In some cases, this number of VUs can generate up to 300,000 HTTP requests per second (RPS). g. Duration: -d or --duration to set the test duration. Jul 10, 2024 · $ k6 run --vus 10 --duration 30s my_test. VUs max (vus_max) là số lượng VU tối đa. After the test finishes, k6 prints the full details and summary statistics of the test metrics. In the load test script, our target is a maximum of 4 concurrent users within a period of 1m 30 seconds . This document shows you how to configure this integration. In this particular test, we are telling k6 that we want to run the test with only a single virtual user (vus) or a single iteration, which makes sense for the context of this test. Let’s use our first example, but this time, we’re going to test it with 10 VUs with a duration of five seconds instead. In this case, the test met the criteria for both thresholds. Apr 19, 2022 · You have configured k6 to run with 2 vus for 2 minutes --vus 2 --duration 2m. ramping-arrival-rate ramps the iteration rate according to your configured stages. Modules Be sure to search the k6-operator category in the community forum. For this test, this ended up as 17 VUs. constant-arrival-rate starts iterations at a constant rate. The following example schedules 10 VUs to execute 20 iterations each. On this page Read about… How to use options How to set options in different places (with examples), how to override options, and how to access the value of an option as the test runs. Vus; Iteration; Duration; As you have written the script, which mention above to hit a particular API with 100 vus, In the given time, Which we call duration and it should be completed 20 iterations. As previously mentioned, you can run K6 on the command line so we can put it in a CI/CD pipeline with ease. Graceful stop. Examples Get started with k6 Single request HTTP Authentication OAuth Authentication Correlation and Dynamic Data Data Parameterization Parse HTML HTML Forms Cookies Example Data Uploads API CRUD Operations Generating UUIDs HTTP2 WebSockets SOAP Transport Layer Security (TLS) Generating realistic data Crawl a web page Bundling and transpilation Functional testing Track transmitted data per URL Mar 30, 2024 · Achieving a specific RPS in K6 scenarios can be done by adjusting the number of VUs and the time between requests using the sleep function. Get your metrics into Prometheus quickly Dec 19, 2017 · You use the RPS limiter feature by adding the rps parameter, either on the command line as an option to the run command: k6 run --rps 100 or as options. Prometheus exporters. Using the InfluxDB extension, you can store k6 metrics in InfluxDB v2. Saved searches Use saved searches to filter your results more quickly Dec 25, 2023 · Output example of executing a k6 test - data_received: The total amount of data received from the target server during the test. The end-of-test summary shows aggregated statistical values for your result metrics, including: May 10, 2023 · 用K6 搭配Swagger 自動產的json 打出一記漂亮的punchline： 如果專案原先已經有用swagger 產生文件，那要用K6 撰寫各種測試時，就不用從頭寫script， 透過 gRPC is a lightweight open-source RPC framework. This flag just provides variables to the script, which the script can use or ignore. The test load configures the traffic generated by the test. a. No k6, "Options" (Opções) são configurações que permitem controlar diversos aspectos de um teste de carga, como o número de Usuários Virtuais (VUs), a duração do teste, os limiares (thresholds) e muitos outros parâmetros. Read also the complete tutorial to learn more about how to use this project. 0, k6 included core. Jun 17, 2021 · I am working on a script to test my infra using k6. The gracefulStop option is available for all executors except externally-controlled. VUs là virtual users – một How and what kind of metrics k6 collects automatically (_built-in_ metrics), and what custom metrics you can make k6 collect. It is an open-model executor, meaning iterations start independently of system response (for details, read Open and Closed models). connect(). This lets us set up the k6 configuration cleanly and concisely. K6 Documentation; K6 HTTP API; K6 Sleep API Jul 18, 2022 · はじめに. k6 คือเครื่องมือที่ช่วยให้เราสามารถทำ load testing ได้อย่างสนุกสนาน โดยสิ่งที่น่าสนใจของมันก็คือเราสามารถเขียน script ด้วย JavaScript ES2015/ES6 แถมยังใช้ local/remote modules The k6 extension ecosystem enables developers and testers to extend k6 to cover use cases not supported natively