Boris Zbarsky wrote: > Sean Hogan wrote: >> I don't know what would count as a performance sensitive web-app. > > Just as a data point, Gecko trunk had a bug earlier today where we > accidentally introduce a performance regression on removing table > rows. The bug was easily caught because the regression made removing > a table row O(N) in number of rows and it immediately turned out that > all sorts of pages out there sort multi-thousand-row tables by > reordering the row nodes in the DOM. Can you provide some URLs? > > Which means that they're doing thousands to tens of thousands of DOM > mutations. And the time required needs to stay small (under 200ms, > ideally, since that's about whether the user starts perceiving the > operation as laggy). > But in this case they wouldn't be using Mutation Events. > That's the sort of thing that we're worried about here, I think... Sure. Every feature has its costs, and sometimes those costs mean you don't use it. I think the page author should make that decision for Mutation Events.Received on Friday, 26 June 2009 03:42:54 UTC
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