This is used when we want each thread to wait for the same amount of time. Right click on "Test Plan" node. JSR223 Timer. Different Timer Types. ramp up to 6000 samples per min and so on up to. Results Action Set Handler 4. 1. Precise Throughput Timer. is correct, but if you leave it as is JMeter will execute requests as fast as it can. For further detail check JMeter blog about Constant Throughput Timer. JMeter: Holding Session for a certain. JMeter sends specific types of requests to the server; with the help of samplers, the thread group decides which request is required to. The achieved target may be slightly high. JMeter offers several options to control the load. Constant Throughput Timer added with throughtput = 10 and Calculate Throughput based on = all active threads. Constant Timer with a Thread Delay of 5 milliseconds. 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. However, in one case I need an additional constant timer because I need to wait a certain time between two requests. JMeter Property via __P() function as "Target Throughput" value. Other (and the main factor) is your application response time. Oct 10, 2022 at. This is "closed workload" approach, and it has major drawbacks (see here why). JSR223 Timer. Constant Throughput Timer: Target - 60,000/min (60 secs) - all active threads, Threads (Users) - 200 with Ramp up - 1 sec, Duration: 1 hour. HTTP Sampler ii. Tool ที่เราใช้ในการทำ performance test ก็คือ JMeter ซึ่งเป็น tool opensource ที่เขียนด้วย Java สำหรับการทำ load test การจำลอง request จากหลาย user ที่เข้ามาพร้อมกันทำ. N. You can also use a JMeter Function or Variable in the “Thread Delay” input. This way, You can use constant throughput timer in your load test plan to achieve. I am developing a JMeter Script according to the below requirement. 6 requests per minute or 2. Thread Group 3. 8,610 13 13 gold badges 104 104 silver badges 233 233 bronze badges. new_throughput – new intensity value, op/min. Using JMeter, the constant throughput timer is particularly useful for this. The Constant Throughput Timer is again a more powerful Timer, not in the same way the previous. So you need to supply the sufficient amount. Boundary value Extractor iv. This timer tries to maintain a constant throughput throughout the test and achieve the target. Inside each thread group I have one parent Transaction Controller and a Constant Throughput Timer, trying to keep the total generated load of the Thread Group at 2 Transactions per second; Underneath the transaction controller, I have 2 child Throughput Controllers: 1 trying to generate 8. Assuming there is only one request (sampler) in your Thread group and you are using the setting "All Active Threads" in. However, I want to make requests as a single user. Alternative options are:JMeter also provides a useful timer component to configure or set a constant throughput value to test the application load. 0 elements: Constant Timer. 1). The value can be changed in various ways: You could set the throughput using a property or variable. （1）Number of Simulated Users to Group by：模拟用户的数量，即指定同时释放的线程数数量，若设置为0，等于设置. In JMeter, the ‘Timer’ element simulates the real user behaviour of taking a pause on a webpage. This timer generates Poisson arrivals with constant throughput. How to create JMeter test with parallel execution in one thread group with specific throughput? 0. To achieve this look at the Constant Throughput Timer. Constant Throughput Timer acts precise enough on minute level so expect your number of requests applied from 2nd minute and onwards. Recording scripts is where you will spend most of your time. Total Http Requests - 24, Total Http Request/min - 12, Test Duration 2min, Waiting time between requests per minute : 60min/12req = 5sec . Below timers are used to implement pacing in Jmeter to achieve the desired load/Business transactions. When you need to add a delay based on an edge condition which is not covered by other timers i. Throughput, essentially, is the. 1. Constant Throughput Timer is only capable of pausing JMeter threads in order to limit the number of requests per second to the given value. JMeter Constant Timer, Constant Throughput Timer. Típicamente, para modificar la carga en una prueba se suele variar la cantidad de UVs (Usuarios Virtuales). The total number of threads in the Ultimate Thread Group will be 250. Other elements, e. Select it and you will see 3 fields as below. During this Test(while loads are held) , I am sending another set of login requests from the different machine (say for 100 users). asked Mar 4, 2021 at 6:07. 