作用：用来设置集合点，其作用是：阻塞线程，直到指定的线程数量到达后，再一起释放，可以瞬间产生很大的压力. If you want to send 1 request per minute - add Constant Throughput Timer to your request and set Target Throughput to 1. Throughput increased by factor of 2. Oct 10, 2022 at. Constant Throughput Timer can. Precise Throughput Timer is more "precise" but a little bit harder to use as you need to provide controlled throughput. If the request took 1000 mSec, it will apply 4500-1000 = 3500 mSec as the pacing. Constant throughput timer not working properly. Also, JMeter tries to set the throughput per minute, so tests should be longer then 1 or 2 minutes with that timer. With 100 threads you will get 50 requests per second. Some commonly used JMeter Timers are: Constant Timer; Uniform Random Timer; Precise Throughput Timer; Constant Throughput Timer; Gaussian Random Timer; JSR223 Timer; Poisson Random. JMeter Constant Throughput Timer Example. I ended up using constant_throughput to control the number of requests per second. The purpose of the ‘Timer’ element is to pause a JMeter Thread for a certain amount of time. This class implements a constant throughput timer. Just to recall in terms of Apache JMeter the meaning of Throughput is ‘requests per second’ or ‘samples per second’ send to the server by JMeter. The JMeter Ramp-up Period is the amount of time in seconds it will take Apache JMeter™ to add all test users (threads) to a test execution. The Constant Timer is self-explanatory: it delays each sampler by a constant Thread Delay value. if the transaction controller has 3 child samplers and you want the whole transaction to be executed 100 times/minute - you need to set the target throughput to 300 requests/minute. And run the following to. jmeter. If you want to execute 300 000 queries in 24 hours you need to introduce a rate limiting on JMeter side to execute 208. e. Constant Timer with a Thread Delay of 5 milliseconds. This is "closed workload" approach, and it has major drawbacks (see here why). For example, if the number of threads is set to 10 and the ramp-up time is set to 100 seconds, JMeter will use 100 seconds to start and run 10 threads, and each thread will start 10 seconds after the previous thread was started. I want to run this test for five or ten minutes. Right click on "Test Plan" node. I want to change the expected request. 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. you will be able to send 50 requests per second, etc. If it is. e. Throughput of 300 requests per minute gives 300/60 = 5 requests per second Constant Throughput Timer works on minute level so make sure that your tests lasts longer than 1 minute; Each JMeter thread representing virtual user executes nested samplers upside down, when. Gaussian Random Timer. Relation between Constant throughput timer, transactions per sec and throughput in summary report 0 How to get number of throughputs per second as 500 in jmeter54. you have 2 users and 2 seconds response time - the load will be 1 requests per second; you have 4 users and 2 seconds response time - the load will be 2 requests per second; etc. I have a cloudsearch endpoint on AWS. Precise Throughput Timer allows you to reach and maintain the desired throughput (number of requests per given amount of time) Gaussian Random Timer - allows you to simulate "think time". 0. Throughput Shaping Timer is a plugin and you need to install the plugin. 1) with Constant Throughput Timer value as 1200/min with "All active threads" and Timer added at the root of script. at org. The Constant Throughput Timer is again a more powerful Timer, not in the same way the previous. getMaxThroughputAsInt(ThroughputController. Add two entries to the "User Defined Variables. How to Use “ Constant Throughput Timer ” in JMeter Loadium · Follow 3 min read · Feb 22 Let’s think about an end-to-end scenario for an e-commerce website. Here are the workarounds: Calculate the number of threads you need to achieve your target. This will add Constant Timer at Thread Group level. This is what we need to control request frequency. We highly recommend using the Uniform Random Timer. See How to use JMeter's Constant Throughput Timer article for more details. This will add Constant Timer at Thread Group level. 1 Answer. La principal diferencia entre estos dos temporizadores esta en que el CTT inserta un pausa constante mientras que el CTT. Use Cases. Throughput Shaping Timer. This plugin also works similarly to Constant Throughput Timer, which pauses the threads based on the target Throughput. JMeter also provides a timer component, ‘Constant Throughput Timer’, which you can use to set the value of Transactions per. Case 2: With sleep time (Using Constant Timer) In this case, throughput will be controlled by introducing sleep time in between threads. 1 Answer. Simply set the wait_time = constant_throughput (0. How to create JMeter test with parallel execution in one thread group with specific throughput? 