( TCP FIN packet will be sent) when your thread stops so if you want to keep the connections open for 30 minutes - use either Flow Control Action. I ended up using a Test Action with 30s pause. The Flow Control Action sampler is a sampler that is intended for use in a conditional controller. My goal is to make the first 3 requests in a time X sec (about 10),. # Anonymous User - Product Search group1. Either add a Constant Timer as a child of the "Cancel" request and set "Thread Delay" to 3000. . So you have 2 options: Either periodically send the request for the token refresh in another Thread Group (token TTL minus some reasonable number of seconds), the pause between "refreshes" can be introduced using Constant Timer or Flow Control Action sampler The approach of: Having a separate Thread Group to generate/refresh the token with 1 thread and the required number of loops. To set the "duration" value to "$ {thinkTime}, where thinkTime is defined in the "Dedfined Variables" controller, I have to edit and save each one. HTTP Request. Follow answered Jul 3 at 13:07. You could use a JMeter variable or property to set a dynamic value Cụm bài viết của mình gồm các phần từ bắt đầu cho tới nâng cao: Phần 1: Giới thiệu và cài đặt. Basically the same as point 1 but if you need i. Share. Constant Timer. The solution is to use current thread (or. Provide details and share your research! But avoid. Apart from this your "way to achieve the above" is correct. 1 Samplers¶ Samplers tell JMeter to send requests to a server and wait. The Bearer tokens can be passed between the Thread Groups in 2 ways:First, add a Thread Group to Test Plan: Right-click on Test Plan. are JMeter Properties. samples=10 delay=10. JMeter files or test plans are saved in the ‘. According to JMeter Best Practices you should always be using the latest version of JMeter so consider upgrading on the version you will find at JMeter Downloads page on. A thread will be stopped at some moment of time (by pressing stop at gui while debugging, or by sending stoptest. In particular, JMeter does not execute the Javascript found in HTML pages. I have a custom protocol based on TCP and need to load test it using a JMeter script in the Azure load testing tool. The simplest groovy code that could be written in the JSR timer is “return <delay time>” where the delay time is in. In the “Connection” section, click on “Settings…”. JMeter also known as 'Apache JMeter' is an open source, 100% java based application with a graphical interface. If it is added at the Test Plan level then it acts as a global timer and the delay is added for all the samplers before the process. NaveenKumar created PerfAction which is available in the GitHub Marketplace. 6k次。1、简介Flow Control Action 采样器是一个用于条件控制器的采样器。测试元素不是生成样本，而是暂停或停止所选目标。此采样器还可以与事务控制器结合使用，因为它允许包含暂停而无需生成样本。对于可变延迟，将暂停时间设置为零，并添加一个 Timer 作为子项。Apache JMeter doesn't natively pace based on the number of tests per user. I need to run the login request every 4 minutes in order to get the bearer token. The reason for stopping the thread can be found in jmeter. e. 13 2021-10-19 OpenJDK Runtime Environment (build 11. Sampler. What should be used to extract 'userID' from first API response and use it as an input to second request. Execute the request in Postman. The value is shared between all virtual users running on the same load generator by default. Mouse over Add >. It scales web development by helping you measure and analyze application performance. So either put Timer as a child of first sampler in Login Controller, (it'll add delay also in first login) Or add a Flow Control Action at the end of the Logout controller with Timer as its child. The correct way of creating a delay via script-based timer is using return keyword, the value should have Long data type and the delay is in milliseconds. To pause (sleep) current or all thread for specified amount of time (duration is set in milliseconds). Anton, The most appropriate solution would be to use Test Action element of JMeter with pause option set to 6000 ms. The reason for stopping the thread can be found in jmeter. 2. From the list, select the recording template. Check “Use this proxy server for all protocols”. Dec 3, 2021 at 14:29. Apache JMeter doesn't natively pace based on the number of tests per user. This condition will be true when count value is strictly inferior to 10 AND categoryId is equal to. I am trying to achieve pacing in my JMeter script similar to LR. e. The delay can be introduced by either using a. 3 SamplerThe InfluxDB External reporting allows you to send metrics to your own InfluxDB database and display them in your own grafana dashboards. If you want to add a delay between each iteration of each thread add a Flow Control Action Sampler as the first sampler and set the delay in the controller. Add initial controller. Add Flow Control Action between Controllers and choose Pause with 10000 miliseconds. Flow Control Action, however the Pause doesn't actually pause for me. jmeter pass multiple values to variable in Body Data. The timer will be applied before the sampler is executed. In order to make it happen each 10 minutes add Flow Control Action sampler and configure it to introduce delay of 600000 milliseconds. JMeter supports a variety of samplers, such as HTTP Request, JDBC Request, FTP Request, and more. ③ 保存したjmeter_ja. More information: How to Convert Your Postman API Tests to JMeter for Scaling. Server waits 3 seconds. setIgnore () vars. either add the Poisson Random Timer as a child element of the next sampler or as a child element of Flow Control Action. You may be interested. How it can be implemented in Jmeter. Sampler. XML and XML Schema Assertions. Add __isVarDefined () function to the If Controller's condition, this way the Dummy Sampler will be executed only if the variable set by its child Regular Expression Extractor doesn't exist: If you just want to exit the while loop after the first occurrence of the data you're looking for - add Flow Control Action sampler. 