Empty Load Times

Hi guys, I have been testing my page and keep encountering this issue. Is this a bug from webpagetest or what does it mean?

There are periods of time where by there is no activity when loading the page as shown in the picture.


In cases like that your best bet is to test with Chrome and enable the timeline capture (in the Chrome tab in the advanced settings). That will show if there is javascript activity or something else that is running in the gaps.