0. You can add this element to your test plan by following “ Thread Group -> (right click) -> Add -> Timer -> Constant Throughput Timer ” path. The JMeter Timers available are as follows: BeanShell Timer. For each thread, the variable will be assigned one of the values from the series in sequence. The difference between the uniform random timer and other two random timers (Gaussian and Poisson) are: 1. Constant Throughput Timer. jmxaccording to jmeter manual ramp up is: How long JMeter should take to get all the threads started. Target throughput (in samples per. Given you use Concurrency Thread Group it makes more sense to switch to Throughput Shaping Timer which can be connected to the Concurrency Thread Group. Total Http Requests - 24, Total Http Request/min - 12, Test Duration 2min, Waiting time between requests per minute : 60min/12req = 5sec . Simply set the wait_time = constant_throughput (0. If you introduce artificial delay of 3 seconds - it will make the overall throughput lower. This can be done by using Apache JMeter™´s Constant Throughput Timer and the Beanshell server. I have been trying to use JMeter to test my server. Now let us see in brief about some commonly used timers of Jmeter. Gaussian Random Timer A Gaussian Random Timer calculates the thread delay time. 1. it worked. 1 Answer. 039 ( As shown in the above figure) The delay of each sample is 5000 ms. Despite word "constant" in its name, you can use i. So you need to supply the sufficient amount of threads in the Thread Group. The time is calculated from the start of the first sample to the end of the last sample. Also Constant Throughput Timer is only capable of slowing down JMeter to limit its. In case you have only 1 request as in your scenario then it will generate Throughput of 20 request/sec (sometimes 20. For the given scenario in sample scenarios image with duration 1hr , i tried to set the work load model as given below with the request hits 40000 and TPM 667:. So first of all try increasing the number of threads; Make sure to follow JMeter Best. 4. JMeter BeanShell Timer is a scripting-based timer. Set Target Throughput = 40. BSF Timer. If you want to slow down JMeter to the desired number of requests per minute it can be done using Timers. Constant Throughput Timer will let you control the flow of. answered Apr 20, 2014 at 16:43. So basically throughput is the number of requests which JMeter was able to within test duration time frame. e. Concurrency Thread Group doesn’t provide the ability to define initial delay, step transition and ramp-down - which the Stepping Thread Group does. JMeter Properties are global, can be accessed from different thread groups and persist all the time while JMeter is running. Then extract the file and run JMeter: $ tar -xf apache-jmeter-5. Constant Timer adds a delay after the request completes (not after start), which doesn't fit either. referenced in the file. 1 Thread Group. Constant Timer. Improve this question. Implementing Pacing with Groovy Scripting. Also, it works only on a minute level so you need to properly calculate the ramp-up period and let your test run long enough. First of all try increasing the number of threads. Here are the workarounds: Calculate the number of threads you need to achieve your. The various timers provided by JMeter include the constant timer, uniform random timer, constant throughput timer, Poisson random timer and Gaussian random timer. Second I would recommend checking whether your system under test has enough headroom in terms of resources (CPU, RAM, Network, Disk, etc. Share. JMeter Throughput by Example. 0. The time is calculated from the start of the first sample to the end of the last sample. What is throughput time in JMeter? Throughput is calculated as requests/unit of time. So you must supply enough threads in the Thread Group to create more requests per second than you're trying to achieve and then limit the number of requests per second to the desired rate using. although the Timer is called the Constant Throughput timer, the throughput value does not need to be constant. Pre Processors: allow you to perform operations/actions before. Example 1: you have submitted a request and it returns "pending" status. Subscribe. So the options are in: Increase the number of threads in the Thread Group to i. JMeter Timers obey JMeter Scoping Rules so it's sufficient to add a single Timer and it will apply the desired throughput to all Samplers it its scope. e 300s. I ran it for 10 mins. The ability of the server in terms of how much load it can take. org. Constant Throughput Timer is precise enough on minute level so you might need to adjust your ramp-up period or consider using Precise Throughput Timer instead Constant Throughput Timer can only pause the threads to limit JMeter's requests execution rate to the given value so make sure to supply sufficient amount in the Thread. JMeter Constant Throughput Timer. 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. 2. The value can be changed in various ways: You could set the throughput using a property or variable. Constant Throughput Timer is available out of the box with JMeter. Ramp-up is the time for JMeter to kick off the virtual users from point 1. 