Search everywhere only in this topic. Advanced Search. Classic List Threaded. How to increase throughput? This post has NOT been accepted by the mailing list yet. In our test plan, there were threads and loop forever. During we ran the test script, load on our machine was low and still had lots of free memory 30G.
I was confused because the throughput was less than we expected at least I was wondering if JMeter had any limitation of thread number or request number? Can I adjust any parameter to increase throughput? Re: How to increase throughput? If so you should consider distributed testing It sounds like you have discovered a 'bottleneck' in your system Felix Frank What about the load on the Jmeter machine?
What about memory, and how much heap is granted to Java? If your system under test responds faster than once per second on average, you don't actually need threads to perform requests per second.
In reply to this post by ZK. The issue is not related to JMeter though it depends on what plugins you're also using, how you're using jmeter. If you made sure JMeter has enough memory, your test doesn't overwhelm the test machine, than you can rule it out. You also have to check for any exceptions reported. The throughput is affected by response times: if the avg. I agree with Felix about the timer policy.
And you have to start monitoring your application under test to see what is going on. In reply to this post by Felix Frank Our testing machine spec. During testing, the loading of our machine is very low. I want to know is there any parameter to configure or is it the limit of JMeter?
In reply to this post by AdrianS. Jmeter has no inherent limit. You are limited by the capabilities of both the Jmeter machine which you claim aren't maxed out, but I'm not entirely convinced and the system under test.
I want to control my throughput per minute via the "Constant Throughput Timer" timer, however, it only applies to the HTTP requests, and not the transactions controllers. Let me explain a bit further, I want to simulate an user experience where the user performs X clicks every minute. However, each "click" can gather different "resources". I want to manage throughput per minute for each transaction controller, but I can't manage to do it.
Can it be done? If yes can someone help me with it? I also tried using jp gc Throughput Shaping Timer without success. Actually, Constant Throughput Timer can only pause the threads to reach specified "Target Throughput" value so make sure you provide enough virtual users threads to generate desired "requests per minute" value. To see your desired throughput, you can use Transactions per Second Listener. You could design this scenario using a "Recorder".
First, you need to record your script and you have to add "HTTP Cookie Manager" in your script manually after recording is done. Enable "Clear Cache Each Iteration". This will render your page resource every time it sends a request and clear the cache before a new incoming request. And to manage throughput per minute you could use "Constant Throughput Timer".
Do not include multiple CTT in your test script as it will lead to a hoax. Sign up to join this community. The best answers are voted up and rise to the top. Jmeter - throughtput per minute for a transaction controller Ask Question. Asked 4 years, 3 months ago. Active 3 years, 5 months ago. Viewed 3k times. I'm new to JMeter and I'm having some trouble with it. Thanks, and sorry for my bad English. Browsers typically cache those kinds of things, so even if your web page uses other resources, the browser does not necessary need to re-download them every time.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Attached is the Summary Report for my tests. Please help me understand how is the throughput value calculated by JMeter: example the throughput of the very first line Also, wanted to know how are the throughput values in the subsequent test divided into mins or secs.
Tried many websites on the net and have got a common reply that the throughput is the number of requests per unit of time seconds, minutes, hours that are sent to your server during the test. But that didn't apply to the results I see in my graph the way it was explained straight forward. Documentation defines Throughput as. The time is calculated from the start of the first sample to the end of the last sample.
This includes any intervals between samples, as it is supposed to represent the load on the server. For 1 request total time or elapsed time is the same as the time of this single operation.
For requests executed multiple times, it would be equal to. For instance if you take the last line in your screenshot with 21 requestsit has an average ofso throughput is:. This is why some values are displayed in sec, some in min, and some could be in hours.
Some may even have value 0.JMeter Beginner Tutorial 2 - How to create first Jmeter Test
Learn more. Throughput calculation in Jmeter Ask Question. Asked 3 years, 10 months ago. Active 10 months ago. Viewed 21k times. Adnan 2, 3 3 gold badges 19 19 silver badges 31 31 bronze badges. Automation Engr Automation Engr 1 1 gold badge 3 3 silver badges 15 15 bronze badges.
