Once again, it’s really easy to install this plugin. Sorted by: 42. 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. 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:. stop() SampleResult. 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. If you want to "wait a certain time between two requests" the most straightforward option is using Flow Control Action sampler. Most commonly used test elements are supported natively: a dedicated Virtual User action is created for each one. Since JMeter 3. 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. Share. Understand how to execute OS process, Debug and Flow control Action samplers can be used in your test plan. It scales web development by helping you measure and analyze application performance. Jmeter 5. My thread groups should not start consecutively or concurrently. 04, mixed mode, sharing)The browser closes when the thread (virtual user) doesn't have any more Samplers to execute. Make sure that you understand every JMeter element before adding it to your test plan, this will help create faster performance tests and not jump into. and compare the entries for "successful" and "failed" executions in the jmeter. OctoPerf load testing - JMeter settings documentation page. To set the "duration" value to "$ {thinkTime}, where thinkTime is defined in the "Dedfined Variables" controller, I have to edit and save each one. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. You could use a JMeter variable or property to set a dynamic value. 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. Follow answered May 21, 2021 at 8:25. Password . Subscribe to Our Channel : Flow Control Action sampler is used to modify the execution flow of JMeter by performing specific actions. 1 Answer. The timer will be applied before the sampler is executed. This way first thread group will execute the Login generating or refreshing the. 📕 Related Resource: JMeter Tutorial: Getting Started With the Basics. 2. 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. For example, you want some group of requests to execute more times as compared to the others, use the controller to solve this purpose. Test Plan. RedLine13 exposes certain test-specific metrics to JMeter (such as the “ Test ID ” number) which can be pulled into tests via auto-generated. Share. Q #12) Explain the flow of the Test Script Recorder. Insert Constant Timer as a child of the 2nd request, the timers are executed before each Sampler in their scope so it will introduce the 3 seconds delay between requests as well: if you place the constant timer at the same. 1OS Process, Debug, and Flow Control Action Sampler. JMX is an open test format that allows the test plan to be run in a text editor. 0. Debug Sampler. Sau đó ta chọn thêm Timer cho Action này. 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. 1 Samplers¶ Samplers tell JMeter to send requests to a server and wait. A Test Plan comprises of at least one Thread Group. Share. Follow. This will start the JMeter proxy server which is used to intercept the browser requests. What's？ Apache JMeterのコマンドラインオプションを確認する方法をメモしておきます。 環境. JMeter files or test plans are saved in the ‘. Flow Control Action sampler after it and configure it to pause for the desired number of seconds. this is achievable by Timers or Flow Control Action sampler. 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. functions. 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. JMeter is a Java based desktop application that can be used for performance testing of different kinds of client-server applications like websites, web services, databases, FTP servers etc. 1. If this is not possible, then manual inspection of the code may be needed to determine what the Javascript is doing. Great, we're just one step behind having a virtual user created from a Charles recording. I'm scraping the token with JSON extractor, and parcing it using the BeanShell post-processor, by the following command:0. Within each Thread Group, we may place a combination of one or more of other elements − Sampler, Logic Controller, Configuration Element, Listener, and Timer. b) Add "HTTP Message Header" and "View Result Tree". bat] on each server host. The simplest way is to add a single 'Constant Timer' to your thread group at the same level as your HTTP requests. Right click on Test Plan > Add > Non-Test Elements > HTTP (S) Test Script Recorder. Using Flow Control Action sampler so it would run at given intervals. jmeter. It does however have a small number of limitations. So that the host will be 192. For instance, if you want to save an HTTP request sampler with a listener, you can save it as a test fragment and use it in other. Flow Control Container Action. This can be. I want to Control the Throughput at Transaction level, But not at Request/Hits Level. Use Random JMeter function. Either add a Constant Timer as a child of the "Cancel" request and set "Thread Delay" to 3000. 