5. 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. Synchronizing Timer 同步定时器. Timer in JMeter is easy but crucial part of JMeter where we have to manage the thread user count and time to apply the load to the application. In planning our load tests, our goal is often to measure whether or not our application (not just the. Running Jmeter script by targeting 1000 requests per second (Business SLA) hence used 'Constant Throughput Timer' or 'Throughput shaping timer' as suggested in below queries. If you want to run parallel requests - just increase the number of threads in the Thread Group to reach the desired concurrency. So the formula is: |0. JMeter cannot send requests faster than your application is capable of responding. Constant Throughput Timer is only capable of pausing JMeter threads in order to slow them down to reach the target throughput. Right click on Thread Group > Add > Timer > Constant Throughput Timer. Trong bài này , ta chỉ tập trung vào Constant Timer thôi vì theo mình nó là đơn giản nhất. Also be. 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. Beanshell Server, check out How to Adjust the. g. JMeter Constant Throughput Timer is used as a goal-oriented element which helps to achieve the desired throughput (Total Number of Requests). In addition, these timers are used for simulating the real user think time. 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. Constant Timer. 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. The main idea is increasing the load gradually so you won't kick off all 84 users at once but rather start with 1, after certain time add another one, etc. Gaussian Random Timer. Its called JMeter Throughput Constant Timer. Uniform Random Timer, Constant Throughput Timer, Synchronizing Timer, Beanshell timer,. A JMeter Timer is a built-in plugin tool for JMeter that can help with spacing out your sample requests. The timer will be applied before the sampler is executed. If you want to execute 300 000 queries in 24 hours you need to introduce a rate limiting on JMeter side to execute 208. Although Constant Throughput Timer accepts value in Requests/min and you are saying that you will use 120/sec, so you will have to provide a value of 7200 in Constant Throughput Timer to achieve 120/sec. Add 1. This plugin also works similarly to Constant Throughput Timer, which pauses the threads based on the target Throughput. Such types of goals can be targeted by Throughput Timers. Because JMeter sometimes displays throughput in per minute and sometimes in per second, whereas the hits per second is always per second. Constant timer means the interval between each request is a fixed value. If you get response times comparable to what you see in Fiddler. Follow edited Mar 4, 2021 at 7:35. JMeter provides lots of ways to record the value of throughput. 0. On top of that, it tries to maintain the exact amount of arrivals for a given timeframe ( throughputPeriod ). Make sure that all the Samplers are in the Constant. 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. One widget at a time is passed through a machine that stamps it with a label. JMeter Constant Throughput Timer Example. First of all try increasing the number of threads. If you have 10 virtual users which can be executed at rate of 10 requests per second you will not be able to reach 20 requests per second without. – EBDS. 7 requests per second. Sorted by: 0. 4. JMeter Timers obey JMeter Scoping Rules so if you put the Constant Throughput Timer under a Thread Group - it will be applied only to this thread group. To get request running each 5 seconds set "Target Throughput" to 12 requests per minute (1 request each 5 seconds) So you will have requests firing as per your requirement: For request which needs to be executed once per 5 minutes do the same but set "Target Throughput" to 0. A Constant Throughput Timer will look like the picture above. Here are the workarounds: Calculate the number of threads you need to achieve your. The time is calculated from the start of the first sample to the end of the last sample. Ramp-up is the time for JMeter to kick off the virtual users from point 1. Timers provided in JMeter Constant Timer. e. 