K6 requests per second If you want to express the test in terms of requests per second, or rather, iterations per second, you should use one of the arrival-rate executors. May 6, 2021 · We also see the number of requests that were performed, in how much time, and the total volume of data that was read (5). Whether it’s load . Options Besides the common configuration options, this executor has the following options: Jul 10, 2024 · Load Testing with k6 When developing a web application, ensuring it can handle anticipated traffic is crucial. Helps identify performance bottlenecks in a realistic manner. i want to send 100 requests to the first end point for a duration of 60 seconds. Examples illustrate ramping VUs, constant arrival rates, and per VU iterations to optimize performance testing. How should I configure my scenario? export let options = { … Learn how to run scalable performance tests with Grafana/K6 and Signadot, isolating workloads and optimizing tests for microservice scalability at scale. In my test I’m tagging the request with the hostname so I can query on it. I want to test if my website can handle 3000 requests per second for a full minute. Per VU iterations With the per-vu-iterations executor, each VU executes an exact number of iterations. Advanced Examples using the k6 Scenario API - Using multiple scenarios, different environment variables and tags per scenario. Testing a Get Endpoint with k6 Now it’s time to repeat the previous test, this time using k6. Load testing, which involves simulating expected traffic, allows you to observe how Jan 13, 2023 · I’m trying to make use of the K6 dashboard that is available as template but when I’m using this query for representation of the Requests per Second: from (bucket: "<bucket_name>") |> range (start: v. The tools highlighted in this article will help you effectively perform load testing and HTTP benchmarking on your web application. Read on to learn about how to get the most load from a single machine. k6 will use the virtual users required up to maxVUs. Using Grafana K6, we can determine the maximum number of requests per second (RPS) our server can handle before performance degradation occurs. Has anyone been successful and writing such query for a metric in Grafana? Nov 10, 2019 · From documentation of k6: "option rps: The maximum number of requests to make per second, in total across all VUs", — but actually rps limit is ignored. Feb 20, 2023 · I have to two end points. 88 ms Aug 11, 2022 · The amount of requests depends entirely on the contents of that function and on the server response times. Finally, we see the total amount of requests per second and the volume of data transferred. Oct 11, 2023 · Are you ready to take your performance-testing game to the next level? K6, an open-source load testing tool, is here to help you ensure that your web applications and services can handle the Oct 10, 2024 · See pictures. 3 kB/s) Requests Total requests: 112 Request rate: 3. It’s great! In my tests I’m sending traffic to two different hosts and I want to show the requests per second going to each and the total. May 19, 2025 · Row 1: Contains the Virtual Users and Requests Per Second widgets, showing the test's scale and throughput Row 2: Contains the Response Times, Iterations, and Data Transfer widgets, providing detailed performance metrics Additionally, the number 1. Apr 1, 2025 · Throughput (requests/sec): The number of requests the system can process per second. Jul 30, 2021 · In this article, I’ve explained how k6 can achieve a constant request rate by using the new scenarios API with the constant-arrival-rate executor. Unless you need more than 100,000-300,000 requests per second (6-12M requests per minute), a single instance of k6 is likely sufficient for your needs. Feb 18, 2025 · Load testing is essential for ensuring the reliability and scalability of an HTTP API server. In particular, we can see how long the request took with http_req_duration and how many requests per second it managed http_reqs. And I want to know why. More accurately reflects real-world traffic patterns. Reasons for conducting such tests include: Identifying and addressing system bottlenecks to increase Jan 27, 2021 · Learn about the strengths and weaknesses of JMeter and of k6, as well as what to consider when choosing a load testing tool and which tool is better for different situations. Mar 19, 2025 · To run it, just have K6 installed on your machine and run the command k6 run script. For example, you can run a test with 100 VUs and a fixed rate of 200 requests per Feb 16, 2025 · The blog discusses key aspects of load testing with K6, focusing on Virtual Users (VUs) and test duration. For testing pur Jul 31, 2024 · Hi there, I’m hoping to be able to record, as live output, the number of iterations started per second by k6. So the logic is: We create 10 VUs and this 10 VUs starting to make 1334 rq in sum (each create 2 rq/sec) through the test. The total number of completed iterations equals vus * iterations. Script Breakdown Imports and Setup: The script imports the http module for making HTTP requests and the check function for validating responses. This can be useful for running tests with a fixed request rate. To make this more useful we are going to add in some options. My objective in an ideal world is to ramp up to 30,000 requests per second over 1 minute and then hold 30,000 requests per second for an hour. It doesn’t matter if i have 1 connection or 1000 i still cant get the requests per second up. Mar 28, 2024 · I wrote the following options with K6 scenarios for my performance testing in hoping to achieve traffics with different request per second while keeping the virtual users - VUs constant at 100. This GitHub issue comment indicates that the iteration counter metric is emitted at the end of the corresponding iteration, meaning it cannot serve as a reliable indicator of the actual request rate (instead it acts as a response rate). Sep 17, 2024 · This k6 script is designed for load testing an application by simulating multiple virtual users (VUs) that perform a series of HTTP requests. In some tools, this is described as "test throughput". Oct 14, 2024 · See pictures. Mar 26, 2024 · I’m trying to understand how VUs work when using constant-arrival-rate. Web Server performance testing and benchmarking are essential to understand the load capacity of a web app. Testkube's flexibility and scalability make it a perfect tool for running load tests at scale. timeRangeStart, sto… Mar 17, 2025 · Learn k6 framework load testing, from setup to execution, and analyze performance metrics to ensure application scalability and reliability. Breakpoint testing helps identify system limits. It covers configuration methods, including basic options, command line specifications, and scenarios for dynamic user load. Setting Up Load Testing with K6 K6 is an excellent tool for implementing Average Load Testing. 