Hi Michael, Sorry, I didn't understand from your email if you think it's normal that memory usage goes up 10 Mb by just importing WebKit without using it ?
What I mean is: does it look like an issue that should be investigated, or should we just shrug and move on? :) Thanks Greg On Tue, Dec 14, 2010 at 12:52 PM, <michael.bras...@nokia.com> wrote: > Hi Greg, > > On 10/12/2010, at 4:52 PM, ext Gregory Schlomoff wrote: > > Hi Michael, > > Somme additional figures: > > 1. Empty Rectangle, not importing QtWebkit: ~ 3MB > 2. Empty Rectangle, importing QtWebkit: ~ 13MB > 3. Rectangle with an empty WebView: ~ 14 MB > 4. Setting url: "about:blank" in the WebView: ~15 MB > 5. Setting url: "http://www.google.com/": ~19 MB (and a repaint bug: > webview displays a checkered background, and I have to resize the window a > little bit to make it actually paint the page.) > > > Okay, thanks for sharing these. They are in the ballpark of what I would > have expected based on prior observation, though I am definitely not a > webkit expert. If you want to dig more, you could try comparing with > QWebView or QGraphicsWebView (QML WebView memory usage should be identical > to QGraphicsWebView with QWebSettings::TiledBackingStoreEnabled set (which > does increase memory usage because of the pixmap caching)). Maybe someone > familiar with QtWebKit can provide more information, or say whether there > are any ways to tweak the memory usage? > > You can track the repaint bug (I think they are the same) at > https://bugs.webkit.org/show_bug.cgi?id=50222. > > Regards, > Michael > > All tests on windows 7 64-bits, running qmlviewer.exe built from the 4.7.0 > branch on Oct, 6. > > Thanks, > > Greg > > On Fri, Dec 10, 2010 at 12:12 PM, <michael.bras...@nokia.com> wrote: > >> Hi Greg, >> >> From what I remember 10MB for the "base" usage of webkit sounds about >> right, though I didn't realize that just an import statement would add this >> cost. Did you try any other configurations? e.g. did adding an empty WebView >> cause the memory to go up or was it still around 13MB? >> >> Regards, >> Michael >> >> On 30/11/2010, at 6:48 PM, ext Gregory Schlomoff wrote: >> >> > Hello, >> > >> > One simple observation. Launching the following code in qmlviewer.exe, >> > I get a memory usage of aroung 3 megabytes: >> > ----------------------- >> > import QtQuick 1.0 >> > >> > Rectangle { >> > width: 200 >> > height: 200 >> > } >> > ------------------------ >> > >> > Now, with the following code, memory usage jumps to 13 megabytes. I'm >> > not instantiating any WebView element, just importing QtWebkit. >> > ----------------------- >> > import QtQuick 1.0 >> > import QtWebKit 1.0 >> > >> > Rectangle { >> > width: 200 >> > height: 200 >> > } >> > ------------------------ >> > >> > Is that normal? Would someone care to explain what the import >> > statement is doing that is adding 10 mb of memory consumption? >> > >> > Thanks >> > >> > Greg >> > _______________________________________________ >> > Qt-qml mailing list >> > Qt-qml@trolltech.com >> > http://lists.trolltech.com/mailman/listinfo/qt-qml >> >> > >
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