[Qt-qml] Qml WebView performance issues -- how to address?

[Ivan De Marino]

On 21 April 2010 02:00, <warwick.allison at nokia.com> wrote:

> > And, more important, the performances of QDeclarativeWebView are
> > inferior to QWebView.
>
> That's interesting, since QDeclarativeWebView is faster on some hardware,
> since it has an image cache (is the WebView.pixelCacheSize set large enough
> for your screen?). Unfortunately, the only advice I can give is to profile
> it.
>
I use "pixelCacheSize: 4000000" for the N900. Is that supposed to be enough?
I can give you some links where, while loading, everything get's completely
stuck.
- www.repubblica.it
- news.bbc.co.uk


> > What would be REALLY nice is that the rendering was done in a way that
> > would allow panning around while loading. The slowly-ness would be much
> > less perceived (like on iPhone).
>
> It is.
>
> WebView uses QWebPage, just as QWebView does, which is incremental.
>
Mmm, I'm confused. To me it doesn't seem like that. Performances on N900 HW
are not very good and I don't see the "loading by tiles" that I would
expect.
I'm using a build of branch "4.7-fremantle" done on the 2010-03-30. Is that
too much in the past?

Do you advice me to do a build of QtWebKit directly?


>
> --
> Warwick
>



-- 
Ivan De Marino | Software Engineer | France Telecom R&D UK - Orange Labs
w. +44 20 8849 5806 | m. +44 7515 955 861 | m. +44 7974 156 216
ivan[dot]demarino[at]orange-ftgroup.com |
ivan[dot]de[dot]marino[at]gmail[dot]com
www.detronizator.org | www.linkedin.com/in/ivandemarino
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