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. ログイン. You could use a JMeter variable or property to set a dynamic value. All major components of Jmeter such as Thread Group, Samplers, Listeners and Config Elements are explained in detail later in the article. Flow Control Action Random Container Action If Action While Action Loop Action ForEach Action Property Action Link Action Post Processors Post Processors Regexp Variable Extractor JSON Variable Extractor. You may look into this discussion for better examples and. bat on Windows and jmeter. 2. 1 Answer. Add a comment. e. You can enter numeric values (including decimals) in the value area, and then choose between minutes. Add a JSR223 Sampler just before the While Controller and store the current time into a JMeter Variable using the following code: SampleResult. Get the token in one Thread Group which performs the authantication and set a delay for i. Create a test plan. The way JMeter works is 1 masterTo get JMeter support on Jenkins, you need to use the Performance Plugin. : client_id: Your application's Client ID. 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. JMeter While Controller upon exit does not run Flow Control Action. Right click Thread Group > Add > Timer > Constant Timer. My thread groups should not start consecutively or concurrently. - Option 1 – use the BeanShell Sampler and System. For those new to JMeter, one easy way to create a test plan is to use the Recorder. How to stop a JMeter load test in a few easy steps: Step 1. I used startup delay under Threadlifetime setting of the Thread Group and it seems to work. Improve this answer. it allows pauses to be included without needing to generate. e extracting some data out of json) is to use a BeanShell Sampler in way like described above. Contents. ③ 保存したjmeter_ja. - Option 2 – use the Debug Sampler and View Results Tree. Phần 4: Mở rộng – Tạo lập Scripts tự động bằng HTTP (S. Subscribe to Our Channel : you want to know how to use flow control action in jmeter or searching for a jmeter flow control action ex. The loop could be organized in the following way. JMeter files or test plans are saved in the ‘. csv file(s). 使用默认选项【Current Thread】及【Pause. Improve this answer. See also how to read data from a CSV file. Flow Control Action (was: Test Action ) SMTP Sampler; OS Process Sampler; MongoDB Script (DEPRECATED) Bolt Request; 18. 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. xml file. See the below image, with the Flow Control Action sampler disabled JMeter runs requests as fast as it can and when I enable it JMeter runs requests each 2 seconds according to. jtl once the test is finished. JMeter load testing is a testing process that determines whether or not web applications under test can satisfy high load requirements. Dmitri. I am using jMeter for my testing script. Add If Controller after the Sampler which you suppose to be failing. Add Flow Control Action . In this YouTube Shorts video, we will be exploring the Flow Control Action Controller and Sampler in JMeter. See the below image, with the Flow Control Action sampler disabled JMeter runs requests as fast as it can and when I enable it JMeter runs requests each 2 seconds according to. Flow Control Action・・・Flow Control Action自身の実行を何秒遅延させるかを設定します。 「Sampler > Flow Control Action」の設定 Logical Action on Threa. To apply a timer after a sampler, add the Constant Timer as a child element of. Ram (Bug 63150): Hi Team, Hope you are doing well. Mark the installation checkbox, and select Install without restart. In the next step, on the General Tab, we can configure it with these general details: Now go to the Build Tab to specify how we’ll build the project. Instead, you use an element of the Constant Throughput Timer, Constant Timer, or Flow Control Action type. Sampler. Currently, Taurus script language allows only sequential execution of requests with no flow control abilities. 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. 2) Create trust store with Java keytool keytool -importcert -alias APPLICATION_NAME_CA_PUBLIC_CERT -file. Add a Thread Group under Test Plan. pdf__idx} More information: Using the While Controller in JMeterThe Flow Control Action and Result Status Action Handler elements make it easier for loop breaking and loop switching to the next iteration. Flow Control Action (was: Test Action ) SMTP Sampler; OS Process Sampler; MongoDB Script (DEPRECATED) Bolt Request; 18. Selenium JMeter Test Case Example – HTMLUnit Driver; 5. OS Process, Debug and Flow Control Action Sampler - Script; Chapter 4 : Integration of Selenium with JMeter. 