On 04/02/15 14:57, Manish Goregaokar wrote:
> I don't see any, however since Servo isn't being dogfooded yet, there's not
> much data we can gather on this (yet).
> 
> Still, it would be interesting to hide a bunch of "useful" web platform
> features behind some flags, add some specific reporting/logging, and see
> how many of them are really needed (and if they break important things)
> whilst dogfooding.

For general features you get much better data from adding telemetry to
an existing widely used engine like Gecko or Blink. Therefore the value
of doing this in Servo seems rather low. If there are features that we
think are rarely used and that we would prefer not to implement, running
experiments on Gecko seems like the easiest way forward (although I
think the details of the way Gecko's telemetry works makes it harder to
collect all the same data that is available through Blink infrastructure)

In this specific case the kind of question that needs to be answered is
more difficult since it's not of the form "is client side feature X used
at all". Unfortunately I guess that Servo is still a way away from being
able to help with that kind of question because there are so many
possible reasons for a site not working that it's hard to pin it on one
specific thing.
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