[Webkit-unassigned] [Bug 172439] Figure out why Firefox's score goes up by 40% on Speedometer 2 compared to 1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172439

--- Comment #20 from Addy Osmani <addyo at chromium.org> ---
> I've done the same experiment of running Speedometer 1 and Speedometer 2 on Safari 7.0.6, and I'm seeing ~44% progression from Speedometer 1 to Speedometer 2 for the total time of subtests excluding Angular, which no longer runs on Safari 7.0.6 due to the lack of support of Promise.

> This confirms my hypothesis that the relatively smaller speedups in Chrome and Safari compared to Firefox comes from the fact Chrome and Safari have been optimized for Speedometer content in the last three years.

> Closing this bug given the observation.

Our sincere thanks for spending time analyzing the deltas between 1 and 2 in more depth. It's very useful to know that Safari and Chrome's minor speedups here are probably been due to historical investment in looking at the Speedometer benchmark.

We appreciate the observation being shared. 

With this issue being closed, https://bugs.webkit.org/show_bug.cgi?id=175715 is currently the remaining blocker to finalizing S2. If there are any other framework implementations you would like updated further, we're happy to spend time on that next week.

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