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. Name Description; URL:The InfluxDB External reporting allows you to send metrics to your own InfluxDB database and display them in your own grafana dashboards. Notice that JMeter's [scoping rules] execute Timers before Samplers. this is achievable by Timers or Flow Control Action sampler. For tests distributed over several load generators, make sure to configure your Setup Thread to be Global so it is executed only once per test (instead of once per load. 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. a) Follow the same Step above to create an HTTP Request and add the second API. A Constant Throughput Timer element sets the Target Throughput property to your desired rate of samples per minute. You can also use CLI mode to run remote tests. - depending on. If you want a standard pause (think time) between pages, you can use the "add think times to children". 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. 在jmeter使用过程中，接口之间相关关联，而有些接口响应时间较长，导致下个接口执行时，可能未能获取到需要的信息。. Phần 2: Hướng dẫn xây dựng kịch bản test. repeat steps 1-2 98 more times. JMeter and selenium can be integrated via plugin support of web drivers. Without these you will not be able to login. jmx is the jmeter file configured for testing the above mentioned scenario. Decide if to stop the thread by using If Controller and Flow Control Action Sampler combination. 1 you're supposed to use JSR223 Test Elements and Groovy. Add JSR223 Sampler and put the following code into Script area: 0. Follow. Given the placement of your Constant Timer according to JMeter Scoping Rules it's getting executed before each request which doesn't seem to be something you're looking for. Once we have opened the. 2. Flow Control Action sampler after it and configure it to pause for the desired number of seconds. MM. Create a new JMeter test plan containing a few basic elements. So that the host will be 192. Share. Use "start next thread loop" option in thread group 3. 8. Flow Control Action is just below the while controller i. The flow control container lets you control how often the contained actions are executed. cer. A simple JMeter test with sequential requests controlled by a Response Assertion. The easiest way of debugging If Controller is enabling logging for it, you can do it in 2 ways: From JMeter GUI having the If Controller selected choose Help -> Enable Debug, Enable JMeter Debug Mode. The easiest would be just adding a Flow Control Action sampler after the While Controller and configure it like:The execution order of the elements in an Apache JMeter performance test plan is very important, it helps understand the timeline of events and how your test will behave. Mixing versions may not work correctly. This field is requiredConfiguring JMeter for testing Control Flow plugin¶ This section explains how GeoServer performances are improved when using Control-Flow plugin. This is kind of weird as it does work and introduces the pause when the thread reaches the sampler. First and foremost thank you for the help. Ram (Bug 63150): Hi Team, Hope you are doing well. As of JMeter 5. Functions are shortcuts you can use to avoid adding a script block into your virtual user. In this example we configured JMeter to use a custom keystore so that our virtual users will. Think Timeで負荷量を調整する 2. This way first thread group will execute the Login generating or refreshing the. Each Sampler can be preceded by one or more Pre-processor element. 4. Flow control Action - This is special type of Sampler,. Right click on Test Plan > Add > Non-Test Elements > HTTP (S) Test Script Recorder. In the thread group the duration is set to 300 sec. 会員登録. Percent executions per VU: causes the container to execute a certain. 11. it allows pauses to be included without needing to generate a sample. The new options are highlighted in. It is used to send HTTP/HTTPS requests to the target web server. putObject ('whileLoopStart', System. Flow Control Action, however the Pause doesn't actually pause for me. We will need a regular Thread Group to contain our test, and to that we will add a “ Once Only Controller ” and a “ Loop Controller ”: Step 2. This will start the JMeter proxy server which is used to intercept the browser requests. O’Reilly members experience books. Add Flow Control Action sampler to the end of the "LoginAPI" thread group and configure it to "sleep" for i. Hover the mouse on ‘Thread (Users)’. 7. Percent executions per VU: causes the container to execute a certain. 