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RE: navigationStart in NavigationTiming

From: Jatinder Mann <jmann@microsoft.com>
Date: Wed, 1 May 2013 20:26:58 +0000
To: "'arvind@google.com'" <arvind@google.com>, "Boris Zbarsky (bzbarsky@mit.edu)" <bzbarsky@mit.edu>
CC: "'public-web-perf@w3.org'" <public-web-perf@w3.org>
Message-ID: <9af236bbc95a419086ede6097a953511@BLUPR03MB065.namprd03.prod.outlook.com>
IE10 on right clicking on CNN.com and opening it a new tab has navigationStart < fetchStart and the others are zero'd out as well.

>> performance.timing.navigationStart 
1367439590579 
>> performance.timing.fetchStart 
1367439590612 
>> performance.timing.redirectStart 
0 
>> performance.timing.redirectEnd 
0 
>> performance.timing.unloadEventStart 
0 
>> performance.timing.unloadEventEnd 
0

Thanks,
Jatinder

-----Original Message-----
From: Boris Zbarsky [mailto:bzbarsky@MIT.EDU] 
Sent: Wednesday, May 1, 2013 1:01 PM
To: Arvind Jain
Cc: public-web-perf
Subject: Re: navigationStart in NavigationTiming

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 20:28:22 UTC

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