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From OmPrakash Muppirala <bigosma...@gmail.com>
Subject RE: Next release of Apache Flex
Date Tue, 24 Sep 2013 02:00:42 GMT
On Sep 23, 2013 6:47 PM, "Jack Yu" <jyu@appcomputing.com> wrote:
>
> Hi Justin,
>
> we use mx:DG, and have tried on flex 4.10
>
> The issue we have is that there are a large amount of cells in datagrid,
> over 1,000, and there are a lot of metadata associated with each cell,
like
> display color, font style, number format, borders, alignments, etc...
>
> in a single threaded rendering, it is taking too much time to render cell
by
> cell sequentially...
>
> We have been trying to optimize the rendering, but has reach the limit,
> where the viable solution is to have multi-threaded rendering, so that all
> the cells can be split into groups and rendered concurrently via multiple
> threads.
>
> This is a very typical problem for financial application where datagrid
> needs to handle a massive amount of cell data.
>
> I have already filed a feature request to Adobe Flash Player team to
support
> multi-threaded datagrid.
>
> We also need this multi-threaded component from flex sdk.
>
> Thanks
> Jack

Can you work on a prototype to flesh out this concept a bit further?  Multi
threaded datagrid sounds a bit too generic.

Also, maybe you could try it out with the spark datagrid to see if the
performance is acceptable for you?

Thanks,
Om

>
> -----Original Message-----
> From: Justin Mclean [mailto:justin@classsoftware.com]
> Sent: Monday, September 23, 2013 12:22 AM
> To: dev@flex.apache.org
> Subject: Re: Next release of Apache Flex
>
> Hi,
>
> > if the spreadsheet has 4 or 5 years financial data, the rendering of
> > those large amount of cell data can take time, and make the
> > spreadsheet not really responsive to cell scrolling...
>
> What version of Flex is it compiled with? Apache Flex 4.10? Have the tired
> the latest nightly build to see if there been any speed improvements post
> Apache Flex 4.10? There have been several speed improvements added to
> Datagrids in recent history.
>
> What version of the DG is it using the mx:ADG, mx:DG or s:DG one?
>
> Have you run it though Scout after compiling with the advanced-telemetry
> flag to see where the bottlenecks are? You may find it's not cell
rendering.
>
> Thanks,
> Justin
>

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