servo / servo/font-kit

Potential font loading performance increase of >50%

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Dominant language
Rust
Stars
840
Forks
137
Avg merge
4h 56m
Merged PRs (30d)
1

Description

Forgive me if this is wrong information or unorthodox, but for my first Rust project i have been utilizing font_kit and plaqyed around a little with the loading approach.

I have a 2GB folder with ~5.5k fonts, which loads in roundabout 50 seconds with the current implementation. Using jwalk and it's processing capabilities to only keep the relevant files and distinguishing between single and collection types by their file extension managed to get it down to ~11s using Font::from_path to read the files.

If i did research correctly collections should use the ttc or otc extensions only, which would make this approach viable, if not i'll happily stand corrected.

Thanks for this library it's great :)

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Research direction

Start by reviewing the current font-loading implementation and comparing it with the reported jwalk approach, using Font::from_path and TTC/OTC extension handling as the relevant entry points. Measure loading time against the reported ~50-second baseline on the 2GB, ~5.5k-font folder; done means a validated performance improvement without incorrect font classification.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
performance
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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