Re: [Interest] Performance of Qt scripting on iOS

2015-07-14 Thread Thiago Macieira
On Tuesday 14 July 2015 20:34:21 John C. Turnbull wrote: > It's well known that iOS does not support executable memory which means that > any scripting language would not be able to use a JIT compiler. > > Given this, wouldn't it mean that Qt's JavaScript implementation would run > like a one legg

Re: [Interest] Performance of Qt scripting on iOS

2015-07-14 Thread Jason H
That would be a technical case, not a business one. > Sent: Tuesday, July 14, 2015 at 7:11 AM > From: "Robert Iakobashvili" > To: "Gian Maxera" > Cc: "interest@qt-project.org" > Subject: Re: [Interest] Performance of Qt scripting on iOS > > N

Re: [Interest] Performance of Qt scripting on iOS

2015-07-14 Thread Robert Iakobashvili
Not about JS/QML performance, but my Qt widget-based apps on iOS are very fast where long operations on new iOS devices are about twice faster (average for several long operations) than on latest Android devices of the same class. Note, that the same apps on iPad Air-2 is about 10 times faster tha

Re: [Interest] Performance of Qt scripting on iOS

2015-07-14 Thread Gian Maxera
Yes … that’s the reason. Of course having only a dual core does not help. To avoid bad user experience, I wrap the delegates into Loader items, or the whole view into a Loader, and I create a fast overlay displaying a “Loading” message that disappear when the Loader complete to load everything.

Re: [Interest] Performance of Qt scripting on iOS

2015-07-14 Thread Nuno Santos
Is that the reason for the sluggish performance of Qml delegate instantiation? My app runs awesomely on Android but no on iOS. Specially regarding ListView delegate installation process. It completely hangs. I have always thought that the main reason was the fact that the Android device is a qua