Please refer the attached summary report for detail. Active Oldest Votes. Kiril S. How will it be changed for several threads? Sep 1 '17 at How can throughput be calculated from the output of the jtl csv file? Create a new question instead and someone will answer. Oct 27 '19 at Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
The Overflow Blog. Podcast a conversation on diversity and representation.Looking for a performance testing specialist? Timers are one of the simplest, yet most powerful tools in the arsenal of any JMeter user.
There are many types of timers available to meet the various scenarios you may be trying to simulate with JMeter. In this tutorial, we will cover the main types of timers that are available on the market, and provide examples of when and how to use these timers to improve your testing.
JMeter - Constant Throughput Timer Example
Topics covered here:. A JMeter Timer is a built in plug in tool for JMeter that can help with spacing out your samplers requests. By default, each request in JMeter is made immediately after the another if there isn't a Timer set.
With a JMeter timer, users can use a static or random time to separate requests. Timers will be useful in most of the JMeter scripts that you build, especially those that simulate real user activity. Testing without a JMeter timer can provide inaccurate test results, because the simulated requests will come in a different pattern than what is seen in a real world situation.
For example you may be interested in ensuring every single user can execute a specific number of requests per second so that you can hit a target minute, hourly or daily transaction count. In this case - we might want to test an API with requests per second by using users. This will achieve the requests per second target as long as the response time is less than ms if the response time is higher than ms we won't achieve that scope.
Essentially, the JSR timer will run whatever code you script in that language:. Poisson Random Timer: The Poisson Random time is similar to the Gaussian random timer, but this time distributes users in accordance with the Poisson distribution :. Essentially, it will wait until a certain number of threads have accumulated, and then group and release all of those threads at once:.
Bean shell Timer: The Bean shell Timer is similar to the JSR timer, however, is only supports scripts written in bean shell as a customer timer:.
To help you understand how to use a JMeter Timer, we have created a repository with an example script including a basic timer. In this example we have added a Gaussian random timer that will be added before kicking off any recorded thread group. This is quite a basic example, there are much more complex ways to implement a JMeter Timer.
Like any other element in a test plan, a JMeter Timer has a scope which will determine which samplers are impacted by the timer. Make sure that if a timer is meant to only be applied to a single sampler, that it is added as a child element of the sampler as shown, to restrict the scope to only that sampler:. It is also worth noting that Timers will always be executed before any sampler that is in scope.
Additionally, multiple timers will be run consecutively meaning all of the timers in scope will be executed before the sampler. JMeter Timers are something that every load testing expert uses to create a realistic simulation of their scenario. Knowing which timer to use and how to apply it will help you on the path to creating awesome load tests.
For more information on getting started with JMeter, make sure to check out our getting started guide for JMeter. It only takes 30 seconds to create an account, and get access to our free-tier to begin load testing without any risk.
Blog Support Guides Sign In. Featured Products Element. Get Started.Search everywhere only in this topic. Advanced Search. Classic List Threaded. How throughput is calculated in jmeter? Login requests under once only controller 2. Sendreceive requests 3. More requests 4. Image requests 5. Next requests 6. Previous requests the above test plan is executed with, Number of threads-1 Ramp-up-0 sec loops-5 and test ran time is milliseconds I got the following aggregate report, Summary report why the throughput in aggregate report and summary report differs?
Would you explain in detail the throughput calculation for each requests with formula Re: How throughput is calculated in jmeter? Or the code failed to divide by the appropriate factor. As yo said Login requests seems to be fine But for the next requests, ex. Plz explain me in detail I've found the problem - the statistics calculator used by the Aggregate Report was mistakenly adding the elapsed time to the end time; this had the effect of increasing the calculated elapsed time, and therefore reducing the throughput.
The fix will be in the next release of JMeter. The Summary Report has the correct calculation; it also uses fewer resources as it does not need to save all the samples. It was more obvious in this case because there were few samples - e. Thanks for reporting the problem. Use the Summary Report instead. OK I go with yo Plz explain in detail about the calculations here As yo said Login requests with 1 sample seems to be fine But for other requests, ex.
