What is "get length" shown in Chrome's profiler as major time sink?
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I have a large web page (internal, in development) that is taking too long to load. Specifically, loading the 2.3MB HTML page shows the styled content in ~3s, and then the browser locks up for over 20s before becoming interactive.

Using Chrome's Timeline I can see that this is all due to script being kicked off as part of the `load` event:
[![Timeline view with 30s of "Scripting" due to Event(load)][1]][1]

However, when I profile the page load I see this (click for full size):
[![Profile][2]][2]

32.01 seconds are spent in some anonymous function with no associated source code. As part of that, 18.87 seconds are spent in the function "get length" (which also has no associated source code).

What is `get length`? Is there no better information available from the profiler about where time is being spent?

  [1]: http://i.stack.imgur.com/bH4hH.png
  [2]: http://i.stack.imgur.com/4zDSF.png