<trackbot> Date: 14 December 2011

HAR Format and Navigation Timing

http://lists.w3.org/Archives/Public/public-web-perf/2011Nov/0049.html

http://www.softwareishard.com/blog/har-12-spec/

Arvind: Does it make sense to standarize the HAR spec in the W3C?
... Another issue is that does it make for the browser to implement this

Jatinder: Can we get some background on when this was designed and how widely adopted is it?

Jan: Three years ago we created HAR format v1 to create a common template to send data up for many uses like analytics and test cases. We currently have HAR v1.2. HAR v1.3 will eventually include Navigation Timing.
... HAR currently has a <timings> tag.

Steve: I think its important to mention where HAR is supported today. Firebug, Chrome Dev Tools, IE9/10.

http://www.softwareishard.com/blog/har-12-spec/

James: Whats the action here?

Arvind: The questions are: Should the HAR spec be included in the W3C spec?

Jatinder: I think generally the HAR format sounds like a good idea. But I think our timing specs shouldn't take any dependency on a particular format.

Arvind: The two are independent. If anything, HAR format would take a dependency on the Timing specs, not the other way around.

<Karen_> I would want to ensure that if there are 2 mthods of getting the data that they can align together and there are no discrepancies

Steve: I would bet that over 50% of web pages storing performance data use the HAR format. The value here is that in can be interoperable between other tools.
... Another point is to bring a JavaScript API to output a HAR format

James: Would this be a W3C spec? I was under the impression that the W3C specs were browser related.

plh: The web is more than just the browser. We can include this in the W3 spec.

Jan will propose the HAR format in the Web Perf spec format.

Arvind: Seems like it doesn't make sense to expose this to JavaScript, as there may be privacy and security concerns. This is in fact mostly designed to be used by developer tools. Do you agree Jan?

Jan: Yes, I think this is for developer tools rather than from script.

Conference Call Schedule

Jatinder: Let's keep next week's meeting as tentative and cancel 12/28 meeting. We can reconvene in the new year.
... We can discuss Alois' topic of tool apis on the Jan 11 meeting.

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Default Present: [Microsoft], Plh, Michelle_Park, +1.604.875.aaaa, [IPcaller], +1.650.253.aabb, +43.732.908.2aacc, Jon_Gunderson
Present: [Microsoft] Plh Michelle_Park +1.604.875.aaaa [IPcaller] +1.650.253.aabb +43.732.908.2aacc Jon_Gunderson Karen plh Jatinder Arvind SteveSounders Jan Zhiheng

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Found Date: 14 Dec 2011
Guessing minutes URL: http://www.w3.org/2011/12/14-webperf-minutes.html
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