Advanced data grid memory leak issues

Question

Steps to reproduce:
1. create an hierarchical xml as per the adobe live docs
2. load this in to your flex app with http service (e4x)
using hierarchical data as data provider eg
mydata = new HierarchicalData(root.item);
mydata.childrenField = "child" ;
3. use a refresh button to reload the data
Actual Results: system memory increases unlimited.
Expected Results: system memory levels out as is with the
normal datagrid
I have made a test application that demonstrates the issue
reported i hope it will help you resolve the issue.
The proplem is particularly apparent with larger data sets
and frequent data refreshes as with our application currently in
production. The application should run in a webserver environment.
For local file system use you might have to change the permissions.
I did some further tests and the problem only occurs if the
"displayItemsExpanded" property of the advanced datagrid is set to
true.
Regards,
Michel Durieux
this bug is filed under
http://bugs.adobe.com/jira/browse/FLEXDMV-1750

Answer 1

I have a data grid getting streaming quote data (for a trading
application we are building in Flex). I get at least an update per
symbol and the user can typically have anywhere from 20 symbols to 50
symbols on the grid -
so my test case, is i have 30 symbols in the data grid and each of
them get an update / second (4 or 5 columns in the grid get updated)
- so i find the index of the symbol who row needs to get updated and
update those fields (also update the corresponding data source to
handle other scenarios) ...
let me know if you need any other info ?
2009/5/10 Michael Borbor <[email protected]>:
Hi there could you post your project test case? I assume you're ussing an ArrayCollection as the dataProvider, tests have been made and when dealing with very large amount of data the inner workings of the AC can perform up to 20 times worse than an Array due to binding mechanisms.
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