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https://issues.apache.org/jira/browse/CB-9346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebastien Lorber closed CB-9346.
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Resolution: Not A Problem
Sorry I'm closing this issue as it is not a problem with Cordova.
Actually the CSS height differences related to the doctype are related to the
speed of my app, because instead of having divs of 600px i have some of 50000px.
Adding a doctype to the mobile website make the mobile browser as slow as the
cordova app, as expected
> Cordova index.html doctype has huge Android performance impact
> --------------------------------------------------------------
>
> Key: CB-9346
> URL: https://issues.apache.org/jira/browse/CB-9346
> Project: Apache Cordova
> Issue Type: Bug
> Components: Android
> Affects Versions: 4.0.0
> Environment: Nexus4 (4.4.3), SKD22, minTarget=16, target=22, Ubuntu
> 12.04, cordova-cli=5.1.1
> Reporter: Sebastien Lorber
>
> Hi,
> This is another case were the exact same app, running on the same device, is
> slower in webview than in mobile browser.
> In my company we have a mobile website, that runs fine in mobile web browser.
> We started to port it to a cordova/phonegap application so that is runs in
> webview and is available in Android/iOS stores.
> So I'm trying to run for some days the app in a Cordova shell. It works, but
> is really is a lot slower than using the mobile browser.
> As far as I know, I run 4.4.3 version of Android so it's supposed to use new
> Chromium-based webviews that are faster than former android webviews.
> According to readings on the internet, I tried many things, including
> changing the hardwareAccelerated true/false, updating the min/target SDK, or
> even using the Crosswalk plugin. None of these had a significant effect.
> Also I noticed some little CSS bugs in the Cordova version compared to the
> mobile version, like a scrollable container that did not have the appropriate
> height... I finally figured out that we were using `<!DOCTYPE html>` on the
> Cordova index.html while we were not in the html served for mobile browsers.
> So I tried to remove the <!DOCTYPE html> from the index.html of Cordova,
> primarily to fix the CSS bug
> (http://stackoverflow.com/questions/1966300/height-100-is-not-working-in-html-when-using-doctype-how-i-can-fix-this)
> After removing the doctype, it solved the CSS bug, but also solved the
> performance issue!
> Can someone explain why this doctype has any impact on performances? Is it a
> Cordova bug?
> I can notice that the doctype is included in all Phonegap examples I've seen
> so far. Is it really required? And what can be the impact of removing this
> doctype?
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