Open
Bug 1853842
Opened 3 years ago
Updated 1 year ago
JS demo is 2x slower in Nightly compared to Chrome
Categories
(Core :: JavaScript Engine, task, P3)
Core
JavaScript Engine
Tracking
()
NEW
People
(Reporter: mayankleoboy1, Unassigned)
References
(Blocks 1 open bug, )
Details
Attachments
(1 file)
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9.68 MB,
image/jpeg
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Details |
geometric_129.jpg
Go to https://brianmacintosh.com/asciiart/
Set "output height" to 320
Select a large image file
Chrome: https://share.firefox.dev/44RPlMg (42 seconds)
Nightly: https://share.firefox.dev/3t25cdZ (73 seconds)
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Updated•3 years ago
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Severity: -- → N/A
Priority: -- → P3
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Reporter | |
Comment 1•1 year ago
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9mb image
firefox: https://share.firefox.dev/4nvz5u6 (33s)
Chrome: https://share.firefox.dev/4gnLOg5 (17s)
Summary: JS demo is 1.7x slower in Nightly compared to Chrome → JS demo is 2x slower in Nightly compared to Chrome
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Reporter | |
Comment 2•1 year ago
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Comment 3•1 year ago
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There's a variety of nonsense going on in this benchmark (eg using for-in to iterate the keys of an array), but mostly it just looks like we spend longer in overlayLetter, which is doing a bunch of number-crunching array math to compute a convolution. I suspect that this is just another instance of us being slightly worse at that.
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Description
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