in the core. k6 Cloud The proper name for the entire cloud product, comprising both k6 Cloud Execution and k6 Cloud Test Results. Engineering teams, including Developers, QA Engineers, SDETs, and SREs, commonly use k6 for: Scripting examples on how to parameterize data in a test script. In arrival-rate executors, as long as k6 has VUs available, it starts iterations according to your target rate. Run local tests . To configure the workload, use test options. abortOnFail: boolean: Whether to abort the test if the threshold is evaluated to false before the test has completed. A single k6 process efficiently uses all CPU cores on a load generator machine. Jul 5, 2024 · k6 Operator. A scenario in K6 represents a specific user journey or flow during a load test. . Along with startTime, duration, and maxDuration, note the different test logic for each scenario. ramping-vus ramps the number of VUs according to your configured stages. For a shortcut to this executor, use the VUs and duration options. With these example snippets, you’ll run the test with your machine’s resources. Options reference Every option, with k6 run --help--vus or -u: Sets number of virtual users: k6 run test. k6 has an output extension to store k6 metrics in InfluxDB v2. Write Your Performance Test Script: Scripts must contain, at the very least, a default function — this defines the entry point for your VUs, similar to the main() function in many other languages. This was a good warm up. The parameters we will determine are defined in the Options Lúc này, options 20 VUs ở bên ngoài đã override lại 10 VUs ở bên trong, test sẽ thực thi theo options: 20 VUs + duration 30s. Now your script has logic to simulate user behavior, and assertions for functionality (checks) and performance (thresholds). Lalu akan muncul hasil seperti ini pada terminal anda. Increase the test duration. Jun 7, 2021 · Is there a way to execute X number of requests? 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 Oct 11, 2023 · Constant VUs “constant-vus executor”を使用すると、指定された時間に対して、固定数のVUsができるだけ多くのイテレーションを実行します。 このエグゼキュータの簡略化バージョンとして、vusオプションとdurationオプションを使用できます。 options Aug 10, 2023 · k6 options configurations — using this option, you can define, for example, for how long will the test run or with how many VUs: K6_DURATION=20s K6_VUS=5 k6 run path_to_your_file. js VIII. js. k6 Cloud docs k6 options Different k6 executors have different ways of scheduling VUs. Jun 23, 2022 · One of the questions we often get in the forum is how to run distributed Grafana k6 tests on your own infrastructure. rps: export let options = { vus: 50, rps: 100 } Note that this feature is just limiting the max RPS rate k6 will produce. Load testing is a critical aspect of performance testing, where you test an application’s ability to handle expected user traffic. scenarios you want, automatically calculating the VUs of each scenario based on the percentage of total VUs you want to have for the whole test. Depending on the available resources, and with the guidelines described in this document, a single instance of k6 can run 30,000-40,000 simultaneous users (VUs). duration: '30s', // The following section contains configuration options for execution of this // test script in Grafana Cloud. js for 50 VUs. This option is only possible if the server has been instrumented with reflection support. Jan 8, 2023 · This post explains how to get started with k6 browser, a k6 experimental module that adds browser-level APIs to interact with browsers and collect web performance metrics as part of your Grafana k6 tests. Be sure to search the k6-operator category in the community forum. running (0m30. k6 considers this test a pass and exits with an exit code 0. Let's change the vus to simulate 10 users by updating the options section of our test script: Aug 17, 2022 · Task 1: Override options. This means that you are running the constant-vus executor, the options you provided are just a shortcut for it. k6 will help you to build resilient and performant applications that scale. Graceful stop Jan 30, 2024 · If k6 doesn’t support a protocol you need, you can use (or create) extensions. Community resources. js Options Options configure test-run behavior. Parameterization is typically necessary when Virtual Users(VUs) will make a POST, PUT, or PATCH request in a test. k6 offers various command-line options to customize your test runs. The parameters we use during performance