4 requests per minute, it can be done using i. Constant Throughput Timer - You can set the amount of Throughput (samples per minute) by adding a timer after the request to slowdown the script, so it fits the throughput value. JMeter's Constant Throughput Timer can only pause the threads in order to limit requests execution rate to the desired value, it won't kick off extra threads if current amount is not sufficient. Introduction. Essentially, it sticks with a target throughput very closely, and doesn’t allow for the flexible. Use CTT in Test Plan level,not in thread group level. 0” your throughput during the test will be 1 request per minute. JMeter Throughput Timer Element Working. Follow answered Oct 22, 2015 at 16:42. Total Http Requests - 24, Total Http Request/min - 12, Test Duration 2min, Waiting. In JMeter, there are 9 different Timer types. And to manage throughput per minute you could use "Constant Throughput Timer". And then execute the test we see that the execution of each sampler is delayed by 2000 milliseconds. Constant Throughput Timer: Java 8 incompatibility #3368. Config Elements, b) a Thread Group (probably Ultimate), c) a Constant Throughput Timer (to limit the overall transaction rate), then d) 8 ThroughPut Controllers, and then INCLUDE the scripts in respective controllers, e) Listeners. The Constant Timer can be used to pause each thread for the same “think time” between requests. is correct, but if you leave it as is JMeter will execute requests as fast as it can. Now check the time difference between the 1st sample and 11th sample, it is 1 minute. This implies per minute 10 requests will be executed. Also its effect is not immediate so during 1st minute of your load test you need to control virtual users arrival rate using Ramp-Up Period setting on Thread Group level. Constant Timer) as a child of the 2nd request. I think that you're misusing Constant Throughput Timer. Throughput Controller - You can set the Max number of executions, OR the Percentage of executions of the sample (i. If current number of threads is not enough in order to. Introduction. As per documentation>. 50 (you may need even more)タイマーは、JMeterが次のリクエストを送信するのを遅らせるために使用されます。. The. For example, this can be used to assign a distinct user id to be used by each thread. Instead of focusing on trying to hit the same request at the same time, which is fiddly in JMeter, you should setup your test to be a realistic representation of the sort of load you want your application to support. Constant Throughput Timer. The achieved target may be slightly high. Using a uniform random timer allows you to pause the test execution for a random time, where you can. Concurrency depends on your test plan and application response time. 10 000 requests in one hour is something like 166. Constant Throughput Timer can only pause the requests to limit JMeter samplers execution rate to desired value, it won't kick off any extra threads if the current throughput is lower than expected. Sample Time of Sample 2 is 172 ms. 6. The most intuitive thing I could think of was using Constant Throughput Timer to control the number of requests sent,. Let’s see how we can use constant throughput in JMeter as follows: With the help of constant throughput, we can keep constant time. I have tried JMeter with a constant throughput timer with throughput = 1500000 per second and running 1000 threads. a) To maintain a constant throughput rate b) To simulate real user behavior c) To generate random data d) To pause the thread execution Answer: a) To maintain a constant throughput rate Explanation: The Constant Throughput Timer in JMeter is used to maintain a constant throughput rate by controlling the number of requests per. JMeter – Constant Throughput Timer. Simple Controller i. Let’s now re-run our test plan and check the View Results Tree. Given your setup the only way of having exactly 399600 samplers is using Throughput Controller in. And one of them has an obvious title – “Constant Throughput”. We know that JMeter is an open-source, free tool used to conduct load and performance testing on static and dynamic web applications. 1. log. Plus “Constant Delay Offset”. Constant Throughput Timer (bộ hẹn giờ thông lượng không đổi) được sử dụng như một yếu tố định hướng mục tiêu giúp đạt được thông lượng mong muốn (tổng số yêu cầu). JMeter slaves are totally independent beasts hence they don't know anything about each other so both nodes will produce 200 TMP therefore you will get 400 in total. Different Thread Groups having different number of threads; Throughput Controller; Switch Controller or Weighted Switch Controller plugins. Constant Throughput Timer is precise enough at minute level, so if you configure your test to last longer - you will see the throughput going down gradually and after 1st minute it should be throttled to your 100 requests per minute. See How to use JMeter's Throughput Constant Timer guide for more details. I want to measure the response time of this 100 users login which I've. I'm currently using Apache JMeter to run load tests on the REST interfaces of my backend application. Also, it works only on a minute level so you need to properly calculate the ramp-up period and let your test run long enough. In JMeter, there are 9 different Timer types. Constant Delay Offset (in milliseconds): The number shows a constant delay which will be added in random number generated by Gaussian Function in the range of given deviation value. Select it and you will see 3 fields as below. Share. How to add "HTTP Cache Manager" element? You can follow the below steps: 1. Target Throughput behavior of Constant Throughput Timer in JMeter. Save my name, email, and website in this browser for the next. I'm thinking that in my overall Test Plan, I will add all the a). A JMeter Timer is a built-in plugin tool for JMeter that can help with spacing out your sample requests. Also, it works only on a minute level so you need to properly calculate the ramp-up period and let your test run long enough. 