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. JMeter threads model assumes waiting for the response prior to sending the next request, if your application won't be able to handle more than 30 requests per second there is no way to get 40 requests per second using HTTP Request samplers. Jmeter: Constant throughput Timer with Ultimate Thread Group. Improve this answer. July 1, 2023 by PerfMatrix. In JMeter, there are 9 different Timer types. added a constant throughput timer to the ultimate thread group and gave the value as 480 requests per minute. Based on RPS you want you can either set the value low for less number of requests and more for more RPS. JMeter Constant Throughput Timer is used as a goal-oriented element which helps to achieve the desired throughput. Unless you're doing spike testing you should be increasing the load gradually as if you release all the users right away you will get much less information and in case of gradual increasing the load you will be able to correlate it with increasing response time and. 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. 2. 3. I have a requirement that in ultimate thread group , constant throughput value needs to be changed for every 5 mins using beanshell pre-processor. 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. Given your setup the only way of having exactly 399600 samplers is using Throughput Controller in. 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. This capability is really helpful for debugging tests in real time. TestElement. Target throughput (in samples per minute) value lets you manage the frequency for your requests. Now let us see in brief about some commonly used timers of Jmeter. e. Poisson. Constant Throughput Timer will be enough for your scenario. Do not include multiple CTT in your test script as it will lead to a hoax. I would say that these timers are mutually exclusive. 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. testelement. Given you have 200 threads and 300 seconds ramp-up time it means that JMeter will start 200 threads in 300 seconds. So it's your job to provide sufficient number of threads in the Thread Group. Doing the math, it should send a request every 5 milliseconds, and being 200 Threads, it should send 200 requests/second (200*5 = 1000ms). JMeter Perfmon. Precise Throughput Timer: siêu phức tạp, mình sẽ tìm hiểu rồi viết sau (hên xui) IV. First of all, Constant Throughput Timer can only pause JMeter threads in order to limit JMeter's throughput to the desired value. Ok, so I have control over the below parameters in Apache JMeter: Number of Threads (users) Ramp-up period (in seconds) How do I test for varying sampling rate and not varying user addition rate? Even a fixed sampling rate would do. If above information is not enough try to elaborate your query and include i. As per documentation: Set Target Throughput = 40. If your application can only serve 1000 requests per minute - you will have 1000 requests per minute no matter how many threads you have in the Thread Group or how many requests per minute you specify in the Constant Throughput Timer. See Also: Serialized Form. g. 5K users or somewhere around it. Constant Timer. Its called JMeter Throughput Constant Timer. A Constant Throughput Timer paces the samplers under its influence so that the total number of samples per unit of time approaches a given constant as much as possible. The following BeanShell commands could be used to change the test:If you need provide constant load at 300 requests per second rate - you'll need Constant Throughput Timer. Ramp up 1 second for all. A JMeter Timer is a built-in plugin tool for JMeter that can help with spacing out your sample requests. If current number of threads is not enough in order to. These timers will pause the threads and try to achieve the specified throughput value. piotr. 3. Throughput Shaping Timer is a plugin and you need to install the plugin. Download. 866 + 172 + 5000 = 22:05:07. The total number of requests JMeter will be able to make will mostly depend on application response time. Dmitri T. And one of them has an obvious title – “Constant Throughput”. This plugin also works similarly to Constant Throughput Timer, which pauses the threads based on the target Throughput. 