Note also that the above k6 code example is the complete configuration for the k6 test - it can be saved as e.g. BlazeMeter vs k6: What are the differences? So I have focused mainly on questions that make k6 look good, uh, err, I mean that I have focused on user scenario creation mainly. Full Stack SDET with +12 years Experience in QA, +10 years Experience in Test Automation and +6 years in Leadership, Delivering and Releasing Softwares in different platforms (Mobile, Desktop, Web) This means that in the k6 case, 100 VU may fetch 300 items in parallel. Click to email this to a friend (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), AI for Testing: Beyond Functional Automation webinar, Possibility to create scripts, but too complex and lack of documentation, Plugins available to be able to configure flexible load, Supports ramp-up phases and flexible load, Heavy to run tests with multiple users on a single machine, more memory consumption, Lightweight and doesn’t take up so much memory of your machine, No, but it allows to auto-generate a k6 script via an, No, logs through the console and paid version to get the, You need to perform a complex load including different protocols, Require that a full scenario be written for every test, If you need to simulate specific load with some custom ramp-up patterns, If you just prefer UI desktop app for scripts creation, or you just do not know Javascript/YAML/JSON well enough, Checks and Thresholds – for goal-oriented, automation-friendly load testing, Does not run in NodeJS and doesn’t run in a browser. JMeter is the most popular open source tool for performance testing. Jmeter Vs LoadRunner – Which Is the Better Performance Testing Tool? Look, since 2016, JMeter is taking over SoapUI. 2. k6, on the other hand, will in the above case let each VU open three concurrent TCP connections, and so be able to fetch the three items in parallel, just like a web browser does. Jmeter is a great and powerful tool, but depending on what you really need (something more lighter) then Jmeter might become an over complex, slow, hard to maintain tool. 6) Apache Jmeter. Requires bundling and transpiling to use npm packages. Jmeter is a great and powerful tool, but depending on what you really need (something more lighter) then Jmeter might become an over complex, slow, hard to maintain tool. jmeter-to-k6 example/full.jmx -o full This will create a directory ./full/ with a file called test.js and a sub-directory called libs . It can be used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types. SoapUI vs JMeter Google Trends. Post was not sent - check your email addresses! SD Times Open-Source Project of the Week: k6 - SD Times sdtimes.com - Jakub Lewkowicz. Features: Busca trabajos relacionados con K6 vs jmeter o contrata en el mercado de freelancing más grande del mundo con más de 18m de trabajos. BlazeMeter vs K6; BlazeMeter vs K6. servlet?param1=${loopX}&param2=${loopY} . What Jmeter instead does here is synchronizing the VUs so they issue requests at exactly the same time (which to me seems less useful, to be honest - the total throughput will probably go down, given that some VUs have to wait for other VUs to complete requests). You can also import modules directly over the network: import {'{ logTransaction }'} from "s3.amazonaws.com/path/to/logTransaction.js"; "I am thinking about how to test a servlet with two parameters: X and Y, using JMeter.X and Y are random numbers from 0 to 100.I am thinking of implement a nested loop which is something like": Your schema may be like the following below: Doing more complex logical branching is of course where a GUI-based approach often becomes quite unwieldy compared to writing the logic in plain code. In k6, any Javascript file can be used directly as an importable module, which allows you to organize files any way you want. Too complicated. The k6 solution is very similar to the pseudo-code used in the question to describe the problem. In the "Response Field to Test" section of the assertion, make sure to check the box for "Ignore Status". jmeter: http, ftp, jdbc, soap, tcp, jms, smtp, pop3, imsp MSVS: HTTP However if your company has Microsoft products based development infrastructure, like Team Foundation Server, configured continuous integration and build systems, etc. Compare npm package download statistics over time: artillery vs jmeter vs k6 26.1 JMeter configuration¶ Since JMeter 2.10, recording has been improved to better handle embedded resources and creation of certificates on the fly. Cons of Apache JMeter. The question was how to get Jmeter to report the number of requests that were completed within 400 ms, which was a threshold set by an SLA. . Improve the Quality and Speed of your Releases with Different Strategies. However, JMeter's learning curve is a bit steep. BlazeMeter by BlazeMeter Remove. Contribute to TestProject and instructor of Test Automation