0. Finally, go through the appropriate section on how to build a specific type of Test Plan. Flow Control Action Random Container Action If Action While Action Loop Action ForEach Action Property Action Link Action. Add a Test Action Sampler In the "Duration (milliseconds)" field, set the value as simply $ {mydelay} Right Click Test Action Sampler > Add > Timer > Beanshell timer. Subscribe to Our Channel : Flow Control Action sampler is used to modify the execution flow of JMeter by performing specific actions. To pause (sleep) current or. Simple Controller; Loop Controller; Once Only Controller; Interleave Controller; Random Controller; Random Order Controller; Throughput Controller If you just put the Flow Control Action - it will delay each thread (virtual user) separately. put("date", date. Read a line from a file. 2. chalz. Subscribe to Our Channel : Flow Control Action sampler is used to modify the execution flow of JMeter by performing specific actions. You could use a JMeter variable or property to set a dynamic value. Share. In this course, you’ll learn to invoke key features of the latest version of this testing tool to achieve peak performance for your. JMeter files or test plans are saved in the ‘. FifoTimeout=120 in user. Improve this answer. It scales web development by helping you measure and analyze application performance. Add Flow Control Action sampler as the last Sampler in your "iteration" Add JSR223 Timer as a child of the Flow Control Action Sampler and put the following code. It can also change the order of requests coming from their child elements. Parts of the test plan can also be saved as a different selection. In Windows you can do something like Invoke-WindowsApi "kernel32" ( [bool]) "DebugActiveProcess" @ ( [int]) @. 0 While Controller exposes current iteration via __jm__While Controller__idx pre-defined variableJMeter 5. Provide details and share your research! But avoid. Apache JMeter is a Java-based desktop application, which can be used for load testing to measure the performance of a system or used for stress testing to see if a system is crashed gracefully. JMeter Loop Controller. 5 it's not possible, you have the following options: Instead of setting the duration set the fixed number of iterations in the Thread Group. getThread(). Token can be passed from one thread group to another using __setProperty and __P (). Either add a Constant Timer as a child of the "Cancel" request and set "Thread Delay" to 3000. 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. Switch from setUp Thread Group for "LoginAPI" to normal Thread Group and configure it to run either desired number of iterations or forever. dd HH:mm:ss", yourDate) vars. 20. The InfluxDB External reporting allows you to send metrics to your own InfluxDB database and display them in your own grafana dashboards. What is JMeter flow control action? Flow Control Action sampler is used along with the logical controllers to control the sampler execution. . bat] on each server host. 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. Apache JMeter doesn't natively pace based on the number of tests per user. Jmeter - Dummy Sampler vs Flow Action. Each Thread Group in a JMeter Test Plan simulates a particular real-world application scenario. Depending on what you are doing, you could create an execution test using Selenium IDE for Firefox. Jmeter version 2. requests. Add Thread Group; Right click on the Test Plan and add a new thread group: Add-> Threads (Users)->Thread Group. To make these names unique, I tried. 3. 在前面一篇有提到：如果希望在 sampler 执行完之后再等待，则可使用取样器里面的测试活动 (Test. functions. It scales web development by helping you measure and analyze application performance. Return to HTTP (S) Test Script Recorder, and click the Start button at the top. Import the previously saved HAR file on OctoPerf. 要約. 1. The main purpose of the If Controller is to control the JMeter execution script flow. The structure of JMeter functions is: $ {__functionName (var1, var2, varN)} Functions can be used for. JMX’ extension. This HTTP request uses this refresh token to post a request and obtain an access token and the access token is used in the subsequent API requests. Share. b) Add "HTTP Message Header" and "View Result Tree". Add Flow Control Action sampler after the Runtime Controller and set it to "Pause" for 60000 milliseconds Just in case be informed that as per JMeter Best Practices you should always be using the latest version of JMeter so consider upgrading to JMeter 5. Thanks in advance! while-loop; jmeter; Share. and compare the entries for "successful" and "failed" executions in the jmeter. Set Break Current Loop in the Flow Control Action. Understand how to execute OS process, Debug and Flow control Action samplers can be used in your test plan. . [If this is difficult to do, you can use the JMeter Proxy Recorder to record the login sequence. 