Earlier quoted context omitted.
> Lastly, crash reports are sort of a boolean filter - you only get the people that crash. The things I'd like to know to help in my development are things like "what is the histogram of max GC pause times on docs.google.com". Getting that info requires a good random sampling of the population, not just those who exhibit problems. PLEASE do not go down this road. Look where "optimizing" video card drivers has led the…
Making optimizations based on telemetry from real world sites doesn't mean you're optimizing for that one site only, like a video driver including hacks for a specific game. For example, shifting an array in Firefox used to be O(n) vs. O(1) in the competition [1]. Improving these sort of code paths benefits the entire web, even if the performance issue is discovered and profiled on docs.google.com. [1] https://bugzil…
Again, the question should be if something "benefits the entire web", how can we discover it without an opt-out anti-feature? If the answer is we can't, then we don't want it. It is as simple as that.