

https://webpagetest.org/video/compare.php?tests=190614_WM_3d19cdbc701d4b08796071455873a193-r%3A1-c%3A0,190621_G9_f85b503f09e7c366e37f1f7c1386f943-r%3A1-c%3A0&thumbSize=200&ival=100&end=full …https://twitter.com/tomdale/status/1141903306312310784 …
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...but it's 15% as long as the late-long-task here: https://webpagetest.org/chrome/inspector-20181102/inspector.html?experiments=true&loadTimelineFromURL=/getTimeline.php?timeline=t:190614_WM_3d19cdbc701d4b08796071455873a193,r:1,c:0,s:1 … These are countable. We can simply measure which is closer or further away from "good".
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Do tools matter? Will happily agree that tools don't make the performance, teams do. But teams that care pick better tools.
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And yes, this *is* down to incentives. I'm hopeful we can get better incentives in play soon:https://github.com/slightlyoff/never_slow_mode/blob/master/README.md …
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End of conversation
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Do iFrames not block the main thread? That intuitively makes sense to me but last time I checked they appeared to
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& Web Standards TL; Blink API OWNER
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