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) . IF the condition is true, THEN execute the statements inside the IF block. Flow Control. 0. getProperty (“file. it allows pauses to be included without needing to generate a sample. The Throughput Shaping Timer plugin adds the following features to JMeter: The Throughput Shaping Timer element - a timer that sets the desired. Apache JMeter is an open-source, Java-based, load testing tool that can be used to analyze the functional behavior of a system and measure the performance of a system under a load test. The next step is to open the registration page and verify that any user can open it. Conclusion. Add Flow Control Action sampler after the logintokensso request and configure it to "sleep" for 30 seconds: Or if you have to use the timer for any reason you can still go for the Flow Control Action sampler but with zero delay and make your Constant Timer a child of this Flow Control Action sampler:By default timers, pre and post-processors execution time is not being included into report so the delay might happen but you just don't see it. You can define all of your default variable within a TCP Sampler Config that. Now let’s discuss some commonly used samplers provided by Apache JMeter. 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. The Response Assertion element which appears under request “ A ” controls the. If you want to learn about downloading and installing JMeter, you can check this video. Use the indentation to check that your flow control action is correctly setup. Selenium Integrating with JMeter;. Phần 2: Hướng dẫn xây dựng kịch bản test. 定数スループットタイマーで負荷量を調整する. encoding” property. 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. Constant Throughput Timer：固定吞吐量定时器 Gaussian Random Timer：高斯随机定时器 Constant Timer：固定定时器 Synchronizing Timer：同步定时器. Follow answered Dec. My goal is to make the first 3 requests in a time X sec (about 10),. Controls the behavior of the flow, by either enabling or disabling flow behavior (such as logging) or by choosing a branch when the flow runs. Add Flow Control Action sampler after the Runtime Controller and set it to "Pause" for 60000 milliseconds Just in case be informed that as per JMeter Best Practices you should always be using the latest version of JMeter so consider upgrading to JMeter 5. Datadog also offers a JMeter integration that you can activate during your tests. If we take a Test Plan that manages the loop count using the Thread Group. encoding” property value from STDOUT. There are 2 possible solutions: You can put some form of "hard wait" using Flow Control Action sampler or suitable JMeter Timer so the next "GET" request will always be executed in i. JMX’ extension. Decide if to stop the thread by using If Controller and Flow Control Action Sampler combination. It can generate reports to help eliminate bottlenecks of the system or to see how it performs under heavy loads. Sorted by: 1. Flow Control Action sampler is used along with the logical controllers to control the sampler execution. last_sample_ok} 2. Other than load testing, you also. encoding”)get “file. Other (and the main factor) is your application response time because JMeter. A Test Plan comprises of at least one Thread Group. In order to achieve your goal, you can place your timer in 2 ways. Sorted by: 10. You can create your own implementation of the algorithm using the JSR223 timer. The timer will be applied before the sampler is executed. In order to run the test, please place all the attached files in the bin folder of Jmeter. Set the number of iterations in the configuration. 1. Flow Control Action sampler is used along with the logical controllers to control the sampler execution. This condition will be true when count value is strictly inferior to 10 AND categoryId is equal to. Also you have options to continue execution, but move to next iteration using. The script also lets you specify the optional firewall/proxy server information:Sorted by: 42. Advanced Scripting. What is JMeter flow control action? Flow Control Action sampler is used along with the logical controllers to control the sampler execution. Follow answered Aug 13, 2021 at 6:54. Jmeter 5. Simple Controller; Loop. 0 and 60K+ other titles, with a free 10-day trial of O'Reilly. Note that from version 2. この記事ではJmeterで負荷量を調整する方法2つを説明している. 