3. HTTP Request. What is JMeter flow control action? Flow Control Action sampler is used along with the logical controllers to control the sampler execution. How to stop a JMeter load test in a few easy steps: Step 1. Option 1 You can exist a loop control when a condition is satisfied with an If controller and a Flow Control Action. Jmeter configuration Since JMeter 2. If you want to introduce a delay between 2 iterations add Flow Control Action sampler and define the desired delay there. This will add the recording capability to JMeter. you declared two variables count and categoryId, you may use the condition: $ {count} < 10 && "$ {categoryId}" == "abc" . 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。2. URL. You can choose Stop to complete samplers in progress. Recording Controller. RendezVous¶. Dmitri T Dmitri T. Run JMeter Tests With Jenkins. 4. Especially in combination with one of the other items above. csv). 0. Hover the mouse on ‘Thread (Users)’. Think Timeで負荷量を調整した場合、何らかの理由ででサーバ側のレスポンスタイムが落ちた場合、目標スループットは出せなくなる。JMeter While Controller. Add Thread Group and specify the required number of threads and iterations. 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. Other than load testing, you also. Set the number of iterations in the configuration. 25 minutes. 1 Answer. 1. Note that from version 2. 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. It is based upon the JMeter InfluxDB backend listener. - Option 2 – use the Debug Sampler and View Results Tree. 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. Sampler. If we were to add a Constant Timer to the test and set the delay to be 2000 milliseconds. The loop will be continued for up to 10 minutes and I want to set a delay 1 minute after another. Let’s look at the controller. In order to perform the JMeter test, you have to create a test plan at first. Add Flow Control Action sampler to the end of the "LoginAPI" thread group and configure it to "sleep" for i. samples=10 delay=10. Add JSR223 Sampler and put the following code into Script area: 0. Improve this answer. 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. Add 10 user every second for the ramp-up - you need to set ramp-up period of 3 seconds in the Thread Group. In general I don't think that: test which does nothing but opening connections. Constant Timer. A Constant Timer element runs in the context of. 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) . jmx is the jmeter file configured for testing the above mentioned scenario. The JMeter Transaction Controller can be a very handy tool for organizing different segments of your test and determining how those segments will appear in a report. In the thread group the duration is set to 300 sec. The if Logic Actions can contain condition expressions. Flow Control Action, however the Pause doesn't actually pause for me. Share. JMeter Loop Controller. 0. Other (and the main factor) is your application response time because JMeter. The CSV Dataset could be found in Config Element and should contain a path to a particular file with data (e. e. By flow control this proposal understands: ability to execute one request multiple times per sessionThis plugin is specially designed to schedule RPS loads. 2 there is no WebSocket support out of the box. 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. If the request took 1000 mSec, it will apply 4500-1000 = 3500 mSec as the pacing. CTRL + 7: For the purpose of adding a new JSR223 PreProcessor to a test plan, thread group, controller, or sampler: CTRL + 8Apache 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. Mark the installation checkbox, and select Install without restart. 3. These expressions are composed of: boolean operations && or ||. Notice that JMeter's [scoping rules] execute Timers before Samplers. In this course, you’ll learn to invoke key features of the latest version of this testing tool to achieve peak performance for your. last_sample_ok} 2. JMeterでタイマー以外で待つ方法 makoto_hrg 2022年9月6日 14:28. Read from CSV delimited file. Note. 0. encoding” property. JMeter has become an industry-standard tool for conducting functional, load, performance, and regression tests on web applications. I use JMeter v5. If the WebDriver Sampler is the only sampler in the Thread Group you can add i. wait 1 second. This offers the following features:Experienced Software Development Engineer Test Lead with a demonstrated history of working in the information technology and services industry. Check their documentation to have more details. If you want to learn about downloading and installing JMeter, you can check this video. def date = Date. Now, let’s go to Jenkins home page and click on “create new jobs”, specify a name, select Freestyle project and click “OK”. To apply a timer to a single sampler, add the timer as a child element of the sampler. Here’s how:Just open your JMeter runner script (located in the JMeter bin folder) and replace the value of max heap space (which goes after -Xmx flag) that has these default values: HEAP="-Xms512m -Xmx512m". Create Virtual User: Import HAR. Add Flow Control Action . The Flow Control Action Controller and Sampler a. I used startup delay under Threadlifetime setting of the Thread Group and it seems to work. e extracting some data out of json) is to use a BeanShell Sampler in way like described above. requests. You may directly click on New button from the toolbar or use keyboard. jMeter: Restart loop only after the previous loop is complete. This fixed the same problem for me, except I did not have a LoopController. make those in the loop count for Y. It can generate reports to help eliminate bottlenecks of the system or to see how it performs under heavy loads. IF the condition is true, THEN execute the statements inside the IF block. You may need to evaluate the property name, using the ${__V()} function. 