Puppeteer performance

Improving Puppeteer Performance · browserless docs, One of the things that stands out when using a headless browser (versus cURL or other simpler tools) is that it can be painfully slow. Some of  One of the things that stands out when using a headless browser (versus cURL or other simpler tools) is that it can be painfully slow. Some of the cost is unavoidable -- you'll have to start the browser, wait for it to initialize, and then proceed from there. This is even harder in platforms that offer functions-as-a-service as there's a warming phase plus the fact that you cannot cache any

Test website performance with Puppeteer, The output should be the same as running window.performance.timing in the browser console. index.js. const puppeteer = require(  Managing puppeteer for memory and performance. 0. Puppeteer performance leaks. Hot Network Questions Cat glove carrying behavior

Web Performance Recipes With Puppeteer, Hi, OS:OSX 10.14.3 Puppeteer: 1.12.2 Node: 10.14.2 I'm facing major performance degrade from headless false to true. My site is simple video  Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. It can also be configured to use full (non-headless) Chrome or Chromium. It can also be configured to use full (non-headless) Chrome or Chromium.

Headless chrome

Getting Started with Headless Chrome | Web, Headless Chromium allows running Chromium in a headless/server environment​. Start a normal Chrome binary with the --headless command line flag  Chrome Headless is “Chrome without Chrome,” in the words of Chrome developer and engineer Eric Bidelman. It’s the functionality of Chrome, but operated from the computer’s command line. That’s what’s meant by a “headless browser,” which makes now a good time to answer: What is a headless browser?

Automated testing with Headless Chrome | Web, Headless mode is a functionality that allows the execution of a full version of the latest Chrome browser while controlling it programmatically. It  Headless Chrome is a way to run the Chrome browser in a headless environment without the full browser UI. One of the benefits of using Headless Chrome (as opposed to testing directly in Node) is

Headless Chromium, Puppeteer runs headless by default, but can be configured to run full (non-​headless) Chrome or Chromium. What can I do? Most things that you can do manually  Headless mode is a functionality that allows the execution of a full version of the latest Chrome browser while controlling it programmatically. It can be used on servers without dedicated graphics or display, meaning that it runs without its “head”, the Graphical User Interface (GUI).

Selenium chrome high cpu

Selenium chrome high cpu, Selenium chrome high cpu. We also monitor the overall system CPU and memory usage, using the. " This is due to processes such as the Google Chrome​  @DebanjanB yes, whenever users start using chrome headless memory and cpu become very high. – Ahmad Hijazi Jun 5 '18 at 15:16 I too have large memory usage with running selenium tests with google-chrome-headless.

Limit chrome headless CPU and memory usage, @DebanjanB yes, whenever users start using chrome headless memory and cpu become very high. – Ahmad Hijazi Jun 5 '18 at 15:16. Google Chrome is one of the most popular browsers in the world. In general, Chrome runs fast and doesn't consume too much computer resources. However, you may notice that your Chrome is using too much CPU while running on your computer.

Issue 6888 in selenium: high CPU usage when chromedriver is , Issue 6888 in selenium: high CPU usage when chromedriver is 1. using selenium to automate a chrome browser in Ubuntu 13.10, login to It may be a virus on your computer taking up all your CPU and eating away on your chrome. So make sure to have your computer checked on if it has a virus or not.

Puppeteer tracing

How to start with Puppeteer and HTTP tracing, A simple step by step guide on how to start with Puppeteer and create a short HTTP tracing, which is logging all the web browser interactions:  Puppeteer has event-driven architecture, which removes a lot of potential flakiness. There’s no need for evil “sleep(1000)” calls in puppeteer scripts. Puppeteer runs headless by default, which makes it fast to run. Puppeteer v1.5.0 also exposes browser contexts, making it possible to efficiently parallelize test execution.

Puppeteer API, Please give us a few seconds to download Puppeteer releases for the first time. Next time we'll do it in background. Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. It can also be configured to use full (non-headless) Chrome or Chromium. It can also be configured to use full (non-headless) Chrome or Chromium.

Puppeteer, (async () => { const browser = await puppeteer.launch() const page = await browser.newPage() await page.tracing.start({path: 'trace.json', categories:  Puppeteer is very useful for several task types on the web (crawling, testing, debugging, scrapping, automation..Etc) The Puppeteer API is kind of simple to understand and to get started with (Good job team) Headless Browser automation is a must learn thing for SEOs, developers, and marketing crew; Useful links :

Puppeteer authentication

Puppeteer Quick Tip: How to do Basic Authentication, Here is the example of Puppeteer to handle HTTP Basic Authentication. const puppeteer = require('puppeteer');  Above code will run Puppeteer on headful mode and on the last part I comment the await browser.close() to see the browser in action. The key is this code. It will set Pupeeteer to handle the basic authentication on a website.