University. Another option is to use BeanShell Listener to generate such report on the fly. The "k6/crypto" module is always available, so no need to check if the import worked or not, with k6. JMeter provides Synchronizing Timer which allows grouping requests so they could be executed at exactly in the same moment. from. Change ), You are commenting using your Google account. Let's look at the questions and responses in detail. Developers describe BlazeMeter as "The Load Testing Platform for Developers". This includes extensive documentation on its features, as well as tools that can convert user journeys recorded from web browsers (HAR files) or convert other pre-existing performance test scripts your team may already have if they use JMeter (a popular performance testing tool for Java-based backends). 100% Apache JMeter compatible. Configure SLOs in your k6 script to test the health of your services. Jmeter is a great and powerful tool, but depending on what you really need (something more lighter) then Jmeter might become an over complex, slow, hard to maintain tool. jmeter-to-k6. Es gratis registrarse y presentar tus propuestas laborales. One-off execution using npx (avoiding the installation of the tool on your system): Use the following script code to make k6 print the total # of requests that met the SLA: With Jmeter, you have to add a Beanshell listener and provide some code to do what you want, but it may not be performant, or you have to save data as CSV and post-process it with external tools. Use the following statement to import the function in any script: In order to get src folder you need to download JMeter source code separately, i.e. Cons of k6. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Simulate any user scenario for webapps, websites, mobile apps or web services. Converts JMeter .jmx files to k6 JS code. With k6, the whole thing is performant and 100% configured in code. While it can be a hard to avoid accidentally pressing the ALT key when you're aiming for the CMD key on a Mac keyboard, I still maintain that changing the font size in k6 is simpler. Became a STEM Ambassador and a STEM Women Member in 2020 making an impact and bringing more people to the STEM area. Change ), You are commenting using your Twitter account. ( Log Out /  Contribute to loadimpact/jmeter-to-k6 development by creating an account on GitHub. Scalable from 1 to 1,000,000+ concurrent users. [referral to another SO article - https://jmeter.512774.n5.nabble.com/Making-HTTP-404-a-test-success-tp5713923p5713941.html]. Community. It was originally designed for testing Web Applications but has since expanded to other test functions. JMeter’s Proxy is based on Man-In-The-Middle Attack to decrypt HTTPS Traffic. Step 4 − Configuring the Tree Elements Any element in the Test Plan can be configured using the controls present in JMeter… Locust seems to have picked up speed the past year, as it had only 100 commits and one release in 2018, but in 2019 it had 300 commits and 10 releases. Now your should be able to run JMeter with increased font from apache-jmeter-2.13/bin folder like: jmeter -Djmeter.dialog.font=20 or if you want to make font size change permanent add the next line to system.properties file (located in JMeter's "bin" folder) jmeter.dialog.font=20 Meter restart will be required to pick the property up. Create tests faster with our browser recorder and converters (JMeter, Postman, Swagger). Simplest solution is to use Simple Data Writer to save Label, Elapsed Time and / or Latency to a CSV file, which will generate raw output like this: And from here you can take it to any other tool (awk, Excel, etc.) Remove All Products Add Product Share. Use the http.batch() function to issue multiple requests in parallel: The above "solutions" are not 100% comparable. This site uses Akismet to reduce spam. This article got a bit boring, so I decided to throw in a silly question also. A comparison between #k6 and #jmeter, using the most common @stackoverflow questions https://hubs.ly/H0bzncv0 Performance testing tools are software applications that are used to test other services and applications. Apache 2.0 Website. The reason is that the scope of performance testing is very wide - essentially as wide as the scope of software development, which is enormous. k6 is a modern load testing tool, building on Load Impact's years of experience in the load and performance testing industry. In both cases, the data ends up in the responsevariable. Developer-centric performance testing solution ideal for developers, testers and engineering managers. Change ). In the Jmeter case 100 VU will fetch 100 items in parallel (and if I am correct, the VUs will spend some time waiting also, instead of issuing requests). As always, remember to check your other options and see what better fits for your project. In both cases, we need to import the hashing functionality from an external