1865020 - Nightly is 1.5x slower than Chrome on an online pdf-to-text tool

Status: NEW

(Core :: JavaScript Engine, task, P3)

Description

[Mayank Bansal]

Go to https://www.luxa.org/pdf/text
Select the sample pdf file
Wait

Nightly: https://share.firefox.dev/49FQBpc ( total 57s)
Chrome: https://share.firefox.dev/47A5bwJ (38s)

Comment 1

[Mayank Bansal]

Attachment: Sample PDF.part1.rar

Comment 2

[Mayank Bansal]

Attachment: Sample PDF.part2.rar

Comment 3

[Mayank Bansal]

Attachment: Sample PDF.part3.rar

Comment 4

[Mayank Bansal]

Attachment: about:support

Comment 5

[Matthew Gaudet (he/him) [:mgaudet]]

Hmm. Hard to make heads or tails of the Chrome trace here; the profile seems much flatter on Firefox for some reason. Nothing stood out to me with brief investigation.

The fact that a normal size PDF seems to be almost instantaneous suggests we're probably not going to need to look too much in detail here in the short term.

Comment 6

[Mayank Bansal]

Latest Nightly: https://share.firefox.dev/3XMBsyX (57s)