[Webkit-unassigned] [Bug 184143] New: [WPE] Complex Domtree (incl css) & memory consumption?

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=184143

            Bug ID: 184143
           Summary: [WPE] Complex Domtree (incl css) & memory consumption?
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: w.vanhauwaert at televic.com
                CC: beidson at apple.com

If I try to run following webpage on my NXP imx6-platform with 1GB, whether on wayland backend or on viv_imx6-backend, WebProcess gives me a huge memory drop (till 0MB free) until it crashes. This happens on the WPEWebkit fork, as on the Webkit 2.20 WPE platform. Sometimes it works, and then the memory gets back to normal. So it looks that only during build-up, memory drops. On https://pastebin.com/jaLFZFMp, you'll find a dump of the memory behaviour of the webprocess.
Demo page where I have the behaviour: http://woutervh.html-5.me The page is normally generated by angular, which explains the huge domtree. (looks ugly, I know). 
What is happening here?

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