testing and define for it to work are also encountered here. __ITER: A numeric counter with the current iteration number for a specific VU. This added around 2MB extra memory usage per VU and some of the transformations (generators, async/await) of Babel were still insufficient to get k6 working with these features. js, which does set iterations. To run a simple local script: Copy the following code, paste it into your favorite editor, and save it as script. O k6 era conhecido anteriormente como Impacto de carga e é uma ferramenta completa para: Vamos prosseguir para a próxima seção para configuração e instalação. See also Apr 17, 2024 · Ramping VUs Configuration Options. Build the k6 version. The browser module is not available within k6 cloud as of yet. js Copy As the preceding example shows, you need to prefix K6_ in the environment variable name for k6 to evaluate it as an option parameter. Dashboard templates. In other words, before the tests runs, you must both: Configure load (as new iterations per unit of time) Ensure that you've allocated enough VUs. 一定期間、緩やかなアクセスを繰り返した場合に、サーバの負荷がどのように変化するのか知りたくなり、調べたところk6がよさそうだったので、試してみました。 Jul 30, 2023 · k6 support output format json กับ csv. The number of VUs to achieve the desired rate varies depending on how long each iteration takes to execute. js: Note that providing an executor and setting the browser scenario option's type to chromium is mandatory. Having started with 2 VUs (as specified by the preAllocatedVUs option), k6 automatically adjusts the number of VUs to achieve the desired rate, up to the maxVUs. io'); sleep (1);} 実行 上記で作成したサンプルの場合は 30 秒テストを実行する設定になっているので、テストの実行は 30 秒ほどかかり A single k6 process efficiently uses all CPU cores on a load generator machine. js --duration 10m--iterations or -i: Instructs k6 to iterate the default function a number of times: k6 run test. While we believe that running large load tests is possible even when running on a single node, we recognize that this type of load testing is something some of our users might want to do. import { check } from "k6"; import { randomIntBetween, randomItem } from "https://jslib. 29. If vus are specified with a non-zero value, the executor will run similarly to the Constant VUs until acted upon by an external actor. It doesn't start new iterations during the gracefulStop period. This will, in turn, make your test more realistic. Along with the generic scenario options, each executor object has additional options specific to its workload. Lifecycle of a k6 test Running k6. With the ramping-arrival-rate executor, k6 starts iterations at a variable rate. Jun 14, 2022 · setting options One of the advantages of using options with K6 is that we can define some settings using stage 2 of the lifecycle. tar" runner: env: - name: TEST_VUS value: "4" The and symbols indicate whether the performance thresholds passed or failed. In distributed/cloud test runs, the test-wide iteration numbers and VU identifiers are still going to be unique across instances, though there might be gaps in the sequences when, for example, some instances execute faster iterations than others or allocate more VUs Having started with 2 VUs (as specified by the preAllocatedVUs option), k6 automatically adjusts the number of VUs to achieve the desired rate, up to the allocated number. k6 run –address 1. To build a k6 binary with the extension, first, ensure you have installed Go and Git; the following steps are: Jun 7, 2023 · k6 run load_api. Here are some commonly used options: Virtual Users (VUs): -u or --vus to specify the number of VUs. Jan 17, 2023 · k6 は、VUS（Virtual UserS）と呼ばれる無限ループが独立して iteration （繰り返し）を行います。 今回の試験対象のWebアプリケーションでは、一度ログインしたユーザはログアウトするまで再ログインはしない作りになっているため、より実運用に近づけるために、ログイン情報をVUごとにCookieへ持た May 17, 2023 · メトリック名 説明; data_received: 受信したデータの量: data_sent: 送信されたデータ量: http_req_blocked: リクエストを開始するまでにブロック（TCPコネクションスロットの空き待ち）された時間 Constant VUs. Performance Comparison Apr 28, 2024 · The key difference is the options constant. Nếu các bạn không muốn tự tay code file Config bằng Javascript như trên thì các bạn cũng có thể sử dụng cloud K6 để Test nhé, rất là tiện đó. from 'k6'; export const options = { scenarios: { my_web_test Nov 10, 2019 · 2) rps:1; vus: 1. __VU and __ITER are both global variables with execution-context information that k6 makes available to the test script. Options configure test-run behavior. . It may be wise to have it as a manual step as part of a pipeline so you can run it in an ad-hoc fashion or run it when your code is deployed to a performance test environment, for example. This can be useful when you have fixed sets of test data that you want to partition between VUs. Apr 16, 2024 · Though the executor has not been defined by default, k6 identifies the stages, durations, and targets in the options object, and determines that the executor is ramping-vus. Parameterization helps to prevent server-side caching from impacting your load test. Jul 9, 2019 · The format of running k6 is like “k6 [command]”, which you can then pass your desired command and let it run by k6. 