Jeff Spicer created FLEX-34260:
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Summary: spark datagrid cacheAsBitmap caches every item in the
dataProvider
Key: FLEX-34260
URL: https://issues.apache.org/jira/browse/FLEX-34260
Project: Apache Flex
Issue Type: Bug
Components: Spark: DataGrid
Affects Versions: Apache Flex 4.12.0, Apache Flex 4.11.0
Environment: Windows 7, FB 4.7, ie10
Reporter: Jeff Spicer
setting cacheAsBitmap to true on a spark dataGrid allocates a lot of memory,
noticeably when the dataProvider is long.
My guess is it's allocating enough memory to cache an itemRenderer for each
item in the dataprovider, whether it's showing or not.
Steps to reproduce:
1. create a spark dataGrid which has a dataProvider of length 1000
2. set cacheAsBitmap to true
3. run and profile memory usage
a dataprovider of length 10,000 shows no significant spike in memory, using sdk
4.6.
in 4.11/12, 10,000 items can cause !GCOD
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