For a single request, the throughput depends only on the time to issue a single request.
Ideal throughput in jmeter
For multiple requests, the throughput depends also on the gaps between the requests. Modha Khammammettu. RE: How throughput is calculated in jmeter?Note: In an ideal scenario, if metrics are directly proportional then graph lines should follow each other. JMeter is the tool we chose when we started our tests, but we quickly started searching for alternatives. Follow Apache JMeter on TwitterThe throughput: is the number of requests per unit of time seconds, This is the right answer in an ideal world where information systems behave in a deterministic manner JMeter records response times and throughput for each "sampler" of each "thread group" defined in your test plan.
In the case you mention where the JMeter threads are running at maximum possible throughput, this should be clear from looking at the gaps between requests. Practically you can see an upward move of response time along with increase in user count.
Read my previous blog to get more information on latency, network bandwidth and throughput. Many of these functions can be reused in While conditions. The Transaction Controller is one of the widely used controller in JMeter scripts. Even if your API servers are fronted by a load bAs every developer knows, what works in the ideal scenario a.
Of course, if the server is not able to handle such a load, the throughput will be lower. While the JMeter application itself is designed as pure Java application, it can be used to perform load testing of any kind of web application, including those that are written in PHP.
If we need to Considering other case, if response time is getting increase and throughput is constant at a level, then possible cause may be network bandwidth issue. Deviation:- Jmeter does not measure Standard deviation instead it gives Standard Population Deviation. Identify performance test scenarios that take into account user variability, test data, and target metrics. Else the opposite trend should be followed when metrics are inversely proportional.
See the complete profile on LinkedIn and discover Jatin Kumar's connections and jobs at similar companies. In JMeter, you can control this by adding the following line to your user. Additionally, identify project success criteria that may not be captured by those goals and constraints; for example, using performance tests to evaluate which combination of configuration settings will result in the most Toronto.
Technically speaking, it is an application written in Java, meaning it can run on any machine, Windows, Linux or Mac. For every application there are lots of users performing lots of different requests. It's a simple application of Little's law in Performance Testing. WhatsApp Groups. Else the opposite trend should be followed in case metrics are inversely proportional. The reason is that even though JMeter is probably the best tool if your goal is to stress test complex user flows on a web application, it can be an overkill when you just need to run a performance test on an a few HTTP API endpoints.
As far as I know, it doesn't matter which type of Thread group you are using with Constant Throughput timer, at the end of the test in the results, you will get your desired Throughput which you mentioned in Constant Throughput Timer i.
When I first tried to use JMeter, I feel that it involves a learning curve. Pls clarify. Indeed, and knowing how to interpret the results.
We will go through below topics - Who is the Scrum Development Team? Toronto, Ontario, M5X 1C9.Comment 2. In this example, we will demonstrate the concept of throughput as a performance indicator in test execution with JMeter. Apache JMeter is an open-source Java-based tool that enables you to perform functional, load, performance and regression tests on an application. The application may be running on a Web server or it could be standalone in nature. It supports testing on both client-server and web model containing static and dynamic resources.
Throughput is one component of non functional requirement which falls under performance category and is measured as total no. It in a way reflects the capacity of the server. The ability of the server in terms of how much load it can take. It is one of the significant indicator that helps in evaluating the performance of application. Maximum throughput is often desirable, though the performance of the system itself cannot be based only on higher throughput.
There are certain other indicators like response time, latency etc also needs to be considered when testing the application performance. From the networking perspective, throughput can also mean no. For a typical Web application, throughput is measured as number of requests sent to web server per second. We measure throughput by observing the test results.
Test results are observed through listener components. The following listener components will allow you to measure or track throughput value:.
JMeter also provides a useful timer component to configure or set a constant throughput value to test the application load.
We will now demonstrate the usage of throughput in the load testing. We will conduct a sample load test with concurrent users threads and evaluate the throughput value.
We will perform the load test on the JCG home page www. At the time of writing this article, the current release of JMeter is 2. To install, simply unzip the archive into your home directory where you want JMeter to be installed.
For Windows, you can run using the command window.