Re: Review of WebRTC Statistics from Web Performance Working Group

Hi Ilya,

thanks for your feedback!

I filed two issues to help us keep track of it:

https://github.com/w3c/webrtc-stats/issues/118
https://github.com/w3c/webrtc-stats/issues/119

Br,
Stefan

On 20/12/16 20:52, Ilya Grigorik wrote:
> Hi Stefan.
>
> On Wed, Dec 14, 2016 at 1:29 AM, Stefan Håkansson LK
> <stefan.lk.hakansson@ericsson.com
> <mailto:stefan.lk.hakansson@ericsson.com>> wrote:
>
>     Dear Web Performance Working Group,
>
>     The WebRTC Working Group is working toward publishing its WebRTC
>     Statistics API to Candidate Recommendation and is thus seeking review
>     from a variety of groups on the document:
>
>     https://www.w3.org/TR/2016/WD-webrtc-stats-20161214/
>     <https://www.w3.org/TR/2016/WD-webrtc-stats-20161214/>
>
>     We are particularly interested on feedback from the Web Performance
>     Working Group on possible alignments needed between the names, value
>     spaces and design of the statistics exposed in our documents with the
>     ones the Web Performance Working Group has brought through its
>     various APIs.
>
>
> On a quick scan, I didn't spot any substantive problems. That said, a
> few nitpicks and thoughts:
>
>   * Provide a normative reference [1] for DOMHighResTimeStamp? Want to
>     make sure that time origin definitions are aligned across
>     implementations.
>   * Stats are associated with each stream, which means that application
>     developers have to manually instrument each stream. Is there a use
>     case for analytics / third-party instrumentation to gather similar
>     stats? E.g. it would be nice if existing RUM providers could
>     auto-gather stats without monkey-patching all the WebRTC APIs to
>     figure out when new streams are initiated, etc.
>       o Performance Timeline provides PerformanceObserver [2] interface
>         which allows anyone to register and listen for events. It might
>         be worth considering, if it makes sense, emitting some WebRTC
>         related events via this mechanism... which could stream specific
>         or aggregated.
>
> I'd be curious to hear from RUM vendors/folks if and how they currently
> instrument WebRTC.
>
> Cheers.
> ig
>
> [1] https://www.w3.org/TR/hr-time-2/#dom-domhighrestimestamp
> [2] https://www.w3.org/TR/performance-timeline-2/#the-performanceobserver-interface

Received on Wednesday, 21 December 2016 13:57:51 UTC