Why does wkwebview run slower in cordova compare to mobile safari?

1
votes

I've built an app using famo.us which runs very nicely in the native ios 8 browser and also this app: https://itunes.apple.com/us/app/webview-wkwebview-uiwebview/id928647773?mt=8

The app in the link allows you to test the performance in both UIWebView and WKWebView.

I've noticed after profiling in instruments that my app uses about 30-40% more cpu in cordova than when running in the app above. I have tried using both UIWebView and the experimental WKWebView plugin from Telerik. I have even tried pointing cordova directly to a webserver with the contents of my app.

No matter what I strip out or try, my app runs considerably slower in cordova. If cordova and the app store app use the same webviews (presumably), why would the former consume so much more cpu?

Any insight into where the overhead is in cordova would be greatly appreciated.

Thanks!

1
ioscordovafamo.uswkwebview

1 Answers

0
votes

We've found that adding a (almost hidden) UIToolbar to the cordova project (to the MainController.view) improves performance. Strange but true...