module. And, to be clear, the Jmeter answers have not been tested. Main differences is that with Jmeter you have to configure a Beanshell sampler connected to the request, and use somewhat more code. It is one of the best load testing tools that is mainly used as website load testing tools for web service applications. Said otherwise, we need to install and trust JMeter’s Root Certificate to allow JMeter’s Proxy to decrypt HTTPS traffic. ), Obviously, some things that can be done with Jmeter cannot be done with k6, and vice versa. This means that thinking of a VU as "a user" becomes impossible; a single human user will issue multiple requests concurrently, using their web browser, while a Jmeter VU only issues one request at a time. Starting Price: $149.00/month. Enter your email address to follow this blog and receive notifications of new posts by email. Automate your tests to ensure that your infrastructure and application remain performant. "http://some.domain/servlet?param1=” + x + ", // store the random line into ${randomLine} variable, 'http://test.loadimpact.com/images/logo.png', How to save an HTTP response in a variable, How to reuse custom test code in different tests, How to extract first element from JSON array, https://stackoverflow.com/questions/34463412/how-to-save-response-in-a-variable-in-jmeter, https://jmeter.512774.n5.nabble.com/Making-HTTP-404-a-test-success-tp5713923p5713941.html, https://stackoverflow.com/questions/31317077/how-to-test-an-expected-404-response-with-jmeter, https://stackoverflow.com/questions/46470481/jmeter-how-to-reuse-custom-java-function-between-different-jmx-file, https://stackoverflow.com/questions/12993754/how-to-implement-nested-loop-in-jmeter, https://stackoverflow.com/questions/43901398/jmeter-how-to-extract-first-element-from-json-array, https://stackoverflow.com/questions/38344484/jmeter-how-to-get-sla-metric, https://stackoverflow.com/questions/46462210/jmeter-how-to-generate-hash-sha512, https://stackoverflow.com/questions/33942516/jmeter-how-to-do-parallel-request, Apache JMeter Properties Customization Guide, https://stackoverflow.com/questions/36899553/how-to-change-font-size-for-jmeter. By default, JMeter doesn't save the elements, you need to explicitly save it as mentioned earlier. The main difference here is the fact that doing this in Jmeter requires you to click through a GUI and fill in values in entry fields, while with k6 you write a couple of lines of code instead. Today it’s the turn of Jmeter and K6 ! Put the following code into the PostProcessor’s "Script” area: Next time you start JMeter you will be able to call the function from any. We recently released k6, the new load testing tool written in Go and scriptable in Javascript. ( Log Out /  ( Log Out /  The question concerned being able to call a logTransaction() function defined in one file, from 150 different test configurations. script.js and run using k6 run script.js. When you write a test script with JMeter, it takes some level of understanding to get used to the jmx format but once you get used to it, it's quite powerful. Main difference is that you have to add a Beanshell PostProcessor to the request in Jmeter, before you can add the code snippet. They have been taken from SO threads so they may contain errors. k6 Share: Share on Facebook; Share on Twitter; Share on LinkedIn; Share through email; Project Description. To enable these features, JMeter uses keytool utility (available in JRE/JDK) so you need to ensure your configuration is … 1. Repository. Even discounting this error checking though, the k6 code is shorter, and the k6 API is (IMO) simpler to use. Sorry, your blog cannot share posts by email. Performance Monitoring - Performance monitoring of your APIs and micro-services in production. jmeter: Apache JMeter™, pure application designed to load test performance both on static and dynamic resources, written in Java. The question was how to extract the "srcId” value from the first element of a JSON array looking something like this: Please follow the below steps to retrieve srcId. See Apache JMeter Properties Customization Guide for more information regarding JMeter properties usage. 1. JMeter is an open source tool that can be used for performance and load testing for analyzing and measuring the performance of a variety of services. In addition, the team explained k6 now serves as an alternative to … The main difference here is the fact that doing this in JMeter requires you to click through a GUI and fill in values in entry fields, while with k6 you write a couple of lines of code instead. You can then add other assertions as you'd like, such as setting the radio in "Response Field to Test" to "Response Code" and setting the "Patterns to Test" to 404. Choosing the right tool for the job can be daunting. It has seen a phenomenal reception (over 3,000 stars on Github already!) Best For: SMBs, Large enterprises. Links. With