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Paul Irish

@paul_irish

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Following
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Find me elsewhere: 🦋 @paul.irish — 🐘 @[email protected] I 💗 the web • I work on performance, Chrome DevTools, Lighthouse, and PageSpeed Insights.

Joined March 2007
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@paul_irish
Paul Irish
3 months
@dotnetsugar @bramus @addyosmani Yup. You're not wrong. We got work underway to improve this.
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@paul_irish
Paul Irish
3 months
@_chenglou @jaffathecake @nomsternom might know what's up
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@paul_irish
Paul Irish
6 months
@rick_viscomi @GijoVarghese_ @addyosmani Thanks for reporting it @GijoVarghese_ ! It's now fixed.
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@paul_irish
Paul Irish
8 months
@jwajsberg You're 100% right. :) It was entirely Firefox DevTools that inspired those features and their UI. Thanks for making it so powerful and well-crafted!
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@paul_irish
Paul Irish
9 months
@WebTwitr @nomsternom @anniesullie @gilberto_cocchi The firstUIEventTimestamp can happen before the starttime, after the starttime, or.. not at all. When it's before (like this), it does suggest there was an input delay on an interaction that sits within this LoAF.
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@paul_irish
Paul Irish
10 months
@threepointone Whoaa. Congrats Sunil!!
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@paul_irish
Paul Irish
10 months
@cramforce It's landed! Should be in Canary tomorrow. Stable in ~6 weeks.
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@paul_irish
Paul Irish
10 months
@steveruizok You can do it on CI machines, but.. they are usually resource-constrained, which leads to a bit higher variability. Still; probably ok if the tests are very focused.
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@paul_irish
Paul Irish
10 months
RT @kh_kirill: Today, @ChromeDevTools forever changed the way we approach performance optimizations.
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@paul_irish
Paul Irish
11 months
@WebTwitr @tunetheweb @anniesullie Parsing trace data is hard. Real tough. I'd recommend using the trace engine that we use within DevTools. It's not released/official/supported, but I trust you'll be capable with it:
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@paul_irish
Paul Irish
1 year
@rebane2001 btw I added a treemap visualization for the data:
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@paul_irish
Paul Irish
1 year
@_Axiome_ @thespite @threejs Yah yah! No problem amigo. :)
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@paul_irish
Paul Irish
1 year
@igobylukas @tunetheweb @addyosmani Yes according to my own investigation, Nostra is definitely delivering very different content to Lighthouse in order to get much better scores. This "cloaking" is dumb as it's 1) gaming purely for Lighthouse score and 2) the score itself has no effect on SEO.
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@paul_irish
Paul Irish
1 year
@_Axiome_ @thespite @threejs Separately, but related... PageSpeed Insights gives extremely bad scores to webgl content because its backend uses swiftshader. But.. that's not fair at all. We want to add a warning that says ~"webgl content detected. report probably innaccurate. :( "
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@paul_irish
Paul Irish
1 year
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@paul_irish
Paul Irish
1 year
@leeerob Nice UX on the layout shift reporting! You got a designer who wanted to challenge the status quo and I appreciate it. :)
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