Last week, I had the great privilege of presenting an O’Reilly webcast as part of the lead-up to Velocity Santa Clara. The catch was that I didn’t want to give away what I’ll be presenting at Velocity, so I needed to come up with a brand-new topic. I decided to talk about third-party scripts, for two reasons…
Important information for those who use Webpagetest’s video-capture feature to gather performance data.
This past Wednesday, I had the great privilege of hanging out with the New York Web Performance Meetup crowd, and doing a session on web performance automation. Here’s the slide deck and an overview of the session highlights.
I’m a skeptic. As an acceleration play, I see the cost of dynamic site acceleration (aka “whole site acceleration”) products — such as Limelight Site, Cotendo, Akamai DSA and WA, and CDNetworks Application Acceleration — far outweighing the benefit.
Anyone who has run dozens of tests on Webpagetest knows it is challenging/impossible to run and aggregate hundreds or thousands of web page test results. Travelocity has created an incredibly useful script that sits in front of its own instance of Webpagetest and automatically tests multiple landing pages every 10 minutes in perpetuity, then aggregates the results.
Yahoo’s boomerang measures round trips, bandwidth and latency (get specifics here) and, according to its developers, can be applied to a variety of use cases.
No two performance tests give the same results. To illustrate, I put a high-traffic site, Target.com, through its paces on a handful of commonly used tests — Gomez, Keynote, HTTPWatch and Webpagetest — to see how it performs.
Sometimes a little shameless self-promotion is necessary.