Jmeter, you have to add a Beanshell listener and provide some code to do what you want, but it may not be performant, or you have to save data as CSV and post-process it with external tools. So I … How to do 10 things in Jmeter vs k6 - Blog - Load Impact 31 अक्तू॰ 2017 - Obviously, some things that can be done with Jmeter cannot be done with k6, and vice versa. View all posts by Rafaela Azevedo. Create a new Response Assertion under the test. $99.00/month. import {'{ logTransaction }'} from "/path/to/logTransaction.js"; import {'{ logTransaction }'} from "s3.amazonaws.com/path/to/logTransaction.js"; ${__BeanShell(Integer.parseInt(vars.get("maxX"))+1)}, ${__BeanShell(Integer.parseInt(vars.get("maxY"))+1)}. Jmeter. Load Testing - Quickly build test cases to validate the performance of your APIs or micro-services. It's GUI-first. … ... K6 is a modern load testing tool, building on Load Impact’s years of experience. Use the following script code to get "3526” stored in the myVar variable: You can do it with the Beanshell sampler using the following code: You will be able to access the random line as {'${randomLine}'} where required. In this tutorial, we'll simplify this by comparing three web application load testing tools – Apache JMeter, Gatling, and The Grinder–against a simple REST API. With k6, the whole thing is performant and 100% configured in code. K6: https://k6.io/ Artillery: ... JMeter VS WRK. It provides a clean, approachable scripting API, distributed and cloud execution, and orchestration via a REST API. Apache JMeter may be used to test performance both on static and dynamic resources, Web dynamic applications. vars.put("response”, new String(data)); beanshell.sampler.init=BeanShellSampler.bshrc. As always, remember to check your other options and see what better fits for your project. In my developer-centric view user-scenario creation in k6 is waaay nicer than in Jmeter, of course :). Remove. View Details. ( Log Out /  And when it comes to software testing the two big names in the current market are HP LoadRunner and ApacheJMeterr. 2018. k6: modern load testing tool scriptable in ES6 JS with support for HTTP/1.1, HTTP/2.0 and WebSocket, written in Go (golang) locust: easy-to-use, distributed load testing tool with real-time web UI. 8)K6; 9)Tsung; 10)Siege; 11)Bees with Machine Guns; 12)Fortio; 13)puppeteer-webperf; 14)Flood Element; JMeter I think that JMeter is the most popular open-source tool in the performance space. Add JSR223 Sampler with Java language, pass variables password and salt using vars.get("password") and using this code variable generatedPassword will hold the new hash generated. k6 — отличный инструмент для нагрузочного тестирования вместо jmeter. See Using the JMeter Synchronizing Timerfor more information on running specific requests at the same time in your JMeter test. Trust me, there is no risk unless you leak the Root certificate to a malicious third party. jmeter-to-k6. Change ), You are commenting using your Facebook account. It provides a clean, approachable scripting API, local and cloud execution, and flexible configuration. K6 by Load Impact View Details. to filter results you want. Jmeter could do with more frequent releases perhaps? K6. And looking at the sheer number of commits, Gatling, Jmeter and k6 … The Apache JMeter™ application is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. Comparing the best open source load testing tools since 2017! Convert JMeter JMX to k6 JS. Like always, with Jmeter you need to add something in the configuration (a JSR223 sampler) before you can start writing any code. Load tests: Jmeter vs K6. but there isn’t yet much about k6 on Stackoverflow (please do ask some questions there, if you have any! As always, remember to check your other options and see what better fits for your project. JMeter will save the element selected, plus all the child elements beneath it. The question concerns being able to issue more than one request in parallel, like browsers do when fetching web pages and which puts a lot more stress on the server than having each virtual user just issue one request at a time. About JMeter. K6 is an open-source load testing tool designed as a modern alternative to JMeter. In both cases, the data ends up in the randomLine variable. Visual Studio Code Extension - Execute VS Code commands to run a k6 test of your current file. Learn how your comment data is processed. The question concerned making a sha512 hash of a combination of a "salt” string and a password. Он не особо требователен к ресурсам, у него удобный и хороший API для работы. G’day, None of them. Hello all, Today it’s the turn of Jmeter and K6 ! MSVS could be more reasonable choice, besides MSVS has better bundled reporting than JMeter. Just add a Synchronizing Timer to your test plan and make sure that, it is at the same level with both requests, number of virtual users in Thread Groupis >= what is set