Before we saw how to create a Waterfall chart with Firebug, we discussed the four broad categories of bottlenecks that slow down page loading:
.aspxfile taking too long to generate
.aspxfile taking too long to load
The following sections show how each broad category expresses itself in a Waterfall chart generated by Firebug. Each section also refers you to the chapter where you'll see how to further pinpoint the bottleneck and then fix it.
In the chart below, the top line is for the main
.aspx page. The purple section shows how long the browser waited ...