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Re: [minutes] 20101020 Web Performance

From: Philippe Le Hegaret <plh@w3.org>
Date: Thu, 21 Oct 2010 14:45:34 -0400
To: Anderson Quach <aquach@microsoft.com>
Cc: public-web-perf <public-web-perf@w3.org>
Message-ID: <1287686734.8724.62.camel@chacal>
I don't read anything here about "Next steps to getting Navigation
Timing to draft". What is holding us from publishing a snapshot of
navigation timing?

Philippe


On Wed, 2010-10-20 at 18:32 +0000, Anderson Quach wrote:
> Available at:
> 
> http://www.w3.org/2010/10/20-webperf-minutes.html
> 
>  
> 
> Web Performance Working Group Teleconference #06
> 
> 20 Oct 2010
> 
> See also: IRC Log
> 
> http://www.w3.org/2010/10/20-webperf-irc
> 
>  
> 
> 
> Attendees
> Present
> 
> Biesi, AndersonQuach, Zhiheng, NicJansma, Sigbjorn
> 
> Regrets
> 
> PLH, JasonWeber
> 
> Chair
> 
> ArvindJain, JasonWeber
> 
> Scribe
> 
> AndersonQuach
> 
> 
> Contents
> Topics
> 
> ·         Feedback on Privacy Issue w/ Navigation Timing.
> 
> ·         Next steps to getting Navigation Timing to draft.
> 
> ·         Getting started with Resource Timing and User Timing.
> 
> ·         Any other business.
> 
>  
> 
>                                    
> ______________________________________________________________________
>  
> 
>  
> 
> Zhiheng: TonyG has gone thru security review with the Chrome team,
> suggestions include zero'ing out redirectCount in different origin
> navigations in the timeline, and to provide a means to disable the
> interface completely
> 
> AndersonQuach: Sounds good, as long as the disable via UI is a
> non-normative requirement.
> 
> Sigborn: We must be safe by default. The timings that reveal
> off-domain must not be available programmatically.
> 
> <scribe> scribe: AndersonQuach
> 
> AndersonQuach: It can be feasible to attack with the same origin and a
> redirect service. We could remove redirectCount altogether.
> ... And disable redirect and unloading timings for different origin.
> 
> Zhiheng: We need to hear more feedback from user-agent and security
> experts about the removal of redirectCount
> ... where is navigationStart?
> 
> Sigborn: What is same domain, same cookie domain?
> 
> Zhiheng: Same host
> 
> Sigborn: Cookie domain, sub domains of yahoo.com
> 
> AndersonQuach: where did we land with navigationStart
> 
> NicJansma: A->B->A->A, navigationStart should begin immediately prior
> the second A
> ... for same domain with different origin redirections
> 
> Zhiheng: need to look to clarify navigationStart and redirectStart
> 
> AndersonQuach: Zhiheng, can you capture your thoughts and we'll get
> feedback from Jonas and TonyG?
> 
> NicJansma: Anderson and I will follow-up with additional feedback from
> our security review via mail and for the next meeting.
> 
> Sigborn: Should make the same domain be the same as the cookie domain,
> I will write it up.
> 
> AndersonQuach: Let's move the spec to a working draft as all the
> latest feedback has been incorporated.
> ... Let's be explicit that this is not a user-agent benchmark.
> 
> Sigborn: Let's say due to the non-normative phases, the individual
> phases should not be used as a benchmark.
> 
> AndersonQuach: Agreed.
> ... Let's simplify the accessing of the ResourceTiming
> ... Let's say have a fixed buffer of 1000, have the ability to clear
> the buffer, and to expand the buffer to cater to WebApps.
> 
> Zhiheng: We don't want developers to crawl the page.
> 
> AndersonQuach: Agreed, we should have the timing centralized.
> 
> Zhiheng: Yup, the object should be easily serialized into a JSON
> object.
> ... How can a developer get the timing about a specific image?
> 
> NicJansma: Timing of a specific image?
> 
> Zhiheng: Yes.
> 
> NicJansma: ResourceTiming can have the URL and potentially the id and
> provide a means to filter based on type and/or id.
> ... Goal for ResourceTiming to get timing that is inaccessible to JS.
> ... We should keep in mind to be able to get the timing for individual
> elements and the collection.
> 
> Zhiheng: Come up with a short summary proposal and review the
> proposals.
> 
> AndersonQuach: I can write that out.
> 
> Zhiheng: ResourceTiming has privacy concern as well. To have an HTML
> header to turn this on.
> ... implement the allow policy in the http header.
> 
> Sigborn: This is possible but difficult to implement as seen in other
> W3C discussions.
> 
> NicJansma: For different origin we can reduce the amount of details,
> just having fetchStart -> loadEventEnd, not providing additional info
> via JS. Provide total time to load the content.
> 
> Sigborn: Expand definition of Same Origin to include Same Cookie
> Domain + Sub Domain.
> 
> AndersonQuach: 1. We agree to move spec to working draft.
> ... 2. Discuss privacy offline, feedback from Tony and Jonas.
> ... 3. Zhiheng will provide a proposal for navigationStart.
> ... 4. Anderson will respond with the simplified resource timing
> proposal.
> ... Thanks everyone for meeting!
> 
>  
> 
> 
Received on Thursday, 21 October 2010 18:45:46 GMT

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