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Identify blocking or gap causing request
10-25-2018, 02:59 AM
Post: #1
Identify blocking or gap causing request
I'm running tests against a site with a lot of third party requests.
I see that often the doc ready is very slow (65 secs)
I'm trying to identify which request is causing this slowness, but I don't see any blocking requests higher up in the waterfall.

I have read the blocking might be caused by javascript execution. How do I identify which request is running javascript causing the blockage?

I've add a partial screen shot of the waterfall view, I can add the rest if it is useful.
thanks!

   
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10-25-2018, 08:39 PM
Post: #2
RE: Identify blocking or gap causing request
Performance tab of Chrome developer tools is what I'd use to debug this further but from this waterfall https://www.webpagetest.org/result/18102...view_step1 it looks like

1. https://b-code.liadm.com/a-01db.min.js looks like a candidate for an initial investigation - notice how it's JS execution extends to onload

2. I'd be tempted to take a close look at Optimizely too and maybe consider moving it so it loads sooner


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Andy

Using WebPageTest - http://usingwpt.com/
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