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Re: navigationStart in NavigationTiming

From: Boris Zbarsky <bzbarsky@MIT.EDU>
Date: Wed, 01 May 2013 16:00:39 -0400
Message-ID: <51817467.9040306@mit.edu>
To: Arvind Jain <arvind@google.com>
CC: public-web-perf <public-web-perf@w3.org>
On 5/1/13 3:04 PM, Arvind Jain wrote:
> Btw if you could also test http://cnn.com, and make sure navigationStart
> != fetchStart, that would be great. This is an example of cross origin
> redirect, and even here, navigationStart should be the time before the
> redirect is initiated even though redirectStart would show 0.

[15:59:16.137] performance.timing.navigationStart
[15:59:16.139] 1367438338927
[15:59:20.456] performance.timing.fetchStart
[15:59:20.458] 1367438339335
[15:59:26.576] performance.timing.redirectStart
[15:59:26.578] 0
[16:00:10.539] performance.timing.unloadEventEnd
[16:00:10.541] 0
[16:00:17.733] performance.timing.unloadEventStart
[16:00:17.735] 0

-Boris
Received on Wednesday, 1 May 2013 20:01:08 UTC

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