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https://issues.apache.org/jira/browse/FLEX-34260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Spicer updated FLEX-34260:
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Attachment: ItemRendererCachingBug.fxp
> s:datagrid cacheAsBitmap caches an itemRenderer for 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 4.11.0, Apache Flex 4.12.0
> Environment: Windows 7, FB 4.7, ie10
> Reporter: Jeff Spicer
> Attachments: ItemRendererCachingBug.fxp
>
>
> 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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