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2010-05-02T17:23:02.860
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2010-05-02T17:43:22.540
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<p>You could do a lot of things, I will just list them in order that will give you the best impact.</p> <ol> <li><code>FlexTable</code> is not meant for 300 rows. Since your table is so simple, you should consider generating the HTML by hand, and then using simple HTML widget. Also, 300 rows is <strong>a lot</strong> of information - consider using pagination. The <a href="http://gwt.google.com/samples/DynaTable/DynaTable.html" rel="noreferrer">DynaTable sample app</a> shows you how to do this.</li> <li>It looks like you are using one GWT module per page. That is the wrong approach to GWT. Loading a GWT module has some non-trivial cost. To understand what I mean, compare browser refresh on gmail v/s the refresh link that gmail provides. That is the same cost you pay when every page in your website has a distinct GWT module.</li> <li>If the list of candidates is needed across views, you can send it along with the HTML as a JSON object, and then use the <a href="http://code.google.com/webtoolkit/doc/latest/DevGuideI18n.html#DevGuideDynamicStringInternationalization" rel="noreferrer">Dictionary class</a> in GWT to read it. This saves you the RPC call that you are making. This approach is only recommended if the data is going to be useful across multiple views/screens (like logged in users info)</li> <li>Check how long your RPC method call is taking. You can enable <a href="http://code.google.com/webtoolkit/doc/latest/DevGuideLightweightMetrics.html" rel="noreferrer">stats in GWT</a> to figure out where your application is taking time. </li> <li>You can also run <a href="http://code.google.com/webtoolkit/speedtracer/" rel="noreferrer">Speed Tracer</a> to identify where the bottleneck is. This is last only because it is obvious FlexTable is performing a lot of DOM manipulations. In general, if you don't know where to start, Speed Tracer is a great tool.</li> </ol>
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