# Advanced Performance Audits with DevTools

DevFeed: [Advanced Performance Audits with DevTools](<https://devfeed.tech/articles/advanced-performance-audits-with-devtools-21680.md>)

Original publisher: [Read original article](<https://paulirish.com/2015/advanced-performance-audits-with-devtools/>)

Author: Paul Irish

Published: 2015-03-27T15:46:00Z

Content type: article

Language: en

Sources: [Paul Irish](<https://devfeed.tech/sources/paul-irish.md>)

Topics: [developer tooling](<https://devfeed.tech/topics/developer-tooling.md>), [Chrome](<https://devfeed.tech/topics/chrome.md>), [browser](<https://devfeed.tech/topics/browser.md>), [Front end](<https://devfeed.tech/topics/frontend.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [infinite scroll](<https://devfeed.tech/topics/infinite-scroll.md>), [Google](<https://devfeed.tech/topics/google.md>)

Tags: [audits](<https://devfeed.tech/tags/audits.md>), [case-study](<https://devfeed.tech/tags/case-study.md>), [chrome](<https://devfeed.tech/tags/chrome.md>), [frontend](<https://devfeed.tech/tags/frontend.md>), [google](<https://devfeed.tech/tags/google.md>), [infinite-scroll](<https://devfeed.tech/tags/infinite-scroll.md>), [latency](<https://devfeed.tech/tags/latency.md>), [performance](<https://devfeed.tech/tags/performance.md>), [profiling](<https://devfeed.tech/tags/profiling.md>), [tooling](<https://devfeed.tech/tags/tooling.md>)

## AI overview

An advanced performance audit of real-world mobile and desktop websites using profiling and the 1000/100/6 performance model. It examines scrolling on CNET, CNET input latency, responsive challenges on Time.com, and infinite scroll on Google Play, with findings intended to improve developer practices, browser APIs, Chrome DevTools, and the Blink rendering engine.

## Source excerpt

Recently, I've spent some time recently profiling real-world mobile websites. Using the 1000/100/6 performance model1, and spelunking deep into each app, the findings have been fascinating. I've written up case study documents for each, incorporating all the findings: Illustrated diagnoses for the poor performance What actions the developer should take How Chrome's tooling should improve Questions and insights for the rendering engine (Blink) ➜ Perf Audits: CNet, Time, Google Play In this doc, we look at the scrolling of CNET, input latency on CNET, some very interesting challenges on the responsive Time.com, and infinite scroll on Google Play's desktop site. The intended audience is browser engineers and performance-minded frontend developers. It's fairly advanced, but I'm spelunking deep to identify how the sites butt heads with the browser APIs and architecture. Lastly, we're using this research to improve Chrome DevTools and what you hear from Chrome. Wikipedia eng team scrutinizing their performance millisecond by millisecond. (Yes, it's a long paper printout of the Chrome DevTools timeline flamechart :) Photo by Ori Livneh, CC BY 4.0 (BTW, use this link to view the same doc but with comments enabled) 1 - More on this performance model later. Stay tuned.