3 ms·

That's because the parser isn't optimized for compressed CSS. By airing the file out a bit (just adding some double line-breaks), and passing -O2, it goes down

That's because the parser isn't optimized for compressed CSS. By airing the file out a bit (just adding some double line-breaks), and passing -O2, it goes down to 177ms :)

nex3 16y ago
This is real CSS handwritten by real people. It's not compressed, it's just not in a fully-expanded style. If your parser is slow for reasonably formatted CSS, then your parser is slow. The best case can be as fast as you want, but real-world use is what matters. For what it's worth, -O2 brings the compile time for github.css down to about 1.5s.
- cloudhead 16y ago
  The github CSS is compressed. It's fine to test worse-case scenario, but doesn't mean much.
  - nex3 16y ago
    No it's not. Look at it: it's one-selector-per-line, which is a very common style for handwritten CSS. If it were compressed, it would have no line breaks.