On Tuesday 2013-09-24 23:12 -0700, Patrick Walton wrote: > On 9/23/13 11:57 AM, Boris Zbarsky wrote: > >It's hard to say more here without seeing the actual testcase being > >measured. > > Here it is: > > https://gist.github.com/pcwalton/6695691 > > I deliberately crafted it to avoid shaping and floats so that, to > the greatest extent possible, it's testing the core block reflow > algorithms only. (There is still some whitespace in it though.)
For what it's worth, I did a bunch of Gecko work in 2001 to improve Gecko performance on a vaguely similar test. See, e.g., https://github.com/mozilla/mozilla-central/commit/75d32bb57970a582a6f456fd01e9926d7ce6d565 However, I think that regressed in Gecko somewhat substantially in late 2004 with roc's margin collapsing rewrite: https://github.com/mozilla/mozilla-central/commit/fcfeb6506e691f17d7f83793d7ef4c9f28f8898a So I think it's probably possible to do a good bit better than current Gecko. And I also think it might be worth seeing how Gecko does on your test before/after the 2004 margin collapsing changes. -David -- 𝄞 L. David Baron http://dbaron.org/ 𝄂 𝄢 Mozilla https://www.mozilla.org/ 𝄂 Before I built a wall I'd ask to know What I was walling in or walling out, And to whom I was like to give offense. - Robert Frost, Mending Wall (1914)
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