[Webkit-unassigned] [Bug 73737] HIERARCHY_REQUEST_ERR check in checkAcceptChild should be optimized for newChild without children

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Dec 3 01:28:59 PST 2011


--- Comment #3 from Ryosuke Niwa <rniwa at webkit.org>  2011-12-03 01:28:59 PST ---
I took 11 samples on Apple's mac port applied on r101862.

Without patch:
shallow tree: 2ms
deep tree: 4.09ms (std:0.3)
deeper tree: 11.45ms (std:0.5)

With patch:
shallow tree: 2ms
deep tree: 3ms
deeper tree: 6.91ms (std 0.3)

40% improvement! The number, however, indicates that we have at least one more linear algorithm hidden somewhere.

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