[TIMOB-23637] Windows: Titanium object creation takes too long

GitHub Issue	n/a
Type	Improvement
Priority	High
Status	Closed
Resolution	Fixed
Resolution Date	2016-07-21T13:25:32.000+0000
Affected Version/s	Release 5.4.0
Fix Version/s	Release 6.0.0
Components	Windows
Labels	n/a
Reporter	Kota Iguchi
Assignee	Kota Iguchi
Created	2016-07-14T12:01:41.000+0000
Updated	2016-10-20T15:46:18.000+0000

Description

I recently found that one the performance bottleneck of Titanium Windows is occurs during object creation (Ti.createXXX etc). On my Lumia 630 I observed it takes almost 1 second to create 100 proxy object, and it can be serious issue especially on app startup because Windows Phone tend to kill the app when app startup takes too long. *Sample code*

var start = +new Date();
for (var i = 0; i < 100; i++) {
    var obj = Ti.createBuffer({length: 2});
}
alert((+new Date() - start) + ' msec');

var start = +new Date();
for (var i = 0; i < 100; i++) {
    var obj = Ti.UI.createLabel({text:'test ' + i});
}
alert((+new Date() - start) + ' msec');

Comments

Kota Iguchi 2016-07-20

https://github.com/appcelerator/titanium_mobile_windows/pull/779 We have observed this saves over 70% of time. - Ti SDK 6.0.0.v20160714010528 ... 5.5 sec - Ti SDK 6.0.0.v20160714010528 with this update ... 1.7 sec

   var win = Ti.UI.createWindow({ backgroundColor: 'green' });
   var data = [];
   
   var start = +new Date();
   for (var i = 0; i < 100; i++) {
       var task = {
           Id: i,
           Title: 'Row ' + i,
           Data: 'Data ' + i
       };
       var tvr = Ti.UI.createTableViewRow({
           height: 70,
           taskId: task.Id
       });
       tvr.add(Ti.UI.createLabel({
           text: task.Title,
           color: "#000",
           top: 5,
           left: 20
       }));
       tvr.add(Ti.UI.createLabel({
           text: task.Data,
           color: "#000",
           top: 30,
           left: 20,
           font: {
               fontSize: 12
           }
       }));
       data.push(tvr);
   }
   
   var table = Ti.UI.createTableView({data: data});
   
   table.addEventListener('click', function (e) {
       alert(e.row.taskId)
   });
   
   alert('Total: ' + (+new Date() - start));
   
   win.add(table);
   win.open();

Ewan Harris 2016-10-20

Verified using: OS: Microsoft Windows 10 Pro 10.0.14393 Appc core: 6.0.0-62 Appc NPM: 4.2.8-9 Ti SDK: 6.0.0.v20161019091022 Appc Studio: 4.8.0.201610171310 Lumia 550 10.0 Lumia 520 8.1 Performance of titanium object creation has been improved Closing ticket

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