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Full Version: What causes large white space in the timeline?
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Hi Pat,

I've ran a few tests recently and I'm seeing unexpected dead time, white space, in the timeline.

Any ideas what may cause this?

This result Amsterdam Chrome shows it:

While this one, Paris Chrome doesn't:

Sometimes it can be rather extreme like this London IE8:


Hmm, usually it's script running or something else eating CPU but the Amsterdam CPU utilization wasn't an issue (looked to be a problem with London). The best bet is usually to capture a dev tools timeline which will tell you what Chrome is doing (option in the Chrome tab of advanced settings).

I re-ran amsterdam and it looks like Chrome is doing "Layout" but it doesn't really break it down more than that:
Thanks Pat
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