Tracy Spratt wrote: > > In my experience, the rendering of the UI is the bottleneck, not the > data transfer. > > Use timer and the result handler function to time the actual data > transfer. You ARE using a result handler, and not binding directly to > lastResult, right? > > Are your item renderers built on containers? If so, you need to move > to extending UIComponent instead. See Alex Harui’s blog for a full > explanation why, and for many examples. > > Tracy > > ------------------------------------------------------------------------ > > *From:* [email protected] [mailto:[EMAIL PROTECTED] > *On Behalf Of *j_lentzz > *Sent:* Friday, September 28, 2007 2:11 PM > *To:* [email protected] > *Subject:* [flexcoders] HTTPService Performance Issue - very slow > > Hi, > > I've got an app getting data from a server to populate a screen with > 3, text inputs, some radio buttons and a data grid. With some data, > it is taking almost a minute to save and refresh the scren. The data > grid seems to be the issue. It contains many comboboxes. I've read > that these are very slow if too many appear in a datagrid. I see the > last data leave the server and I have timer marks for when I start my > processing of the returned data (populating the arraycollection for > the datagrid - I'm using the default resultFormat of Object) to when > I'm done and just waiting on the screen to display it. The processing > time I'm getting from the timers is very low (1/2 sec or less). > However, I'm seeing the busy cursor staying on the screen for almost > the complete time I'm waiting. Once the busy cursor leaves, the > screen appears almost instantly with data. The docs say that the busy > cursor is displayed until the class completes loading data. So is the > bottleneck on the Flex side (the loading of the data from the > HTTPService) that I can't access? Or is my datagrid full of > comboboxes the issue, even though the busy cursor is staying on the > screen. > > Any guidance would be appreciated. > > Thanks, > > John > >
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