Sorry for late answer.
Thanks for your answer Alex Harui.
I now have other computers which have the same problem, with different
hardware.
To be more accurate :
- the datagrid uses different ItemRender for columns and they are
dynamically modified with the data.
(depending of the data, the 1st column can display a checkbox, the
2nd a textinput, the 3rd an image, etc)
- i made a test : i remove every itemRenderer and I let the datagrid
with default column, and the scroll is fluid. Like other computer.
- i used the profiler and saw that there is a memory leak when I scroll
on the datagrid with the itemRenderers enabled.
it seems that new Itemrenderer are created when I scroll, and the old
ones are not freed.
I found this article :
http://www.frishy.com/2012/02/mis-using-itemrendererfunction-and-memory-leaks/
I modified the "new ClassFactory()" as adviced but it doesn't resolve
the problem.
Do you think it can be resolved by using an "universal" ItemRenderer
which has a Combobox, a CheckBox, and Image etc and display only what
necessary ?
Or do you have any other advices ?
Thanks for help !
Le 24/02/2016 16:49, Alex Harui a écrit :
Try running a performance profiler (either Adobe Scout or Adobe Flash
Builder) and compare output on the slow vs fast machines.
Also, think about differences, even small ones:
-Are both fast and slow computers running Win10?
-Are both using the same anti-virus memory scanners?
-Is the actual size of the DG's columns and rows exactly the same number
of pixels?
-Is the slower computer using a higher-resolution display?
All of the above can contribute to the problem. I even saw one case where
the newer computer was running a different Windows theme so the browser
chrome was a couple of pixels smaller which made the DG column a couple of
pixels wider which made the text flow work harder trying to compute the
line breaks.
-Alex
On 2/24/16, 6:15 AM, "Julien Desquenne" <jdesque...@polyedre.fr> wrote:
Hello,
I have a AIR performance problem on Yoga3 computer (Intel core i5-5200U,
Nvidia GeForce 940M / Intel Graphics HD 5500, Samsung SSD PM851 256 Go,
8Go Ram, Windows 10)
When I'm scrolling on a Datagrid, the renderer takes about 1 or 2
seconds to scroll, whereas it's immediate on other computers (even 5-8
years old computers)
I tried lot of graphics settings (disable Intel HD Graphics, every
settings on high performance) but still this scrolling bad performance.
Any ideas / experience to share ?
Does it exist AIR benchmarks tests ?
Thanks for your help