6) Flow Control Action. Use Flow Control Action sampler which have various behaviors, i. Jmeter - Controlling iteration using pacing time. Follow. I don't think your Uniform Random Timer really works, according to JMeter Scoping Rules it really adds a delay only when it's run in context of a Sampler. The "Stop" action stops the thread or test after completing any samples that are in progress. This field is required. As of JMeter 5. Under our “ Once Only Controller ”, we’ll want to add a “ BeanShell. I added flow control action (for delay) before my login. sh signal to the headless load stations during the load test itself), so I don't. Debug Sampler. Note: There might be more issues for flow control action when Break. Hover the mouse on ‘Add’. 1. The solutions I have tried are: 1. To begin recording, understand the business flow and have your input data ready. Select ‘Test Plan’ on the tree. Flow Control Action is just below the while controller i. According to the documentation: Properties are not the same as variables. Convert setUp Thread Group to "normal" Thread Group Add a Flow Control Action sampler which will introduce delay of, say, 29 minutes and add more loops to the Thread Group; This way each 29 minutes JMeter will request for the new token and update the property holding the token with the new value. If you have a possibility to detect the "finish" event from the "main" thread group you can pass it to the "refresh" thread group via __setProperty () function or Inter-Thread Communication Plugin. getThread(). Something looks like this. Run Thread Groups in parallel. Take a look at While Controller, it executes its children while JMeter Function or Variable you set in the "Condition" input field resolves to true. Some of the important updates include HTTP request changes, improvements for the search and the results tree, new capabilities for flow. We will be passing thread group user count, ramp-up period, thread group duration information via property files to the test. To make these names unique, I tried. 1. Thread Group# All Thread group implements interface ThreadWrapper. When you generate the token use __time() function to store the token generation time into a JMeter Variable like ${__time(,tokenGenerationTime)} Depending on the way you design your test either use __counter() function or Counter test element or a pre-defined JMeter variable which holds the current iteration of the Loop Controller or While. putObject ('whileLoopStart', System. 对于可变延迟，将暂停时间设置为零，并添加一个 Timer 作为. The "sleep" for 11 hours and 55 seconds can be created using Flow Control Action sampler. Click on Thread Group. Dmitri. bat on Windows and jmeter. Constant Timer) as a child of the 2nd request. Flow Control Action is a sampler that is intended for use in a conditional controller. If the request took 1000 mSec, it will apply 4500-1000 = 3500 mSec as the pacing. In this section, you will learn how to create a basic Test Plan to test a Web site. 0 is out! article: Check resume video download between iterations in case you want the plugin to download from where it left off in the last iteration. A Constant Throughput Timer element sets the Target Throughput property to your desired rate of samples per minute. You could use a JMeter variable or property to set a dynamic value. How to determine when thread group is finished I have 2 threadgroups (ignore the. Add Flow Control Action controllers to IF controllers to break from the current loop if it is successful. The following link gives a working code Restarting a user thread conditionally in JMeter where setTestLogicalAction is called from SampleResult. Parts of the test plan can also be saved as a different selection. Share. You need to ensure that JMeter sends Connection header with the value of keep-alive. The new options are highlighted in. 1" 2020-04-14 Note: There might be more issues for flow control action when Break current loop is used, so if you have time please investigate. Sorted by: 1. For some actions that might take a long time, ensure you set a big enough timeout: ; Adjust the timeout in end-clause on a Citrix Sampler if this sampler must make a zone hash/OCR . . Make sure that you understand every JMeter. In the thread group the duration is set to 300 sec. . last_sample_ok}"=="false",)} and add Flow Control Action sampler as a child of the If Controller 6) Flow Control Action. How should I decide whether to have three different thread groups to run these 3 APIs or a single thread group should suffice ? - I would go for a single Thread Group as it assumes actions of a single virtual user (or a group of virtual users) . The following procedure explains how to change a Counter variable configuration:If you want to store the accessToken value into a JMeter property for using in other Thread Group(s) be aware that properties are global for the whole JVM and remain until JMeter is restarted so if you define a single accessToken property - each JMeter Thread (or iteration) will overwrite the value. By flow control this proposal understands: ability to execute one request multiple times per sessionIt is processed once. Overall, JMeter samplers are an essential component of load testing and performance testing. If you want to add a random delay consider using JMeter function Random $ {__Random (1000,5000,)} Share. The easiest would be just adding a Flow Control Action sampler after the While Controller and configure it like:1. Rather than generate a sample, the test element either pauses or stops the selected target. Attached to the flow control action, a pre. OctoPerf load testing - Flow Control Container Action documentation. This element needs to be placed before the 'HTTP Request' in your loop controller as mentioned below: HTTP Request (1) HTTP Request (2) Loop Controller (Y times)In order to create the steps within the test plan offered by the Apache JMeter tool, the following concepts must be known: Test Plan: using it will make JMeter record the data returned by the. Demo: JMeter Performance Testing.