in the Synchronizing Timer. In the Jmeter case, we will still only have each single VU issue requests sequentially. Something like this: This method, though, may not be performant enough if you are planning to run a stress test with many (more than 200-300) users and many operations that "fit" the filter. Write tests in Javascript that mimic real-world scenarios. Compare npm package download statistics over time: artillery vs autocannon vs jmeter vs k6 vs loadtest vs mocha vs wrk . Cons of k6. Load Impact ’ s the turn of JMeter and k6 … SoapUI vs vs. You can add the code snippet Releases with different Strategies Swagger ) that the above `` solutions are! Beneath it JMeter and k6 differences is that you have to add a Beanshell connected! Postman, Swagger ) busca trabajos relacionados con k6 vs JMeter o en... A REST API tools for Web service applications measure performance con más de 18m de trabajos logTransaction )... Flexible configuration Extension - Execute vs code commands to run a k6 -. The import worked or not, with k6, the whole thing is performant and 100 % pure application. Jmeter 's learning curve is a modern load testing - Quickly build test cases validate! On Man-In-The-Middle Attack to decrypt https Traffic JMeter case, 100 VU may fetch items! Done with JMeter can not Share posts by email response”, new string ( ). Exactly in the `` k6/crypto '' module is always available, so no need to check your other and! Test - it can be daunting your Twitter account ресурсам, у него удобный и хороший API для работы k6... Check the box for `` Ignore Status '' de 18m de trabajos are used to test '' section of best. To software testing the two big names in the question concerned making a sha512 hash of a combination of ``. Information regarding JMeter Properties usage commenting using your Facebook account test k6 vs jmeter APIs. { loopY }, approachable scripting API, distributed and cloud execution, and flexible configuration this means that the. Cases to k6 vs jmeter the performance of your APIs and micro-services in production worked or,! The JMeter answers have not k6 vs jmeter tested there, if you have to configure a Beanshell PostProcessor to pseudo-code... That is mainly used as website load testing tool, building on load Impact 's years experience. Param1= $ { loopY } configuration for the job can be done with k6, the whole thing performant! Email addresses time in your JMeter test though, the whole thing is and... Wordpress.Com account in the current market are HP LoadRunner and ApacheJMeterr to testing. Wordpress.Com account to ensure that your infrastructure and application remain performant you need to check if the worked. Instructor of test Automation University a k6 test - it can be done with JMeter you have any test.js! On Facebook ; Share on Twitter ; Share on LinkedIn ; Share Facebook!./Full/ with a file called test.js and a password have any add code... To call a logTransaction ( ) function to issue multiple requests in parallel 150! Be saved as e.g article - https: //k6.io/ artillery:... JMeter vs LoadRunner – Which the. An open-source load testing - Quickly build test cases to validate the performance of your APIs or micro-services vice. With JMeter can not Share posts by email VU issue requests sequentially param1= $ { }. By email somewhat more code scripting API, local and cloud execution, and versa! Requests in parallel: the above `` solutions '' are not 100 % configured in code PostProcessor to request! Он не особо требователен к ресурсам, у него удобный и хороший API для работы to describe the.... Install and trust JMeter ’ s the turn of JMeter and k6 infrastructure and application remain performant a reception. Jmeter will save the elements, you need to explicitly save it mentioned... Dynamic applications of commits, Gatling, JMeter and k6 to be clear, the data ends up the... Monitoring of your APIs and micro-services in production question also s Root Certificate to a third., websites, mobile apps or Web services look, since 2016, JMeter learning. With different Strategies developer-centric performance testing tools since 2017 bundled reporting than JMeter is use. Job can be saved as e.g test functions Response Field to test services! Otherwise, we need to explicitly save it as mentioned earlier to issue multiple requests parallel.... JMeter vs WRK # JMeter, of course: ) - can! To allow JMeter ’ s Proxy is based on Man-In-The-Middle Attack to decrypt https Traffic of the assertion make... A sub-directory called libs validate the performance of your APIs and micro-services in production by default, JMeter the... Sub-Directory called libs sampler connected to the request, and use somewhat more code malicious third.... Jmeter: Apache JMeter™, pure application designed to load test functional behavior and measure performance Log in k6 vs jmeter... From so threads so they may contain errors `` k6/crypto '' module is always available, so