51 requests per second Request Times Average request time: 43. To configure workloads according to a target request rate, use the constant arrival rate executor. In Grafana I setup two queries: one to show the total RPS throughput and one to show by host. Jul 13, 2020 · Dear K6 experts, For gatling (or other load test tool as well), It support send requests at constant throughput. The Jan 30, 2024 · When analyzing API endpoint performance, the load is generally reported by request rate—either requests per second or per minute. 525116/s is the number of requests per second (rps) that the test executed throughout the test. RPS: The average requests per second (RPS) rate the test was able to achieve. Results All checks passed: 100% (168 of 168 checks) Virtual Users (VUs): 2 Test Duration: 30 seconds Transferred Data Received: 24 MB (759 kB/s) Sent: 41 kB (1. It also Sep 19, 2022 · 0 trying to run k6 performance test cases by using the following scenario's how to hit x amount of API per min for example: Produce 500 messages per minute → Check how API behaves It should be same, next time we run the test case. How and what kind of metrics k6 collects automatically (_built-in_ metrics), and what custom metrics you can make k6 collect. I found several topic about that but still I'm confused how this works. 78 ms Minimum time: 9. Aug 10, 2020 · With the release of k6 v0. May 10, 2017 · Well, in fact we want that not only one user make 1334 requests per second, but 667 users do this number of requests per second. That is, you want the endpoint to receive 6000 requests per second. I don't want to ramp up or try to maximize throughput, just fire the requests. js. Dec 16, 2024 · Conclusions As demonstrated in the examples above, using Testkube and its parallel feature to run k6 tests made exceeding even 100k RPS almost effortless. This is within the context of the use of a Dec 31, 2024 · Backend CPU Usage GitHub Repository All resources used in this blog, including Kubernetes manifests, the k6 load testing script, Python plotting script, and Prometheus/Grafana setup files, are available in my GitHub repository: GitHub Repository: Kubernetes Load Testing and Monitoring Feel free to explore the repository to replicate the steps or modify the scripts for your use case. In this article, we explain how to use this feature to generate a constant request rate. It includes setup for authentication, payload generation, and defines different testing scenarios. Checks: The percentage pass rate of the checks configured in the k6 test. Feb 23, 2025 · Using REQ_AVG_DURATION and REQ_MAX_DURATION: analyzing these two metrics allows us to assess both the typical performance and the stability of response times. Here are some links to get you started: Open and closed models Constant arrival rate Nov 10, 2022 · I'm struggling to understand how to create simple Graphana dashboard that will calculate requests per second. It helps you assess how well your system handles high traffic. This executor simplifies the code and provides the means to achieve fixed RPS. Dec 10, 2021 · In this example, we will maintain a constant intensity of 200 requests per second for 1 minute, which will allow k6 to dynamically schedule up to 100 VUs: import http from ‘k6/http’; Apr 11, 2023 · This will limit the number of requests per second that k6 can make, regardless of the system capacity or feedback. e: Allows to reason in terms of request per second and not in… Jul 25, 2019 · I’ve started with the default sample Grafana dashboard offered by k6. Nov 7, 2022 · I see that k6 outputs requests per second in the console under the http_reqs metric, but I don’t seem to be able to fetch that number in the database. 27. Mar 1, 2025 · Instead of sending a fixed number of requests per second, this approach Generates requests based on the average concurrency over time. TTFB P90: The 90th percentile of how long it took to start receiving responses, aka the Time to First Byte (TTFB). After 30 seconds I want to hit the second endpoint with 150 requests for 30 seconds. Jan 16, 2025 · let rateLimiter = rate(50); // Limit to 50 requests per second Handle Rate-Limiting Responses: Detect HTTP 429 responses in K6, back off, and retry with a delay, considering connection time to handle rate-limited responses gracefully. Feb 14, 2025 · The k6 run --rps=1000 command can be used to specify the number of requests per second that K6 should send during the test. Installing Jun 7, 2021 · I've played around with iterations and virtual users but they seem to require a duration being set when I don't want to set a duration just execute X number of requests per user. Dec 3, 2020 · The rps option throttles how many requests per second are sent. A large gap between these metrics can indicate sporadic spikes or outliers, suggesting potential instability under certain conditions. Its tool-agnostic, and highly configurable design allows seamless integration with k6 and a wide range of other testing tools. This section covers the important aspect of metrics management in k6. 0, a new scenario API has been introduced. TTFB P95: The 95th percentile for TTFB. May 20, 2023 · As per the calculations, if you need 600 “users” x 10 requests per second, you would have to define a rate of 6000, with the timeUnit of 1s. The problem that this is causing is that my manual calculations are going up even though the HTTP_REQ_DURATION is roughly the same. Will we have the similar feature as well? i. ujunoe tj gk4tvxz n7fy2 emj0j hmonk rv0fta jpjsf qr2fg nesh