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. As you see, no other timers except Througput shaping timer. For further detail check JMeter blog about Constant Throughput Timer. Use Throughput Shaping Timer. Uniform Random Timer. Constant Throughput Timer can only pause the threads to the desired throughput so if you want to achieve 10 requests per second with 20 users your application must be at most 500ms, if it will be higher - the number of requests per unit of time will be proportionally less. JMeter now supports. How do you expect the timer to "work" given you have only one thread and one iteration in the Thread Group especially given your test finishes in 500 milliseconds and you configured the test duration as 500 seconds. There are 3 options to configure weighted load and highlight options provided by JMeter. If your script keeps hitting timeouts and includes these elements, remove or disable them unless they are important for your functional test scenario. I ended up using a Test Action with 30s pause. Constant Throughput Timer Value=120/sec is used. This plugin is specially designed to schedule RPS loads. Jmeter Throughput Shaping Timer sending more requests then desired. See Also: Serialized Form. The following article provides an outline for JMeter Throughput. 0 (exclusive) Multiplied by “Random Delay Maximum”. My test config in jmeter. Except for /pdfbill (set to 50%), as we only want 25 concurrent users here instead of 50 users. The Constant Throughput Timer has a setting that lets you share its timer across 'All Active Threads' so that you create a constant load on a server. Component Properties - Properties that contain information about the duration and current state of the test. Follow asked Nov 1, 2022 at 13:41. You can consider switching to Concurrency Thread Group and Throughput Shaping Timer. org; The function of timers is to delay the requests. Despite its name Constant Throughput Timer doesn't have to be "constant", you can define throughput default value using __P(). Sorted by: 2. 10 000 requests in one hour is something like 166. Of course, if the server is not able to handle such a load, the throughput will. JMeter provides lots of ways to record the value of throughput. If your goal is to mimic real users behavior as close as possible -. So you will get 10 threads up and running only by 19th second. It in a way reflects the capacity of the server. testelement. Constant Timer adds "think time" between requests, if you add the timer at the same level as all requests (see JMeter Scoping Rules for more details) - it means that JMeter will "sleep" for 2 seconds before each Sampler in the Timer's scope. 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. Doing the math, it should send a request every 5 milliseconds, and being 200 Threads, it should send 200 requests/second (200*5 = 1000ms). Second, it works precise. Tổng kếtConstant Throughput Timer is the easiest of built-in test elements, 2 requests per second is 120 requests per minute. All you need to do is to slow it down a little bit, one of the options is adding a Constant Throughput Timer. The problem: lets say the first request needs a throughput of 60RPM and the second 30 RPM. Constant Throughput Timer is the easiest of built-in test elements, 2 requests per second is 120 requests per minute. However it is precise enough only on "minute" level so you might need to play with ramp-up period. log is actually included in the bzt. Jmeter variable value update based on time. org. JMeterは一般的にWebシステムに一定のアクセス負荷をかける試験ツールです。 通常機能ではアクセス負荷量の上げ下げが困難ですが、外部ライブラリ(Throughput Shaping Timer)を組み込むことでグラフィカルかつ簡単に実現できたので紹. Follow answered Nov 2, 2022 at 4:51. 4. Like this: Throughput Controller config: Based on is Percent Execution and Throughput is 20. Example 1: you have submitted a request and it returns "pending" status. I use JMeter for web testing. Throughput Shaping Timer. Name: To provide the name of the timer; Comments: To provide arbitrary comments (if any); Number of Simulated Users to Group by: This attribute is used to define the number of threads to release at a time. Constant Throughput Timer will let you control the flow of. Ori Marko. Let's see a brief thought on this: To achieve the target throughput, you need to have. Improve this question. 下面举例来看看如何做到以固定 吞吐量 发送请求，创建一个 JMeter 脚本，加入了若干. Constant Throughput Timer. User variables can be referenced in any field of any JMeter Component. Constant Timer. 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. 2. There are two different ways of pacing the requests: - delay each thread according to when it last ran - delay each thread. In this case, we are using a JMeter plugin – Throughput Shaping timer. Remember 2 things: Throughput Timer isn't able to create threads, it can only slow them down so make sure that you provide enough threads to reach desired target throughput July 1, 2023 by PerfMatrix. If we were to add a Constant Timer to the test and set the delay to be 2000 milliseconds. 