[Webkit-unassigned] [Bug 55440] improve layout performance by reducing the traversal time of the floating objects

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=55440





--- Comment #5 from Mark Rowe (bdash) <mrowe at apple.com>  2011-03-01 11:58:10 PST ---
(In reply to comment #4)
> (In reply to comment #3)
> > Maybe I’m missing something, but how is going from 503s to 269s a 80~90% improvement?  That seems like a 45% improvement to me.
> 
> Sorry for confusing you but I think it depends on how we describe the speedup. Yes the time is reduced by 45%, but considering the speed it's a 80~90% improvement. Just like we see "2X speedup" more often than "50% improvement" when the time to complete a job is shortened from 2s to 1s.

The change from 269 to 503 is ~85%. The change from 503 to 269 is -45%.  It seems nonsensical to describe the speedup in terms of what regression it would take to get back to the original performance.

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