Hi list, The two things we most want to know while profiling Firefox OS app launch time are (1) what styles had been changed (2) why did the restyle take so long.
Gaia apps are designed around event dispatches and one event could trigger many style changes from anywhere from the code base. It is hard to know what styles had been changed, for example class added or removed, and what rules had actually been matched. This leads to the second question. From the gecko profile we usually find both the selector matching and style recalc take considerable amount of time. So I guess we could start from reducing the expensive selectors then trying to reduce the matched elements. Without knowing which rules had actually been matched, we don't know how to optimize the CSS rules. So, do you know a way to collect this kind of information, preferably from WebIDE? Kanru _______________________________________________ dev-tech-layout mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-layout