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. e. Percent executions per VU: causes the container to execute a certain. Apache JMeter™ functions are values in the JMeter script that enable flexible and more sophisticated management of the test scenarios. 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. 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. It is an open source tool provided by Apache without licensing cost. JSR223 Actions execute Java or Groovy script during load test execution. Ram (Bug 63150): Hi Team, Hope you are doing well. 65 Question (s) 35 Mins of Read. last_sample_ok}"=="false",)} and add Flow Control Action sampler as a child of the If Controller. Irrespective of how much time the previous request took, it will apply the remaining time. Set the timer value to however many milliseconds you need (in your case 120000), and it inserts a delay between all requests in that thread group. Logic Controllers help you to control the flow the order of processing of samplers in a thread. Functions are shortcuts you can use to avoid adding a script block into your virtual user. I've created 2 thread groups. This sampler can also be useful in conjunction with the Transaction Controller, as it allows pauses to be included without needing to generate a sample. 56. Dec 3, 2021 at 14:29. It describes the core concept of JMeter in layman’s terms to clear your basics and make a strong platform of performance testing skills using the JMeter tool. bat on Windows and jmeter. The Thread Group is an element of JMeter that controls the number of threads to execute your test. For example, if the test case describes the deletion of a user from the user database, adding the user is aThere are two parts to a Delay For action: the value (how many) and the unit (the type of time). I have a jmeter test plan below. For variable delays, set the pause time to zero, and add a Timer as a child. This will add the recording capability to JMeter. To begin recording, understand the business flow and have your input data ready. 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. Other than load testing, you also. bat on Windows and jmeter. We would like to show you a description here but the site won’t allow us. 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. 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. In this YouTube Shorts video, we will be exploring the Flow Control Action Controller and Sampler in JMeter. e. so just comment out/remove this quitBrowser function, recompile the plugin and replace the version in the "lib/ext" folder with your own one. You can add Flow Control Action with Pause Action instead. 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. It is based upon the JMeter InfluxDB backend listener. Take a look at Synchronizing Timer and Flow Control Action Sampler combination, example implementation: More information: Using the JMeter Synchronizing Timer. . Jmeter version 2. Additionally if you want all the users to finish the action - add a Synchronizing Timer and set the number of users to group by to be equal to the number of threads in the Thread Group. . I need to run the login request every 4 minutes in order to get the bearer token. I have recorded JMeter script for a website. 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. This is kind of weird as it does work and introduces the pause when the thread reaches the sampler. log file. Most server-based applications usually have more than one scenario, so creating a separate Thread Group mapped with each use case. csv). All major components of Jmeter such as Thread Group, Samplers, Listeners and Config Elements are explained in detail later in the article. The timer will be applied before the sampler is executed. This will allow us to based on that as an associated metric. Flow control Action - This is special type of Sampler,. ③ 保存したjmeter_ja. JMeter implements this while loop by using the JMeter. Step 2: Pass that Token to the Subsequent API's. For distributed testing, run JMeter in server mode on the remote node (s), and then control the server (s) from the GUI. If you want to do this in. A simple JMeter test with sequential requests controlled by a Response Assertion. To pause (sleep) current or all thread for specified amount of time (duration is set in milliseconds). Decide if to stop the thread by using If Controller and Flow Control Action Sampler combination. In one thread group. I have recorded JMeter script for a website. Learn all the basic and advanced performance testing concepts with hands-on practical examples. Ở đây ta sử dụng Uniform Random Timer. So just use this __Random () function directly where required. Also, you will get some simple and ultimate tips and tricks. 