How to log in to a website using Puppeteer · Apify, Passing through authentication. How to How you can sign in to Facebook using headless Chrome / Puppeteer In this article, we demonstrate how you can easily scrape data from a page behind a login using an Apify actor with Puppeteer. I am looking for a solution to handle basic authentication popup (with puppeteer=5.2.1). My scenario is as below. 1. Launch an application 2. Click on a button on the home page 3. It opens a new window (saml) which ask us to enter email In new window, 4. Enter email 5. click on Next button 6.

page.authenticate blank page · Issue #3143 · puppeteer/puppeteer , Steps to reproduce Puppeteer version: 1.7.0 Platform / OS version: Windows Server 2016 Standard URLs (if applicable): Node.js version:  Edit (2018–01–09): A few people pointed out that Puppeteer has a new function called page.authenticate () which internally uses the CDP’s AuthChallengeResponse object to pass credentials to Chrome login dialog. Indeed, this approach seems to work, although one might think of situations where the function will not be adequate.

Puppeteer memory leak

Memory leak with puppeteer · Issue #4831 · puppeteer/puppeteer , Tell us about your environment: Puppeteer version: Latest Platform / OS version: Windows 10 URLs (if applicable): any Node.js version: v8.11.2  Automatically detect memory leaks with Puppeteer Jun 8, 2019. About half a year ago Bronley Plumb kindly made me aware of a memory leak in one of my open-source packages. To see this memory leak in action it was necessary to open a browser and its dev tools to execute some manual steps. On top of that, the memory had to be inspected manually.

Chrome memory leak · Issue #5893 · puppeteer/puppeteer · GitHub, Tell us about your environment: Puppeteer version: 2.1.1 Platform / OS version: Docker / node:12.16.1-alpine URLs (if applicable): None  Use emitter.setMaxListeners() to increase limit (node:5618) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 unpipe listeners added. Use emitter.setMaxListeners() to increase limit (node:5618) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 drain listeners added.

BrowserContext has a memory leak perhaps. · Issue #4684 , Puppeteer version: 1.17.0; Platform / OS version: Mac OS 10.14.5; URLs (if applicable): no need; Node.js version: v9.6.1. A really easy way to create a memory leak is by using Ruby global variables or class variables (which are, effectively, pretty close to the same thing). Class variables aren’t quite as obviously dangerous as global variables, so we’ll use one of those in our example. Edit your oomer.rb file to look like this:

Puppeteer-examples

checkly/puppeteer-examples: Puppeteer example scripts , Use case-driven examples for using Puppeteer and headless chrome - puppeteer/examples. Puppeteer examples. Deprecation notice: We are moving our efforts to theheadless.dev, a new free & open source knowledge base for Puppeteer AND Playwright. Idea is the same: practical examples and guides, by the community. We — the team at Checkly — are going to pour a lot of love & care into this new project. Feel free to contribute!

puppeteer/examples: Use case-driven examples for using , is a person who manipulates an inanimate object, called a puppet, to create the illusion that the puppet is alive. The puppet is often shaped like a human, animal, or legendary creature. Useful Puppeteer demos! Examples for using Puppeteer to do big, bold things.. Output from some of the examples: code_coverage.js. Test lazy loading strategy by seeing CSS/JS code coverage usage across page load.

Examples, runs headless Chrome or Chromium instances by default, which is why they're always mentioned in tandem. puppeteer-examples - Puppeteer Headless Chrome examples for real life use cases such as getting useful info from the web pages or common login scenarios. browserless - Headless Chrome as a service

Puppeteer cleanup

Zombie Process problem. · Issue #1825 · puppeteer/puppeteer , Environment: Puppeteer Version: 1.0. Chrome In my case, it looks like it does not have anything to do with the browser cleanup process. DPK Cleanup Process # The DPK uses a process called “cleanup” to remove installed software and domains. The cleanup process uses Puppet to delete installed files and folders. You can run the cleanup process two ways:

Puppeteer spawns a runaway amount of Chromium instances , Run the Puppeteer script in a single Chromium instance. Then close the Chromium process when browser.close() is called. What happens  How to Completely Uninstall Puppet 1. Go to Control Panel -> Programs -> Programs and Features, highlight the entries for Puppet and select Uninstall. 2. Go to C:\Program Files\Puppet Labs and delete it. 3. Delete the Windows Registry for Puppet: HKEY_LOCAL_MACHINE -> SOFTWARE -> Wow6432Node ->

puppeteer/puppeteer, Run custom cleanup code on process crash (I know puppeteer runs some cleanup, but I want to run more). Track process resource use; Force  On a windows machine, I am occasionally receiving an exception during the file cleanup process in Launcher.js on line 87 for version 0.9.0. This is causing the temp files to remain in their directories.

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