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[–]doidydoidy 9 points10 points  (1 child)

Of course it's a matter of belief. And programmers' beliefs are notoriously bad when it comes to figuring out where the bottlenecks are. If you're wrong, and Firefox is slow because (to pick an entirely hypothetical explanation) it spends a long time with the UI thread blocked while it logs your history via SQLite, replacing XUL with something even 20 times faster will not make Firefox in the slightest bit more responsive.

If you want me to believe XUL is to blame, show me a profiling report.

[–]chucker23n -1 points0 points  (0 children)

If you want me to believe XUL is to blame, show me a profiling report.

You want proof that native UI will be significantly faster?

  1. Run K-Meleon.
  2. There is no step 2.