[4.x] Serious performance issues under IE 8

[ykey]

That Dashboard example is also much more snappier in 4.0.1 in IE 8 than in 4.0.2. ?_?

[Justin Noel]

@SebTardif - In IE7, 4.0.1 is faster than 4.0.2 as well.

[blakel]

Please see my thread at http://www.sencha.com/forum/showthre...ormance-vs-3.4 for an example of very bad performance in IE8 when using Ext.tab.Panel.

[ext-spring-mvc]

Please see my thread at http://www.sencha.com/forum/showthre...ormance-vs-3.4 for an example of very bad performance in IE8 when using Ext.tab.Panel.

extjs 4 has really bad performance on automatically size management. a simple profiling I just did in SeaMonkey with firebug shows that over 19% time on getViewSize() function, overall 19+14+9+5 = 47% from getViewSize() getHeight(), getStyle(), getWidth().

all I did is:
load the home page, switch tab panel and resize browser window



few days back, i read someone on this forum suggesting put fixed height and width on all containers to reduce the autosize effort. I will try it when I have time.

[ext-spring-mvc]

extjs 4 has really bad performance on automatically size management. a simple profiling I just did in SeaMonkey with firebug shows that over 19% time on getViewSize() function, overall 19+14+9+5 = 47% from getViewSize() getHeight(), getStyle(), getWidth().

all I did is:
load the home page, switch tab panel and resize browser window



few days back, i read someone on this forum suggesting put fixed height and width on all containers to reduce the autosize effort. I will try it when I have time.

btw, did I mention that 4.0.2 improve the initial loading time of my app from 40s (4.0.1) to below 20s (4.0.2). THANK YOU!

[Nickname]

ExtJs4.0.2a is out and a diff on ext-all-debug.js lead to the assumption, thats a performance release (no release-notes.html update). The changes are all on tablepanel, abstractontainer, Panel ..

[paipai]

There are several posts about bad performances. This is very difficult to read all posts.
Is there something to tracks bug and to know when there is an official answer, patch or anything may help us to make a demo of our apps with IE ?

[ext-spring-mvc]

ExtJs4.0.2a is out and a diff on ext-all-debug.js lead to the assumption, thats a performance release (no release-notes.html update). The changes are all on tablepanel, abstractontainer, Panel ..

wow, sencha didn't publish the alpha release in blog or forum. and why alpha comes after commercial release without "a"?

anyway, just try it with my ongoing project, the home page loading still take about 20 seconds. unacceptable.

[stevil]

There are several posts about bad performances. This is very difficult to read all posts.
Is there something to tracks bug and to know when there is an official answer, patch or anything may help us to make a demo of our apps with IE ?

That has been requested by a number of us. Unfortunately, I doubt we'll get anything like that (bug tracker) at this point in the cycle, if at all.

stevil

[MrSparks]

Update for 4.1 Pr1

Big improvement over the initial 4.0.0 release. (Well done Sencha Dev!)

IE8 : There still quite a way to go on IE8, thats currently 2.5 times slower under 4.1 pr1 than it was under 3.3.1

Chrome : Approximately 0.7 times slower under 4.1 pr1 than it was under 3.3.1

FF : Good news here, running approximately 0.7 times faster under 4.1 pr1 than it was under 3.3.1

Opera : Approximately 0.2 times slower under 4.1 pr1 than it was under 3.3.1

Here's a break down of the numbers. (image attached)

Best Mr Sparks