Slow expanding (big number of rows + several levels)

[Tino]

Hello everybody,

I’m having an issue when expanding a node using DHTMLXTreeGrid : the expanding can be really slow (over ten seconds when expanding one element).

The issue occurs only when i have a big amount of levels and/or some levels + big amount of rows.

For example: If I have over 1000 rows + 4 levels, expanding an element will take more than 10 secs.

I read some things about “dynamic loading” but I don’t get if it will help me and how to use it with my configuration.

PS: I’m using the treeGrid to be able to use multi-grouping.

My configuration :

Version : 3.6
Using : Java (array created in JSON)

Tell me if some details are missing.
I can’t give a example of my problem. Sorry for this

Thanks in advance !

[sematik]

In your case it is recommended to use the dynamic loading of the child nodes:
docs.dhtmlx.com/treegrid__manipu … intreegrid
and a smart rendering:
docs.dhtmlx.com/api__link__dhtml … ering.html
or a smart parsing mode:
docs.dhtmlx.com/treegrid__manipu … intreegrid
It will increase the performance of your treegrid.

[Tino]

Thanks a lot for the quick reply.

I also add that the speed of expanding is also related to the number of columns (over 20 in my case)

I will try to use the dynamic loading because the other arguments don’t seem to be enough.
I don’t get what it changes though if I already loaded all datas.

Must i put xmlkids =“1” for each node or only the last level ?
What should I put in the “xxx” when giving the “parent” attribute ?
How does it work with json?

Thanks

[Tino]

Update: The issue has been fixed by removing the attachEvent “onOpenEnd”.

The time was long even though the function called was empty.
I could find a workaround to do what I needed to do with this event.

Thanks a lot for everything