[Webkit-unassigned] [Bug 13115] REGRESSION: 1000% performance regression in DOM access by index, which was already slow

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Apr 5 00:02:25 PDT 2007


alice.liu at apple.com changed:

           What    |Removed                     |Added
                 CC|                            |alice.liu at apple.com

------- Comment #6 from alice.liu at apple.com  2007-04-05 00:02 PDT -------
I've found 3 ranges of regression, and 1 range of improvement.  I was using the
test at http://dscoder.com/indexperf.html

2.0.4:  ~5400 ms
r13058: ~5400 ms
r13060: ~6300 ms

r15531: ~6300 ms
r15534: ~7000 ms

r15536: ~7000 ms
r15544: ~7500 ms

r16513: ~7000 ms
r17582: ~6700 ms
TOT:    ~6700 ms

I'm not sure what to make of these findings.  I don't really see how r13059
could have had an impact on this test, and r13060 definitely couldn't.  For the
second range, we can rule out r15533 and r15534 as causes of regression, so i
guess that leaves 15532.  haven't really looked into the 3rd range yet, and i'm
not sure if it was actually resolved between 15544 and 15561 or if it was just
a coincidental speedup. 

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