Open Bug 1938805 Opened 2 months ago Updated 2 months ago

With COLR enabled, Nightly is 6x slower than Chrome on opening a page full of emojis. With COLR disabled, we are almost instant.

Categories

(Core :: Graphics: Text, enhancement)

enhancement

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()

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(Reporter: mayankleoboy1, Unassigned)

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()

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Go to https://benjaminaster.com/unicode/?tab=emojis

starting from "emoji" tab
Firefox: https://share.firefox.dev/3DpO5In (9s)
Chrome: https://share.firefox.dev/3VNCXeD (1.5s)

Starting from "all-normal tab" and then switching to "emoji" tab
Nightly: https://share.firefox.dev/40gXomZ (5s)
Chrome: https://share.firefox.dev/4frtIrj (1.2s)

For all other tabs, we are about 2x-4x faster!

Attached file about:support

With COLR disabled : https://share.firefox.dev/4gxW4l9 (feels almost instant)

Summary: Nightly is 6x slower than Chrome on opening a page full of emojis (https://benjaminaster.com/unicode/?tab=emojis) → With COLR enabled, Nightly is 6x slower than Chrome on opening a page full of emojis. With COLR disabled, we are almost instant.
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