1. They should start after some delays between them. Config Element. toString())1 Answer. Make sure JMeter can access the server. The delay can be introduced by either using a. How to stop a JMeter load test in a few easy steps: Step 1. 2) - generate parent sampler containing the nested samples. Think Timeで負荷量を調整する 2. What should be used to extract 'userID' from first API response and use it as an input to second request. To take the screenshot ( G raphics) of the selected element. cer. 1 during the load test. 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. 30-second wait between iterations - Add Flow Control Action sampler and configure it to pause for 30000 milliseconds: Run the test for 60 minutes - find the relevant Thread Group configuration below: Roughly 24,000 calls per. Create a test plan. 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. Thus, you'd probably end up with something like ${__V(${__P(propertyName)})} which would only declare a variable with a null value. JMX is an open test format that allows the test plan to be run in a text editor. you should have N loops (using Loop Controller e. Sampler. Subscribe to Our Channel : Flow Control Action sampler is used to modify the execution flow of JMeter by performing specific actions. To pause (sleep). 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. Most server-based applications usually have more than one scenario, so creating a separate Thread Group mapped with each use case. e. Token can be passed from one thread group to another using __setProperty and __P (). Setting up Apache JMeter. How to control or decide the thread groups execution flow/order in JMeter? jmeter; flow-control; threadgroup; Share. 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. JMeter has become an industry-standard tool for conducting functional, load, performance, and regression tests on web applications. c) Now Add the. Use the indentation to check that your flow control action is correctly setup. A while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. The solution is to use current thread (or. Name. Rather than generate a sample, the test element either pauses or stops the selected target. Add Flow Control Action sampler as a child of the If Controller and configure it as follows: this $ {__Random (3000,8000,)} function will generate random think time. 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 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. public class TransactionControllerextends GenericController implements SampleListener, Controller, Serializable. accounts. The tutorial assumes you already have JMeter installed on all the systems. 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 can define all of your default variable within a TCP Sampler Config that. 0. The Throughput Shaping Timer plugin adds the following features to JMeter: The Throughput Shaping Timer element - a timer that sets the desired. BeanShell Scripting Basics and Variables; Advanced Post and PreProcessors;Here is a Video Tutorial: Controllers are basically used to control the execution flow. JMeter's elements are all about scopes and execution hierarchy. Thread behaviour is defined according to ramp up and destroyed once the number of iterations per thread has elapsed. Logic Controllers. 0? A new Apache JMeter™ version 5. Flow Control. 2) Create trust store with Java keytool keytool -importcert -alias APPLICATION_NAME_CA_PUBLIC_CERT -file. In Windows you can do something like Invoke-WindowsApi "kernel32" ( [bool]) "DebugActiveProcess" @ ( [int]) @ (JMETER_PID). Constant Timer. If you need rather separate script executions you can use your operating system scheduling mechanisms like Windows Task Scheduler or. Set Break Current Loop in the Flow Control Action. samples=10 delay=10. Also be aware that starting from JMeter 3. e. A flow control action is an action that: Does not need a contact or a participant to succeed. You'll start by mastering assertion types and scripts. Add Flow Control Action sampler after the last request. 