1). Constant Throughput Timer added with throughtput = 10 and Calculate Throughput based on = all active threads. You may need to try it out in a few runs to find the optimum value of sleep time to get the desired throughput. In JMeter, the ramp-up period defines the time period within which all the specified users get in running state. 0. Maybe I'm wrong here, but this should be samples per minute, so 200. Click Add –> Timer –> Constant Timer. 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. 4. July 1, 2023 by PerfMatrix. Simply set the wait_time = constant_throughput (0. Throughput Shaping Timer. This ultimate thread group will give you more control over Threads. JMeter provides a variety of Timers and each of them allows introducing delays between requests mainly to simulate real user "think time" 75 requests in 2 minutes is approx 37 requests per minute and if you need to make it 15x times slower you need to execute ~2. It is important to get this peak throughput level correct because otherwise you either end up with a load that is too high (you waste time solving problems that are not problems) or too low (you don't find problems that are real problems) but if you already have. 让线程暂停一个随机时间。由两部分组成： Random Delay Maximum 随机延迟部分; Constant Delay Offset 固定延迟部分; 实例： 1、添加线程组，添加 Uniform Random Timer ，添加HTTP请求，设置固定延迟部分未2000毫秒，随机延迟部分在2000ms。也就是线程延迟在2-4s之间Built-in Constant Throughput Timer; Throughput Shaping Timer from jmeter-plugins. Thread group elements are the beginning points of any test plan. If there are more threads than values, the values get re-used. This blog post answers this questions and helps you build a JMeter test, step by step, to try it out. Uniform Random Timer The uniform random timer causes each thread to wait for a random time. If you want the throughput applied from the very beginning of your test you have the following options: Use longer ramp-up period in Thread Group. thread group (thread = 1000, ramp up = 100 sec, loop count = 1) loop controller( above 3 request with loop count = 12) constant throughput timer = 5. See How to use JMeter's Constant Throughput Timer article for more details. Below you will find a categorized list of the most common timer elements included with JMeter. My load would be held for 3 minutes. 2. Moreover, it's more or less precise only on "minute" level, if your test lasts less - you may not see the impact. Right click Thread Group > Add > Timer > Constant Timer. HTTP Cache Manager must be included in your test plan if you have enabled your HTTP sampler to “Retrieve All Embedded Resources”. Constant Timer: 5000 ms (as configured) End Time of this sample is = 22:05:01. Test Case 1: - 3 requests per minute - 1 request each 20 seconds. 3. Constant Throughput Timer. Constant Throughput Timer Controlando el número de solicitudes por minuto (es decir, la forma de controlar el rendimiento) para controlar si se debe retrasar la pausa. The. 1 Answer. This plugin is specially designed to schedule RPS loads. Each timer has a different application, which we have outlined here: Constant Timer: The most basic timer, this will simply add a delay to the threads before they are initiated. Constant Timer: To delay every user request for the same amount of time use Constant Timer. Introduction. 0” your. Step 2. 5. My purpose is to to use Throughput Shaping Timer via JMeter API in my code programmatically. Let's see a brief thought on this: To achieve the target throughput, you need to have enough. Jmeter: Constant throughput Timer with Ultimate Thread Group. Constant Timer) as a child of the 2nd request. These timers will pause the threads and try to achieve the specified throughput value. 1 Answer. I think the documentation was before Ultimate Thread Group was introduced. So overall 20 users - ramped up in 1 seconds. 目标吞吐量（target throughput)单位是每分钟发送的请求数. Simply set the wait_time = constant_throughput (0. 10 000 requests in one hour is something like 166. 2. For Constant Delay Offset of 3000 ms and Deviation time of 300 ms, each thread of JMeter would execute after {3000+(0-300 ms (could be any value between 0-300 ms)}. First of all, Constant Throughput Timer can only pause JMeter threads in order to limit JMeter's throughput to the desired value. I want to run this test for five or ten minutes. I ran it for 10 mins. Below timers are used to implement pacing in Jmeter to achieve the desired load/Business transactions. In case of scenario 2 you'll need Constant Throughput Timer. 