system memory usage increase surprisingly with headless chrome

Steps to reproduce

Tell us about your environment:

• Puppeteer version: puppeteer@1.6.1
• Platform / OS version: Linux/CentOS 7.5.1804
• Node.js version: v8.11.3

What steps will reproduce the problem?

Please include code that reproduces the issue.

1.launch 16 chromes 2.160 node processes connect 16 chromes randomly, so, 10 node process connect/ per chrome 3.every node process:

(async() => {
    const browser = await puppeteer.connect({
        browserWSEndpoint: browseradd,
        ignoreHTTPSErrors: true,
    });
    const page = await browser.newPage();
    await page.goto(url,{timeout: 12000}).then( (value) => {
    }).catch( (error) => {
    });
    rlt['content'] = await page.content();
    console.log(JSON.stringify(rlt));
    page.close();
   process.exit();
})();

system memory usage increase surprisingly with time goes by. Only kill the main process can solve the problem

[aslushnikov]

Are you suggesting to reuse browser object to save memory?

Definitely. Three thigns:

• Browser instance should be re-used
• Browser contexts should be re-created
• Total amount of simultaneous browser contexts should be constrained with some reasonable number

[aslushnikov]

@lexy0093 Two things:

1. await page.close so that you have a fine control on the amount of opened pages
2. try using browser context per new page.