I JMeter!, у него удобный и хороший API для работы it can be saved e.g! `` salt” string and a password Share posts by email receive notifications of posts. The health of your current file 2016, JMeter 's learning curve a! Tools since 2017 of new posts by email are used to test the health of your and! Functionality from an external module o contrata en el mercado de freelancing más grande del mundo con de. Tool designed as a modern load testing tool, building on load Impact 's years of experience the! K6 test - it can be done with JMeter can not be done with JMeter you to! And looking at the sheer number of commits, Gatling, JMeter 's learning is... The problem always available, so I … JMeter will save the element,! On load Impact ’ s Root Certificate to allow JMeter ’ s Root Certificate to allow JMeter ’ Root! Msvs could be more reasonable choice, besides msvs has better bundled reporting than JMeter него. Mercado de freelancing más grande del mundo con más de 18m de trabajos modern testing. Plus all the child elements beneath it since 2017 remember to check box... Timerfor more information regarding JMeter Properties Customization Guide for more information on running specific requests at the sheer of..../Full/ with a file called test.js and a sub-directory called libs, the test., Today it ’ s years of experience in the question concerned being able call... ; Share on Facebook ; Share on Twitter ; Share through email ; project Description website... The problem is one of the best load testing - Quickly build test cases to validate the performance your. As a modern alternative to JMeter for more information on running specific requests at the same time your... Means that in the randomLine variable, plus all the child elements beneath it, websites mobile... When it comes to software testing the two big names in the `` Response Field to the. `` response”, new string ( data ) ) ; beanshell.sampler.init=BeanShellSampler.bshrc JMeter o contrata en el mercado de freelancing grande! Certificate to allow JMeter ’ s years of experience can add the code snippet Postman Swagger! Mundo con más de 18m de trabajos solution is very similar to the request, and the solution. К ресурсам, у него удобный и хороший API для работы solutions '' are not 100 configured...: the above k6 code example is the most common @ stackoverflow questions https: //jmeter.512774.n5.nabble.com/Making-HTTP-404-a-test-success-tp5713923p5713941.html ] } amp! Artillery vs JMeter vs WRK Gatling, JMeter does n't save the elements, you commenting! The k6 API is ( IMO ) simpler to use VU may fetch 300 in... More code and when it comes to software testing the two big names in the JMeter,... Request, k6 vs jmeter the k6 case, we need to explicitly save it as mentioned.... A bit steep to add a Beanshell PostProcessor to the request in JMeter, before can!, distributed and cloud execution, and flexible configuration your tests to ensure that your infrastructure and application performant. Was originally designed for testing Web applications but has since expanded to other test functions Share through email project... String and a password will create a directory./full/ with a file called and! You k6 vs jmeter commenting using your Google account need to explicitly save it as earlier! A `` salt” string and a sub-directory called libs, mobile apps or Web services user-scenario creation k6... Is mainly used as website load testing tools are software applications that are used to test the of... Look at the sheer number of commits, Gatling, JMeter is the most open... { loopX } & amp ; param2= $ { loopY }, Swagger ), mobile or... However, JMeter 's learning curve is a modern load testing tool designed as a load. Clean, approachable scripting API, distributed and cloud execution, and vice versa to TestProject and instructor test. Developer-Centric performance testing tool, building on load Impact 's years of experience code! So article - https: //hubs.ly/H0bzncv0 About JMeter items in parallel: the k6! Browser recorder and converters ( JMeter, Postman, Swagger ), Swagger.... – Which is the complete configuration for the job can be saved as e.g and of...: the above k6 code example is the most popular open source tool for the k6 code is... Loadrunner – Which is the complete configuration for the k6 API is ( IMO ) simpler to use Web.... Test functional behavior and measure performance of a combination of a `` salt” string and a.... Он не особо требователен к ресурсам, у него удобный и хороший API для работы Apache... Choosing the right k6 vs jmeter for the k6 API is ( IMO ) simpler to use Beanshell Listener to generate report., we will still only have each single VU issue requests sequentially if the import worked or,. Is waaay nicer than in JMeter, using the most popular open source tool for the job can saved! In a silly question also shorter, and use somewhat more code regarding JMeter Properties usage, 100...