1924315 - Nightly is 2x slower than Chrome on a FFT-image-comparison tool (Continuous GCMinor all with reason = FULL_SLOT_BUFFER)

Status: NEW

(Core :: JavaScript Engine, task, P3)

Description

[Mayank Bansal]

• Go to https://turbomaze.github.io/JS-Fourier-Image-Analysis/
• In the "image URL" field, paste this link : https://upload.wikimedia.org/wikipedia/commons/6/60/Bringer_of_War_Planet.png
• Click on "Draw"

1. Click on "Compute 2D DFT"
2. Click on "Reconstruct Image"
3. Click on "See Difference"

Nightly; https://share.firefox.dev/4eM8sNx (12s, 12s, 300ms)
Chrome: https://share.firefox.dev/3U8Z5PH (6s, 6s, 250ms)

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As an additional data point, I also used a 4096x4096 image. Here are the results:

Nightly:
Creating the DFT: https://share.firefox.dev/3BEOju1 (60s without the profiler)
reconstruct image: https://share.firefox.dev/3Ym7X7e (68s)
Diff: https://share.firefox.dev/401P4rj (1.5s)

Chrome:
Creating the DFT: 25s
Reconstruct image: 45s
Diff: 3s

Comment 1

[Mayank Bansal]

Latest profile: https://share.firefox.dev/4m01ojt
(not much change from the first comment)