如《JMeter 测试组件介绍》所述，JMeter 内置 HTTP/HTTPS、TCP 等支持多种协议，还具备插件扩展机制。 MQTT 协议身为物联网界的主流协议，虽然并非 JMeter 自带的协议类型，但在物联网测试场景中极为普遍。为了支持 MQTT 协议的规模测试，EMQ 映云科技开发了基于 JMeter 的 MQTT 协议开源测试插件：. By running JMeter remotely, you can replicate a test across many low-end computers and thus simulate a larger load on the server. According to the problem, there is a need to execute a particular request to execute in a loop. Most commonly used test elements are supported natively: a dedicated Virtual User action is created for each one. Note that from version 2. 10, recording has been improved to better handle embedded resources and creation of certificates on the fly. Robust: leverage proven open-source technologies like JMeter. a) Follow the same Step above to create an HTTP Request and add the second API. When I turn off Follow Redirects I correctly get the values extracted, but I don't get a cookie that I need for the next request. I have recorded JMeter script for a website. Sampler. E. 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. I want to Control the Throughput at Transaction level, But not at Request/Hits Level. If there is another Sampler after it- you can add a Timer as a child of. I suppose it's some bug in JMeter because thousands of samples are calculated correctly and just couple of them include timer duration. . The loop will be continued for up to 10 minutes and I want to set a delay 1 minute after another. Controller. I. OctoPerf load testing - JMeter settings documentation page. It scales web development by helping you measure and analyze application performance. Now we can run the same test again with 2,000 users. CheckHoursOfOperation;. 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. 0. Constant Throughput Timer will try to slow down JMeter's throughput to the defined value by sleeping for the period of time before executing the Sampler if needed. log file. Pay attention to loops and other pieces of code that require a long execution time, they can also slow down the hit rate of your virtual users significantly. Especially in combination with one of the other items above. 0 now with the O’Reilly learning platform. 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. I wanted to check if I can use JMX dummy sampler to implement the same JSR223 timer?I am trying to achieve pacing in my JMeter script similar to LR. Add JSR223 Sampler and put the following code into Script area:0. The Flow Control Action Controller and Sampler a. Skilled in Front-end, Back-End Manual as well as Automated Quality Assurance, Databases, Management, Scrum, Configuration Management, and Linux. REM JMeterを起動する jmeter. Take a look at Synchronizing Timer and Flow Control Action Sampler combination, example implementation: More information: Using the JMeter Synchronizing Timer. 1 Samplers¶ Samplers tell JMeter to send requests to a server and wait. The workaround is to add as first child of Loop Controller a Test Action (renamed to Flow Control Action since 5. Add Flow Control Action sampler to the end of the "LoginAPI" thread group and configure it to "sleep" for i. Scenario 2: If the iteration is completed. Loop Controller Random Controller Module Controller Other Important Controllers Loop Controller Example Step 1) Configuring Thread Group Step 2). 📕 Related Resource: JMeter Tutorial: Getting Started With the Basics. For example, you want some group of requests to execute more times as compared to the others, use the controller to solve this purpose. It means no sampler = no delay. Isha presents an highly interactive and instructor led live “Performance Testing Using Apache Jmeter ” Training by our industry expert with hands-on experience. - Option 1 – use the BeanShell Sampler and System. 2) - generate parent sampler containing the nested samples. 1. Since JMeter 3. I have added the login request and a flow Control action in a thread with three threads (expected to be run three times every 4 min) and a main thread to call the services. 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. These expressions are composed of: boolean operations && or ||. Simply drop the file in the HAR area or use the Choose File. Flow Control Action is a sampler that is intended for use in a conditional controller. jmeter set up. Rather than generate a sample, because the test element either pauses or stops the selected target. The Flow Control Action sampler is a sampler that is intended for use in a conditional controller. How to add ‘Concurrency Thread Group’ in the script? Select ‘Test Plan’ node. You can also use CLI mode to run remote tests. 