0/index. Graceful stop May 6, 2021 · The --vus option stands for virtual users, We’ll also use an additional option of k6 that allows us to simulate an increase in the load on our application. Here are the parameters: v = number of VUs (users) t = total time (duration) of the scenario s = stages where: ** Each stage has a percentage of the total number of requests sent by the VUs ** Each stage has a duration equal to a portion of the total time ** ex, if number of stages == 6 ℹ️ Identifiers. VUs (vus) là số lượng active users. Scripts in k6 need to have that default function as a requirement. Aug 10, 2020 · The number of VUs to pre-allocate before the test starts. 4. Basic available commands, as of version 0. The end-of-test summary shows aggregated statistical values for your result metrics, including: Apr 4, 2024 · Understanding Command-Line Options. It is important to consider the number of VUs and the duration of the test when adjusting RPS to ensure accurate results. May 5, 2021 · The --vus option stands for virtual users, which are used to send the requests to the system under test. Name Type Description; threshold: string: This is the threshold expression string specifying the threshold condition to evaluate. In the open model, on the other hand, VUs arrive independently of iteration completion. Load test vus & duration (scenario 1) Dec 10, 2021 · By default, k6 scale and the other commands will assume you want to talk to a k6 process that is running its API server on localhost:6565, but you can use the -a/–address command line option to specify both the bind address/port for the API server (e. When you run a test, k6 outputs a plain-text logo, your test progress, and some test details. get ('https://test. grafana/k6-operator is a Kubernetes operator for running distributed k6 tests in your cluster. Arguably the "looping vus" description explains better that you have 2 VUs looping for 2 minutes. The maximum number of VUs to allow during the test run. But, if you have a k6 Cloud account, you can also use the k6 cloud command to outsource the test to k6 Jul 19, 2023 · Hi @whatyouhide,. js -i 3-e: Sets an environment variable to pass to the script: k6 run test. I can access env vars in init context with the following: apiVersion: k6. VUs, Iterations, Sleep time… how do they work together? I updated the script. (I can't ever decide how to represent precedence: with equality operators? through arrows? through some sort of vertical and horizontal Jul 1, 2023 · 14. maxVUs. 3. 200 iterations, 10 VUs * 20 iters each ; Each iteration of the default function is expected to be roughly 515ms, or ~2/s; The normal way to define load in k6 is using VU. Có rất nhiều options cho k6, nhưng trước tiên mình muốn giới thiệu về hai options là VUs và duration. Try out and share prebuilt visualizations. For overriding specific options, refer to the documentation on ⚠ The -e flag does not configure options. 4:5678 –paused myscript. Test performance under increasing load. Aug 20, 2022 · During our development, usually, there is a time when we want to determine how many users our system can handle. 1, is as follows. For example, k6 run -u 50 script. 