We are a third-party script provider, and we work with a lot of customers across various verticals. One of our customers in the retail space recently noticed that a particular page had performance problems, that on the face of it pointed to our script as the cause. This confused us because of the non-blocking/SPOFing nature of our script, but we take these performance complaints seriously, so we started our investigation to find the root cause of the problem.
We went through a series of tools including our own RUM based waterfalls, Webpagetest, and packet captures to study the problem.
In this talk we’ll run through our analysis and see how the potential cause of a problem can change drastically as you look deeper.
Nic Jansma is a software developer building high-performance websites, apps, and open source tools at SOASTA, where he works on mPulse and boomerang. He is also a Microsoft MVP for IE.
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