Comments (13)
I plan to discuss this at the next WebPerfWG call on June 9th.
from navigation-timing.
@yoavweiss you mentioned a follow-up to figure out how to map browser launch to HTML concepts, what would be the appropriate next step here?
from navigation-timing.
@domenic - do you know if there's an HTML concept that we can map to that can distinguish between a navigation that was initiated alongside a browser startup vs. navigations that weren't?
from navigation-timing.
There is no such concept.
from navigation-timing.
@domenic - Any advice on how such a concept may be added?
from navigation-timing.
I don't think I have any special guidance in this area, beyond the usual of trying to write specs in enough detail that they are interoperably implementable.
from navigation-timing.
What are the expected effects on PerformanceNavigationTiming
metrics for this new useragent_launch
NavigationType
? Will the start up time incurred from cold starting the user agent be included as a new metric? Or does TimeOrigin
already account for this? In other words, will developers be able to measure the app start up duration, i.e. the time before startTime
, redirectStart
, etc?
from navigation-timing.
@marcelduran this proposal does not intend to change the definitions of the timings, however we are working on a separate follow-up proposal that does.
from navigation-timing.
Based on the conversation in whatwg/html#8150 about the change to "push" and "replace", it doesn't appear that we need to have a 1:1 mapping to an HTML historyHandling
types for this change. We should be OK to add useragent_launch
to the NavigationType enumeration.
from navigation-timing.
@bmathwig - what did you have in mind in terms of spec language?
from navigation-timing.
We have been hearing from partners that they really want a 'launch time' as well - so they can measure the full e2e time between the user launching a shortcut or a file (for file handling w/ installed app) to, say, getting that file in the launchQueue or the page loading.
I'm guessing we would need to add more information to the navigation to add this in there?
from navigation-timing.
@marcelduran this proposal does not intend to change the definitions of the timings, however we are working on a separate follow-up proposal that does.
Great @amiyagupta! Would you mind linking the proposal here once available?
from navigation-timing.
closing the loop a little bit - I made a request here to modify this proposal a tad: MicrosoftEdge/MSEdgeExplainers#614
from navigation-timing.
Related Issues (20)
- Using navigationStart as a baseline may expose cross-origin timing information HOT 69
- How should prefetch be exposed? HOT 7
- Processing Model: Should 'prompt for unload' box actually be unload?
- Using "connectStart", "secureConnectionStart" and "connectEnd" with HTTP/3 flows HOT 5
- Reporting timestamps rely on a global object which might not exist yet HOT 1
- ToT spec has a bunch of respec warnings and errors HOT 1
- Should pages with different COOP be able to get unload event start/end. HOT 13
- Extend Navigation Timing API to include back/forward cache NotRestoredReasons HOT 4
- Links to "relevant application caches" are broken HOT 1
- Report that Critical-CH was used to restart a navigation HOT 5
- Extend the navigationType enum to include "reload after being discarded" navigations HOT 3
- Detecting whether a navigation was BFCache-eligible HOT 2
- Clarify how PerformanceTiming.responseStart relates to Early Hint responses HOT 5
- performance.timeOrigin vs performance.timing.navigationStart HOT 3
- Extending the NavigationTimingType HOT 5
- NavigationTimingType enum need updates as HTML spec changed HOT 7
- Broken references in Navigation Timing Level 2 HOT 1
- Broken references in Navigation Timing Level 2
- Measuring `beforeunload` HOT 3
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