0 and analyze your performance results with Grafana or other tools. All unique identifiers are sequentially generated starting from a base of zero (iterations) or one (VU IDs). js --vus 10 --duration 30s--duration: Sets the duration of the test: k6 run test. By iteration rate. k6 provides the Tags and Groups APIs to help you during the analysis and easily visualize, sort and filter your test results. You signed in with another tab or window. Add virtual users. Explore the endless possibilities of k6 and xk6. Goal: Understand the different ways to configure k6 options. In this case, we are setting the vus to 1 (default), running for 1 minute, and we are also defining a single threshold. Sadly nothing works perfectly all the time, so knowing where you can go for help is important. Then, you can execute the test without specifying options: $ k6 run my_test. After 30 seconds, k6 starts the news scenario. js) and where the k6 that you want to With these example snippets, you'll run the test with your machine's resources. k6 has a growing and helpful community of engineers working with k6-operator, so there’s a good chance your issue has already been discussed and overcome. It provides detailed configuration options for virtual users (VUs) and iteration schedules in load tests. JSON An open standard, human-readable data-serialization format originally derived from JavaScript. In the above example, there are three options specific to the ramping-vus executor. The new version of the file is this: By default, k6 prints summarized results to stdout. Run a test. 2. You signed out in another tab or window. That's the entry point for To stop a k6 test, learn how to use the abortOnFail threshold option or integrate with the k6 CLI or Grafana Cloud k6. Jan 8, 2019 · What you basically want is a given set of stages to repeat over prolonged period of time. vus: 10, // A string specifying the total duration of the test run. We can update the vus option to increase the number of requests being performed simultaneously. Interact with real browsers and collect frontend metrics as part of your k6 tests. Some executors use the closed model, while the arrival-rate executors use the open model. instead of ~+100rps I expected to see load in ~1rps The number of VUs is fixed at 10, and are initialized before the test begins; Total iterations are fixed at 20 iterations per VU, i. Dec 22, 2020 · For example, the following command will run the test with 10 VUs. I would like each VU be assigned to a previous known id obtained from an existing array and that VU execute the instructions from the default function only once at the time the VU is created. The mechanism is to introduce sleeps in between VU iterations to pause execution, until the time difference How and what kind of metrics k6 collects automatically (_built-in_ metrics), and what custom metrics you can make k6 collect. With the constant-vus executor, a fixed number of VUs execute as many iterations as possible for a specified amount of time. Grafana Cloud is the easiest way to get started with Grafana k6 and performance 6. Model the workload. If you go back to our script, you'll see there is a default function. When things go wrong. Compare this behavior with K6_ITERATIONS=120 k6 run script. It’s shown in kilobytes and the rate per second. Iteration (iterations) là tổng số lần VUs thực thi default function. Besides the common configuration options, this executor has the following options: Sep 17, 2021 · we need to create the payload inside the export default function so that we can modify it there before sending it. In this case, we will simulate one user, or vu (Virtual User), accessing for 5 seconds. js Errors: ERRO[0000] Uncaught (in promise) GoError: browser not found in registry… After 30 seconds, k6 starts the news scenario. js v2 and even more Babel plugins in extended mode. import http from 'k6/http'; import {sleep } from 'k6'; export const options = {// A number specifying the number of VUs to run concurrently. You switched accounts on another tab or window. It’s also in these forums where you’ll be able to get help from members of the k6 development team. Load Testing can help us to answer that: Load Testing is a type of Performance Testing used to determine a system's behavior under both Jan 9, 2024 · import http from 'k6/http'; import {sleep } from 'k6'; export const options = {vus: 10, duration: '30s',}; export default function {http. For example, for the above execution, if the user wants to define a greater number of VU's and a duration interval, he can add the following instructions: Feb 8, 2024 · hakotensanさんによる記事. Dec 1, 2020 · Prerequisites: Install the k6 tool. e. At the beginning of the test, k6 starts the contacts scenario. k6 then loads all the definitions from the server and their dependencies. The default value is 30s. JMeter k6 Concepts. js -e Once you've decided on the load profile, you can schedule it with k6 options. k6 provides two broad ways to model load: Through virtual users (VUs), to simulate concurrent users Using k6, you can test the reliability and performance of your systems and catch performance regressions and problems earlier. io/v1alpha1 kind: K6 metadata: name: k6-sample spec: parallelism: 1 script: configMap: name: "env-test" file: "archive. Example. 