2. – JessieB. Multiple Thread groups in jmeter. To set the "duration" value to "$ {thinkTime}, where thinkTime is defined in the "Dedfined Variables" controller, I have to edit and save each one. Create a new JMeter test plan containing a few basic elements. Share. Add Flow Control Action . 从JMeter 5. Normally when you're getting the token you're getting its TTL as well which could be extracted into a JMeter Variable. The Constant Timer is self-explanatory: it delays each sampler by a constant Thread Delay value. Obtain the default value of “file. Share. HTTP Request. Put your requests under the Loop Controller. OS Process, Debug and Flow Control Action Sampler - Script; 4. Use an XPath expression to read from a file. asked Feb 9, 2016 at 16:12. To add a new Flow Control Action under a Thread Group/Controller: CTRL + 6: To add a new JSR223 PostProcessor under a Test Plan/Thread Group/Controller/Sampler:. Techniques used within JMeter to determine issues in the system include the Stepping and Concurrency Thread Groups. Execute the request in Postman. Let’s assume that we have a basic script with two request samplers: the first request sampler is located one step before the. CTRL+SHIFT+G. Step 2: Pass that Token to the Subsequent API's. 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. Timer. b) Add "HTTP Message Header" and "View Result Tree". I have a JMeter HTTP Request that returns a 302 response with some parameter fields in the redirect URL that I need to extract (ex. make those in the loop count for Y. Janesh. Add a Flow Control Action and add in it a JSR223PreProcessor with this code. Add Flow Control Action sampler after the logintokensso request and configure it to "sleep" for 30 seconds: Or if you have to use the timer for any reason you can still go for the Flow Control Action sampler but with zero delay and make your Constant Timer a child of this Flow Control Action sampler: By default timers, pre and post-processors execution time is not being included into report so the delay might happen but you just don't see it. xml file. 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. you should have N loops (using Loop Controller e. and compare the entries for "successful" and "failed" executions in the jmeter. To open a new test plan (It may prompt to save the current unsaved test plan) CTRL + M. Flow Control Container Action. Third parameter can be used as a variable name to save random value. If you need rather separate script executions you can use your operating system scheduling mechanisms like Windows Task Scheduler or. This can be. Figure 01: JMeter Timer Elements Scope of JMeter Timer: 1. Option 1 You can exist a loop control when a condition is satisfied with an If controller and a Flow Control Action. CTRL + H. the method is indeed listed in methods in . jmeter压测学习31-取样器之测试活动 (Test Action) 技术标签： jmeter. Read an entire file. This variable can be overwritten in the command line using: jmeter -n -t LoadTestJmeterScript. Apache JMeter Tutorial. Ensure that "token" request is being executed each 10 minutes by adding Flow Control Action sampler configured to sleep for 9 minutes 50 seconds or something like this. This basically means that you can run samplers only if a certain condition is true. get ('myVar'). These can be found out by inspecting the code of the login page. 26. csv). last_sample_ok}"=="false",)} and add Flow Control Action sampler as a child of the If Controller In the JMeter script, Constant Timer is used to add a constant delay before processing a sampler. This will add the recording capability to JMeter. 使用默认选项【Current Thread】及【Pause. To apply a timer after a sampler, either add it to the next sampler, or add it as the child of a Flow Control Action. ③ 保存したjmeter_ja. Techniques used within JMeter to determine issues in the system include the Stepping and Concurrency Thread Groups. 3. Add Loop Controller under the Thread Group and set "Loop Count" to $ {samples}. Jmeter configuration Since JMeter 2. CTRL + G. this adds a "flow control action" after each page/transaction controller. Debug Sampler. equals ('<EOF>'),)} The. But despite trying several different configs, Flow Control Action never runs. Overall, JMeter samplers are an essential component of load testing and performance testing. 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.