On Mon, Feb 15, 2010 at 1:37 AM, Alois Reitbauer < [email protected]> wrote:
> As discussed with Richard and Zhiheng here the feedback on the proposal by > dynaTrace software. We had a look at the new spec draft and have a number of > questions and proposals: > > - In the NavigationTiming interface you refer to paint events. Do you > really mean paint here or layouting? Paint events are in our opinion less > relevant from a performance perspective than layouting (or reflow) events. > > - Additionally it would be nice to not only see the pain event count > but also the paint event time. You can then find out how much time is spent > layouting. Just having the number of operations does not provide this > information. > > - We are a bit unclear how to access the timing information for the > HTML elements. Would we have to browse the whole DOM to get them? This could > result in quite a performance overhead. > > - Additionally we wonder if you only want to additionally support > timings for XHR requests. We think it would be good to support every type of > network request. > > - We are also wondering about what to use the TimingMap respectively > the ticks property for. A nice use case would be to store the time of a > click event and then retrieve it on the next page. However this will not be > part of the window.timing attribute – right? > > On the mailing there was also a note that “… some parts are implemented by > chromium”. Are there any more details which parts, so we could try to use > them and provide feedback as well. > > window.chrome.loadTimes() has the following properties: requestTime startLoadTime commitLoadTime finishDocumentLoadTime finishLoadTime firstPaintTime firstPaintAfterLoadTime navigationType Note: This is not a well documented API, and it is something we may drop in the future in favor of the WebTiming spec. -Darin > > > - Alois > > > > Alois Reitbauer, Technology Strategist, dynaTrace software GmbH > > > _______________________________________________ > webkit-dev mailing list > [email protected] > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev > >
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