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. jmeter set up. 1. Thread Group. Add a relevant JMeter Timer (i. Go to JMETER_HOME/bin and start JMeter with jmeterw. By: RedLine13. The Label field in the Summary Report is derived from the Transaction Controller's Name attribute. Follow. Improve this answer. Rather than generate a sample, because the test element either pauses or stops the selected target. in this case the delay will be added after the last HTTP Request sampler 二、Jmeter 测试活动Flow Control Action 实现Think time三、Jmeter固定定时器1. For the purpose of adding a new Flow Control Action within a Thread Group/Controller: CTRL + 6: To add a new JSR223 PostProcessor to a test plan, thread group, controller, or sampler. Apache JMeter doesn't natively pace based on the number of tests per user. This field is required. The next step is to open the registration page and verify that any user can open it. This could be an old bug in JMeter < 2. this is achievable by Timers or Flow Control Action sampler. With regards to other approaches most probably the way you're introducing the delay works according to JMeter Scoping Rules and not to your expectations. To open the online H elp page for the selected element. Phần 4: Mở rộng – Tạo lập Scripts tự động bằng HTTP (S. 1. Right click on Test Plan > Add > Non-Test Elements > HTTP (S) Test Script Recorder. To apply a timer to a single sampler, add the timer as a child element of the sampler. Nhập thời gian bạn muốn: Action này sẽ “Pause” lại trong khoảng từ 600 ms -> 1000 ms. Import the previously saved HAR file on OctoPerf. Go to the Plugins page. You can upload additional JMeter configuration files or other files that you reference in the JMX file. Flow Control Action Random Container Action If Action While Action Loop Action ForEach Action Property Action Link Action. Get the sampler name (label). TCP Sampler. You can include timers duration by checking "Include duration of timer and pre-post processors in generated sample" box. Note that from version 2. [If this is difficult to do, you can use the JMeter Proxy Recorder to record the login sequence. Without these you will not be able to login. Share. bat. Phần 3: Sử dụng Regular Expressions làm việc với Session IDs và Tokens. 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. 1. Add Flow Control Action at the end of the test for pausing exact time before next loop. . get ('myVar'). Jmeter 5. A Constant Throughput Timer element sets the Target Throughput property to your desired rate of samples per minute. encoding”)get “file. Irrespective of how much time the previous request took, it will apply the remaining time. Go inside the bin folder. ) with child Throughput Controller set X percents (X is integer, 0 <= X <= 100) - so than X% from N loops is integer value too. e. Each Thread Group in a JMeter Test Plan simulates a particular real-world application scenario. Currently, Taurus script language allows only sequential execution of requests with no flow control abilities. E. 0 and 60K+ other titles, with a free 10-day trial of O'Reilly. Container Action Delay Action Flow Control Action Random Container Action If Action While Action Loop Action ForEach Action Property Action Link Action. The loop could be organized in the following way. Add a Flow Control Action and add in it a JSR223PreProcessor with this code. The course syllabus is designed by considering the current job market trends and. Additionally if you want all the users to finish the action - add a Synchronizing Timer and set the number of users to group by to be equal to the number of threads in the Thread Group. e. 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. 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. Step1: Create a Test Plan. – A test case might contain preparational steps. . Basics on properties & command line: if you need to pass variables through the command line, properties are indeed the correct choice. 0开始，当使用默认的HC4实现时，JMeter将在每个线程组迭代时重置HTTP状态（SSL状态+连接）。如果您不想要此行为，请设置= false. 2 Answers. Cụm bài viết của mình gồm các phần từ bắt đầu cho tới nâng cao: Phần 1: Giới thiệu và cài đặt. Flow Control Action (was: Test Action ) SMTP Sampler; OS Process Sampler; MongoDB Script (DEPRECATED) Bolt Request; 18. Asking for help, clarification, or responding to other answers. The script also lets you specify the optional firewall/proxy server information:JMeter has become an industry-standard tool for conducting functional, load, performance, and regression tests on web applications. 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. Sorted by: 0. Share. Or add JSR223 Sampler as the last request in the If Controller and put the following code into "Script" area. But in Thread Group control panel, enter Thread Properties as follows: It will make one user request to the web server google. Normally when you're getting the token you're getting its TTL as well which could be extracted into a JMeter Variable. Create a new JMeter test plan containing a few basic elements. I used startup delay under Threadlifetime setting of the Thread Group and it seems to work. Share. e. Copy the file you're going to upload to JMeter's "bin" folder. Let’s assume that we have a basic script with two request samplers: the first request sampler is located one step before the. The loop could be organized in the following way. If you're not that good at programming go for Flow Control Action sampler instead of trying to replicate its functionality in code,. If you don't have such a possibility you can consider adding an If Controller which will be checking the number of active threads and in case. Datadog also offers a JMeter integration that you can activate during your tests.