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. In planning our load tests, our goal is often to measure whether or not our application (not just the. JMeter now supports. or Users - 2000. Click on Constant Throughput Timer; This timer has the following fields,. In this case, we are using a JMeter plugin - Throughput Shaping timer. And to manage throughput per minute you could use "Constant Throughput Timer". jmeter. 2. 1. Constant Throughput Timer introduces variable pauses, calculated to keep the total throughput (in terms of samples per. The full jmeter. Constant Throughput Timer allows us to keep total throughput constant. Since: 4. Now check the time difference between the 1st sample and 11th sample, it is 1 minute. 2. This is what we need to control request frequency. Share. e. Download. I am adding throughput timer but then I need to set up. Select it and you. This includes any intervals between. There is a Constant Throughput timer, which as far as I understand, is to control throughput for individual requests. This can be used to add some delay/think time between each request. To implement pacing in Apache JMeter™, we can use either use Groovy Scripting or one of these two timers: the Constant Throughput Timer or the Throughput Shaping Timer. Download. As per documentation: Set Target Throughput = 40. The Throughput Shaping Timer plugin also adds a number of properties to the standard JMeter functionality: elementName_totalDuration is a sum of all durations from the Request Per Second Schedule. I would say that these timers are mutually exclusive. 4. Constant Timer. The time is calculated from the start of the first sample to the end of the last sample. ; Here I will quote only the introduction of these three techniques, for complete detail please go through the. So overall 20 users - ramped up in 1 seconds. 0 (inclusive) and 1. I am trying to configure a test for signup-login with invalid credentials imitating bruttforce attack. Constant Timer; Gaussian Random Timer; Uniform Random Timer; Constant Throughput Timer; Synchronizing Timer; JSR223. Remember 2 things: Constant Throughput Timer is precise enough on minute level, make sure your test lasts long enough so it could be. I have used "Constant Through Timer" to control the flow of transactions. Long time JMeter users had to try their tests on and on, finding exact number of threads and timer delays that produce desired number of requests per second (RPS) to server. If you want JMeter to run 5 concurrent samplers each minute you need to go for different setup, to wit: Your Sampler. 0. This plugin is specially designed to schedule RPS loads. 3. If it is added under a sampler then the parent sampler will wait for the defined time. I ended up using constant_throughput to control the number of requests per second. Constant Timer. testelement. 5K users or somewhere around it. 0 (inclusive) and 1. รวมถึง. I have a requirement that in ultimate thread group , constant throughput value needs to be changed for every 5 mins using beanshell pre-processor. according to your application design you can retry this. Uniform Random Timer The uniform random timer causes each thread to wait for a random time. Given you have 200 threads and 300 seconds ramp-up time it means that JMeter will start 200 threads in 300 seconds. Típicamente, para modificar la carga en una prueba se suele variar la cantidad de UVs (Usuarios Virtuales). Its called JMeter Throughput Constant Timer. Hot Network QuestionsThe formula is: Throughput = (number of requests) / (total time). This is known as Think Time and Jmeter provides different types of timers to help add the right amount of between samples: Constant Timer – will pause for the same amount of time. A Constant Throughput Timer will look like the picture above. The constant timer has the following components. host, port – jmeter’s host and port for the machine, where it is running. If you want to send specific amount of requests during this hour consider using Constant Throughput Timer, but be aware of the following:. $ {__Random (1000,5000,)} –> sẽ trả về giá trị. is correct, but if you leave it as is JMeter will execute requests as fast as it can. La principal diferencia entre estos dos temporizadores esta en que el CTT inserta un pausa constante mientras que el CTT inserta un pausa aleatoria. Constant Throughput Timer pauses active threads to reach throughput level you define. For different time of the day I'd use a different throughput value. 