Gotlifebar / gwtquery-plugins

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Slow response in production mode #45

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago
What steps will reproduce the problem?
1. Drag and drop a label (text only) onto a celltree
2. The celltree should have a lot of elements
3. When the user just enters into the droppable area the system freezes for a 
few seconds (could be 5 secs). The browser cannot respond to any event, it 
seems like the browser crashed

What is the expected output? What do you see instead?
It is expected that the drag and drop operation could be slower since we have a 
lot of nodes but the fact that it becomes frozen is not good.

What version of the product are you using? On what operating system?
O/S: Win XP and Win 7

With IE 6 behaves better.
With IE 8 not at all.
With IE 9 is a little bit better than 8.
With FF is much faster that the IE and generally there is no problem.

Please provide any additional information below.

The onHover method is lightweight and does not have any for loop or other time 
consuming processing.

The problem starts when the user starts to enter the area of the cell tree.

Library version used:gquery-dnd-bundle-1.0.6

Typical tree in my application contains: 4 to 5 levels of elements and the 
total number could be 100 to 200.

Any suggestion what to check or test?
Thank you in advance

Original issue reported on code.google.com by kklearc...@gmail.com on 17 Dec 2012 at 10:43