25. The test runs 200 total iterations and has a maximum duration of 30 seconds. js file to clarify how K6 works, and how it affects the API calls. Apr 29, 2024 · Tools: k6: a really amazing HTTP benchmarking tool by Grafana. io/k6-utils/1. k6 is developed by Grafana Labs and the community. k6 helps engineering teams prevent errors and SLO breaches, enabling them to build resilient and high-performing applications that scale. The list of k6 extensions is long and includes the following: Avro; ZeroMQ; Ethereum; STOMP; MLLP; NATS; You can see the complete list of k6 extensions available in our documentation. These are: stages – accepts an array of target number of VUs, and a duration over which ramp up or ramp down occurs; startVUs – accepts an integer count of the number of starting VUs Use this executor if you need a specific number of VUs to complete the same number of iterations. k6 run --vus 10 script. Docs: k6 Options. - data_sent: The Feb 1, 2022 · WARN[0002] Insufficient VUs, reached 900 active VUs and cannot initialize more executor=constant-arrival-rate scenario=default. The example posted by @eyeveebe above should work actually, with minor adjustments. Exactly 900 iterations are started in total, 30s * 30 iters/s. I knew about the k6-option lookup order, because I keep changing the diagram. If the VMId just needs to be a unique UUID, have a look at jslib utils library, which contains a function for generating a uuidv4: Dec 18, 2023 · Greetings All, I have attempted to create the following scenario in k6 for awhile now without any success. Jan 13, 2024 · The options variable contains the test configuration. You can see this in the "summary" as "2 looping VUs for 2m0s". Test lifecycle. k6 has a growing and helpful community of engineers working with k6-operator, so there's a good chance your issue has already been discussed and overcome. Ao ler este artigo, você aprenderá a realizar testes de carga e estresse em sua API RESTful usando uma ferramenta de teste de carga gratuita e de código aberto chamada k6. Kita dapat run load test dengan command. The function default defines the actions that this user will perform. In short, in the closed model, VU iterations start only when the last iteration finishes. Thresholds in k6 allow us to specify some metrics that indicate a successful or failed performance test. 50 VUs try to run as many iterations as possible for 30 seconds. If any of the thresholds had failed, the little green checkmark next to the threshold name (http_req_failed, http_req_duration) would be a red cross and k6 would exit with a non-zero exit code. So the above is equivalent to the following config: export let options = { duration: '1s', vus: 1 }; Which is exactly the options from your question, minus the executor itself (but it still uses the constant-vus executor). But, if you have a k6 Cloud account, you can also use the k6 cloud command to outsource the test to k6 servers. Scenario. There are two solutions: Just run the script in a loop in a bash/cmd/shell script - will have some pauses in between runs as k6 will need to initialize again. It specifies a duration that k6 will wait before forcefully interrupting an iteration. For the ramping-vus executor, a related option, gracefulRampDown, exists to let VUs finish as their number ramps down. Read on to learn about how k6 allocates VUs in the arrival-rate Using k6, you can test the reliability and performance of your application and infrastructure. Having said that, you can specify such options in your code as well — providing you with better control over it. 0, we support unary gRPC requests. For example, -e K6_ITERATIONS=120 does not configure the script iterations. Path: Before v0. Oct 12, 2023 · Source: k6 vs. js"; export const options = { "duration": "10s Changes to the iteration rate are performed by k6, adjusting the number of VUs The script waits for a period of time (defined by the gracefulStop option) for iterations to finish. Sep 24, 2020 · 8. Jul 15, 2023 · Understanding Load Testing. For example, options are how you define test tags, thresholds, user agents, and the number of virtual users and iterations. The ability to set iteration rate comes with a bit more configuration