[Webkit-unassigned] [Bug 106127] [meta] HTML parser shouldn't block the main thread
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Tue Jan 8 14:23:59 PST 2013
https://bugs.webkit.org/show_bug.cgi?id=106127
--- Comment #8 from Adam Barth <abarth at webkit.org> 2013-01-08 14:25:53 PST ---
Created an attachment (id=181766)
--> (https://bugs.webkit.org/attachment.cgi?id=181766&action=review)
HTML parser runtime (measured on chromium-mac on a Macbook Pro via inspector instrumentation)
Here's more details from the dataset Nat took on his Macbook Pro. The "ParseHTML" column represents the total amount of time attributed to the HTML parser by the inspector instrumentation. The "ParseHTML_max" column is the largest contiguous chunk of time (in a single load of the page).
Looking at the ParseHTML_max column, the parser seems to often consume multiple frames (by which I mean 60 Hz time slices on the main thread). In some cases, such as http://en.wikipedia.org/wiki/Wikipedia and http://games.yahoo.com the parser creates 7-9 frames of jank.
Note: These measurements were taken on a Macbook Pro. It would be interesting to see how these measurements compare on a mobile device.
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