作用：让jmeter以指定数字的吞吐量进行压测. jmx: JMeter project file. Jmeter: Constant throughput Timer with Ultimate Thread Group. Results: The JMeter Timers available are as follows: BeanShell Timer. Constant Throughput Timer (bộ hẹn giờ thông lượng không đổi) được sử dụng như một yếu tố định hướng mục tiêu giúp đạt được thông lượng mong muốn (tổng số yêu cầu). apache. This timer tries to maintain a constant throughput throughout the test and achieve the target. Constant Throughput Timer pauses active threads to reach throughput level you define. Given here are some JMeter listeners that you can use for this purpose: Summary Report Aggregate Report Aggregate Graph Graph Results. Follow answered Nov 2, 2022 at 4:51. In planning our load tests, our goal is often to measure whether or not our application (not just the. Constant Throughput Timer can only pause threads in order to limit JMeter's throughput to the defined value. I am using a Constant Throughput Timer with "Calculate throughput based on: all active threads in current thread group" selected. Such types of goals can be targeted by Throughput Timers. This video features Precise Throughput Timer in #JMeter. GitHub Repo: that the most simplest ways to control throughput in your tests is using either standard "out-of-box" Constant Throughput Timer or custom Throughput Shaping Timer from jmeter-plugins collection. Constant Throughput Timer. As you see, no other timers except Througput shaping timer. JMeter Constant Throughput Timer is used as a goal-oriented element which helps to achieve the desired throughput. Constant Throughput Timer: This timer define the number of sampled need to be executed per. Gaussian Random Timer. If you want to limit your test. org; The function of timers is to delay the requests. Moreover, it's more or less precise only on "minute" level, if your test lasts less - you may not see the impact. Constant Throughput Timer. Constant Throughput Timer treats samplers individually therefore you need to multiply the throughput for the transaction by the number of its children samplers, i. It in a way reflects the capacity of the server. I am searching how to increase the number of sent requests per second . If your goal is to execute X requests per second - go for one of the following test elements: Constant Throughput Timer; Precise Throughput Timer (available since JMeter 4. JMeter - Timer - "Constant Throughput Timer" C onstant Throughput Timer is used as a goal-oriented element which helps to achieve the desired throughput (Total Number of Requests). Other (and the main factor) is your application response time. Why even making use of the Constant Throughput Timer I sometimes get a number of requests higher than the value specify in the Target Throughput (21 in the above image) If a indicate a value of 21 in. 866 + 172 + 5000 = 22:05:07. We will conduct a sample load test with 100 concurrent users (threads) and evaluate the throughput value. You can also use a JMeter Function or Variable in the “Thread Delay” input. can only pause the threads to limit the throughput (requests per minute) to the desired value. Constant timer means the interval between each request is a fixed value. Constant Throughput Timer can only pause the threads to reach specified "Target Throughput" value so make sure you provide enough virtual users (threads) to. 1. The total number of threads in the Ultimate Thread Group will be 250. 0 Calculate Throughput based on: all active threads in current thread group So now, in 1 minute, JMeter will try to send 3000 requests and in 5 minutes, request count will be more or less around 15000. Constant Throughput Timer - You can set the amount of Throughput (samples per minute) by adding a timer after the request to slowdown the script, so it fits the throughput value. {"payload":{"allShortcutsEnabled":false,"fileTree":{"src/components/src/main/java/org/apache/jmeter/timers":{"items":[{"name":"gui","path":"src/components/src/main. The timer will be applied before the sampler is executed. Both the scenarios you have mentioned may require thinking for a moment that there's something fishy if they both use a different unit of time. Constant Throughput Timer treats samplers individually therefore you need to multiply the throughput for the transaction by the number of its children samplers, i. 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. To achieve this I have configured a Constant Throughput Timer to 12000 requests per minute (active for. I also had constant. Throughput, essentially, is the. Tool ที่เราใช้ในการทำ performance test ก็คือ JMeter ซึ่งเป็น tool opensource ที่เขียนด้วย Java สำหรับการทำ load test การจำลอง request จากหลาย user ที่เข้ามาพร้อมกันทำ. It may decrease if other timers deny the constant. 一定のタイマーは、一定の遅延時間の値を追加することで構成できる一定の時間だけ次の要求を. jmeter; Share. java by adding it to the source directory of my project folder. Please suggest what should be the workaround of it? You can go for Constant Throughput Timer, despite the word "constant" in its name it doesn't have to be constant, you can use __P() function for specifying the desired throughput and amend it from Beanshell Server, another Thread Group, using JSR223 Test Elements, etc. Basic Timers: Constant Timer → the most basic timer type which adds a simple delay to your test with no other parameters. 