complexity: you must pre-allocate a sufficient number of VUs. But as you've seen in the formulas and examples, it is possible to generate a reasonably constant request rate with k6, by limit the number of requests it can make over a period of time. By default, k6 prints summarized results to stdout. We mentioned this at the beginning of the guide: automation in performance testing is about establishing a repeatable and consistent testing process. Prometheus: a monitoring system, which allow you to store metrics; Grafana Grafana: a dashboard construction tool, which can show you Oct 2, 2021 · I guess what you’ve done now is actually exactly this - 1000 VUs doing in total 1000 iterations (in your case this likely will mean everyone will do 1 iteration, but I would recommend using per-vu-iterations executor in most cases ). 0s), 000/900 VUs, 128808 complete and 0 interrupted iterations default [=====] 000/900 VUs 30s 5000 iters/s. 1000 with acceleration during for N minutes by option target in the stages — I see that load has increased by ~+100rps in peak, although option "rps" according to k6 documentation is "The maximum number of requests to make per second, in total across all VUs" option i. References. Run K6 dengan command vus & duration. Dec 12, 2023 · CI/CD Pipeline. Say // init code let x = 0 // i want this to be static // options export let options = { vus : 10, iterations : 10 }; // VU code Scripting examples on how to parameterize data in a test script. Sep 27, 2021 · According to your question, We need to understand three things here. tar" runner: env: - name: TEST_VUS value: "4" Mar 13, 2024 · Note that constant-vus is the default when not using any scenarios and specifying duration and vus. $ K6_VUS = 10 K6_DURATION = 10s k6 run script. To understand the concept of VUs, think of them like parallel infinite loops. 31. Reload to refresh your session. Feb 25, 2019 · But if you have dozens of scenarios, you can write a helper function that generates the final options. Complement automation with a repeatable QA process. This section covers the important aspect of metrics management in k6. Starting with k6 v0. Follow along to learn how to: Run a test. The browser module brings browser automation and end-to-end testing to k6 while supporting core k6 features. Jun 18, 2024 · Understanding Virtual Users (VUs) in K6. The code snippet below is an example of a constant-arrival-rate scenario. Tried Once again, our test has only run a single virtual user or VU. To run a simple local script: Create and initialize a new script by running the following command: Jan 30, 2024 · Here’s how to configure load with the open source load testing tool Grafana k6 in the options object: JavaScript Copy import http from 'k6/http'; import { sleep } from 'k6'; export const options = { // Key configurations for avg load test in this section stages: [ { duration: '5m', target: 100 }, // traffic ramp-up from 1 to 100 users over 5 If nothing else is provided, k6 will essentially be in a state of waiting for commands. Key features. k6 is packed with features, which you can learn all about in the documentation. Jan 4, 2022 · Tip: The options = {} object in the k6 test is optional for running HTTP tests, but it is very handy when we are running load tests with k6. 50 VUs each try to run 100 iterations in one minute. k6 run --vus 400 -–duration 60s load_api. Threshold Syntax Jan 6, 2021 · Is there a way to use a static variable shared across VUs in K6. k6. Arrival-rate VU allocation. Aug 25, 2023 · Hello, When I run my test script specifying vus and duration I get the following error: CMD: k6 run --vus 2 --duration 10s script2. ถ้าอยากอ่านง่ายขึ้นในลักษณะของกราฟบน local เราแนะนำ kx6 dashboard ถ้ากดไปตรง tab report คือมี option download ออกมาเป็น pdf ไฟล์ได้เลย The test life cycle document breaks down each stage of a k6 script, including iterations in VU code. Together, these terms form a scenario, which is part of the test configuration options. If you use too few VU threads you will not reach the desired RPS Ramping arrival rate. 5K. Alternatively, you can dynamically load the definitions by using the gRPC reflection protocol. To enable reflection, you can pass the reflect: true option to Client. Jul 19, 2023 · Hi @whatyouhide,. Ramp the number of requests up and down as the test runs. Options. If none are given, k6 will simply exit once the duration has been reached. wl dg mq ux ex zw ca fe qn gu