RE: More on workerStart

Adding Justin so he is on this thread. He implemented some of this in IE/Microsoft Edge.

From: Ilya Grigorik [mailto:igrigorik@google.com]
Sent: Thursday, June 4, 2015 2:25 PM
To: Boris Zbarsky
Cc: Jonas Sicking; public-web-perf@w3.org; Przemysław Pietrzkiewicz
Subject: Re: More on workerStart



On Thu, Jun 4, 2015 at 12:49 PM, Boris Zbarsky <bzbarsky@mit.edu<mailto:bzbarsky@mit.edu>> wrote:
On 6/4/15 3:39 PM, Ilya Grigorik wrote:
Are you referring to "If there is no previous document, this attribute
must return the same value as fetchStart"?

Yes.
As ppi@ noted in his doc: "In fact, however, the HTML spec requires
every new browsing context to load the about:blank document at
initialization, therefore there is always a previous document and this
particular condition never applies." [1]

That note is incorrect, because this condition applies to the about:blank document that's loaded at initialization!  That's the whole point.  We've covered all this ground before, on this mailing list...

Ok, think I found your previous note about it: https://lists.w3.org/Archives/Public/public-web-perf/2014Jul/0007.html. How about...

"If there is no previous document, the time origin must be equal to the time when the [attempt to obtain the resource is made][1] (step 14 of navigation algorithm)."

[1] http://www.w3.org/TR/html5/browsers.html#navigate

Received on Friday, 5 June 2015 00:00:49 UTC