7. The thread delay is a constant in milliseconds: Uniform Random Timer: One step above the basic. รวมถึง. Throughput Controller - You can set the Max number of executions, OR the Percentage of executions of the sample (i. JMeter Constant Throughput Timer Example. Here are the workarounds: Calculate the number of threads you need to achieve your. X * Random Delay Maximum + Constant Delay Offset| where X an be the. However it is precise enough only on "minute" level so you might need to play with ramp-up period. If you want to limit JMeter's throughput to 1100 requests per minute consider using Constant. I am using a Constant Throughput Timer with "Calculate throughput based on: all active threads in current thread group" selected. e. Nested Class Summary. 在JMeter中定时器用来设置延时和同步，以调节请求的发送速率，那么如何产生固定吞吐量的压力哪？可以使用常数吞吐量定时器(Constant Throughput Timer)来实现。 下面举例来看看如何做到以固定吞吐量发送请求，创建…Tool ที่เราใช้ในการทำ performance test ก็คือ JMeter ซึ่งเป็น tool opensource ที่เขียนด้วย Java. 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. If you set its value as “1. 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. 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. The following is the list of JMeter 4. To add a timer element, we need to right-click on the Thread Group element and select Add, Timer, Constant Timer. Gaussian Random Timer. The name that we have given is displayed on the tree and here. Use Cases. {"payload":{"allShortcutsEnabled":false,"fileTree":{"src/components/src/main/java/org/apache/jmeter/timers":{"items":[{"name":"gui","path":"src/components/src/main. I want to use the Throughput Shaping Timer using JMeter API in my java code. Constant Throughput Timer: acts precise enough on "minute" scale, if your test lasts less than minute it might not apply the throughput. I am searching how to increase the number of sent requests per second . 0. 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。. It's easier to configure as it provides a graph demonstrating. The formula is: Throughput = (number of requests) / (total time). You can specify the pause in ‘Thread Delay’ field. In both the cases structure of the test will be like the following:Be aware that Constant Throughput Timer is accurate enough on minute level so it can start pausing the threads only after 1 minute. If for some reason you need to proceed with JMeter take a look at Constant Throughput Timer which can limit requests execution rate to the desired value. Ori Marko Ori Marko. The Apache JMeter site actually puts the workings of the ramp-up period best:. Share. Constant Throughput Timer: This timer. As a practical example, assume you have a long-running JMeter test running in CLI mode, and you want to vary the throughput at various times during the test. Hot Network QuestionsThe formula is: Throughput = (number of requests) / (total time). Constant Throughput Timer; Throughput Shaping Timer; Precise Throughput Timer; Random number of messages in the request body payload: in both tools you will have to write some code for this, in LoadRunner you basically have to write the code for everything, in JMeter you can add JSR223 PreProcessor and use Groovy. 8、吞吐量定时器（constant throughput timer）需要补充注意事项，有不理解的地方. This way, You can use constant throughput timer in your load test plan to. For example, if I set Constant Throughput timer throughput to be 60 per minute,. timer. You can add this element to your test plan by following “ Thread Group -> (right click) -> Add -> Timer -> Constant Throughput Timer ” path. Add two entries to the "User Defined Variables. I am having 5 request inside that. 2. 作用：让jmeter以指定数字的吞吐量进行压测. thread numbers, target throughput and what kind of information needs. We highly recommend using the Uniform Random Timer. Remember 2 things: Constant Throughput Timer is precise enough on minute level, make sure your test lasts long enough so it could be. Constant Throughput Timer with a target throughput of 12000. If you're using > 1 virtual user and uncertain regarding ramp-up settings consider using Throughput Shaping Timer which is more precise out of the box. Use 0 for truly random delays and a positive integer for constant. A constant throughput timer in JMeter is used to achieve the actual output by computing the total number of requests. With 100 threads you will get 50 requests per second. If our server is not able. Since: 4. e. However, in one case I need an additional constant timer because I need to wait a certain time between two requests. I'm thinking that in my overall Test Plan, I will add all the a). I ended up using constant_throughput to control the number of requests per second.