Open Bug 614163 Opened 12 years ago Updated 5 months ago
Slow property access on dromaeo's "j
Query -attr(class) x 100" benchmark
This is in the "DOM Attributes (jQuery)" section in dromaeo. Nearly 20% of the time is dealing with resolves (due to JM not PICing DOM stuff with getters?) and in particular calling XPC_WN_ModsAllowed_ProtoResolve is about 10% of the total time. Peter, is that used for just normal DOM objects too?
Something to keep in mind is Dromaeo is using jQuery v1.2.3. http://docs.jquery.com/Release:jQuery_1.2.3 from February 2008.
Yes, but it's just using the DOM. A newer jquery may use the DOM slightly differently, but it may not.... Or do you have concrete evidence the attr() has been significantly changed since in a way that makes this bug somehow irrelevant to our DOM performance?
DOM performance is important regardless of JS lib or lib version so please keep digging/investigating for perf improvements. jQuery did do an overhaul of their attribute/property related methods in v1.6 http://blog.jquery.com/2011/05/03/jquery-16-released/
6 years ago
6 years ago
Whiteboard: [platform-rel-jQuery] → [platform-rel-jQuery][qf]
Marking [qf:investigate:p1] so that someone would first investigate whether this is still an issue.
Whiteboard: [platform-rel-jQuery][qf] → [platform-rel-jQuery][qf:investigate:p1]
Whiteboard: [platform-rel-jQuery][qf:investigate:p1] → [platform-rel-jQuery][qf:p3]
Performance: --- → P3
Whiteboard: [platform-rel-jQuery][qf:p3] → [platform-rel-jQuery]
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