4 Timers do not define the start and end of each timer: . 7 requests per second. My test config in jmeter. I have tried with below jmeter tools. If 20 users process 2400 records per hour and each record assumes 3 web page calls, it means that 7200 requests will be made in one hour which in its turn stands for 120 requests per minute (this is what you should enter into the timer's "throughput" area) or 2 requests per second. 1. These sample results have various features like data size, elapsed time, etc. Throughput Shaping Timer Properties. Say a request returns on average within 1 second and you have no think times in your test then to simulate 300 requests per minute you only need 5 threads. Though you can develop test plans manually by building them from within the JMeter GUI, or generating them via some domain-specific language (DSL), recording scripts by JMeter's HTTP(S) Test Script Recorder is one of the. mirek (Bug 64928): Component impacted: Constant Throughput Timer Case: value of target throughput set to: ${__P(tpm)} (or any other variable/property) tpm value is not a valid positive float. I am developing a JMeter Script according to the below requirement. The application. To get the exact sampler's count at the end of the test, you need to eliminate transaction's count from the aggregate report to check whether constant throughput timer is working fine or not. What do you mean by "total transactions"? If you want to send 30 requests in 15 minutes more or less evenly distributed you need to use Constant Throughput Timer instead of the Synchronizing Timer and configure it to send 2 requests per minute. 0. This video features #Constant #Throughput Timer in #JMeter. Timers provided in JMeter Constant Timer. Below timers are used to implement pacing in Jmeter to achieve the desired load/Business transactions. Petr. It can be defined in terms of a variable or function call, and the value can be changed during a test. Do not include multiple CTT in your test script as it will lead to a hoax. Concurrency can be controlled via Constant Throughput Timer or Throughput Shaping Timer and monitored via Server Hits Per. Precise Throughput Timer. Throughput Controller - You can set the Max number of executions, OR the Percentage of executions of the sample (i. If above information is not enough try to elaborate your query and include i. Select "Test Plan" node. Here is my script detail:->Simple Login request. The first thread group randomly picks one of several. และเราสามารถใช้ Constant Throughput Timer ในการกำหนดจำนวน request ต่อนาทีที่เรา. 1. Jmeter: Constant throughput Timer with Ultimate Thread Group. . Constant Throughput Timer is excellent to regulate the number of hits without changing the. You can use Constant Throughput Timer or Throughput Shaping Timer in order to limit JMeter's throughput to the given numbers and see whether it will be able to complete 10k requests in 1 hour or not. 0 (exclusive) Multiplied by “Random Delay Maximum”. For example: Constant Throughput Timer: Precise Throughput Timer: Why even making use of the Constant Throughput Timer I sometimes get a number of requests higher than the value specify in the Target Throughput (21 in the above image) If a indicate a value of 21 in the Target Throughput , isn't this constant supposed to guarantee a maximum value of 21 requests? Hướng dẫn sử dụng Timer trong JMeter – Add Precise Throughput Timer 2. Timer: By default, a JMeter thread executes samplers in sequence without pausing. The Throughput Shaping Timer element is a timer that sets the desired RPS schedule via the JMeter GUI. Constant Throughput Timer: Target - 60,000/min (60 secs) - all active threads, Threads (Users) - 200 with Ramp up - 1 sec, Duration: 1 hour. The thread delay is a constant in milliseconds: Uniform Random Timer: One step above the basic. If your goal is to mimic real users behavior as close as possible -. JMeter – Constant Timer. thread group (thread = 1000, ramp up = 100 sec, loop count = 1) loop controller( above 3 request with loop count = 12) constant timer = 300000 millisecond. Now if you want to control the rate of transactions per second or the number of samples to execute you can use Constant Throughput Timer. Like this: Throughput Controller config: Based on is Percent Execution and Throughput is 20. Long time JMeter users had to try their tests on and on, finding exact number of threads and timer delays that produce desired number of requests per second (RPS) to server. can only pause the threads to limit the throughput (requests per minute) to the desired value. Constant Throughput Timer; Don't use GUI to run JMeter tests as it might have very negative impact on test results, JMeter GUI is only for tests development and. Constant Throughput Timer will be enough for your scenario. And I set Loop Count: forever. 1). Constant Throughput Timer : The Constant Throughput Timer is like the Precise Throughput Timer, except that it has fewer settings. I have used the constant throughput timer before, also as child of certain requests.