Bug 1821108 Comment 0 Edit History

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Original comment by
on 
In the function `removeFromListener` in the EmberJS-TodoMVC benchmark, we spend 3080 samples inside `Array.prototype.splice` versus V8's 23 samples.

To reproduce, run `index.js` inside https://github.com/mozilla/Speedometer/tree/ab0e3b8406bbc0356244f8cd430900e9a346737b/resources/todomvc/architecture-examples/emberjs/dist in the JS shell.

Profiles (focused on `removeFromListener`'s "JS-only self time"):
Spidermonkey: https://share.firefox.dev/3mGyBXK
V8: https://share.firefox.dev/3L3hKsx
Revision 1 by
on 
In the function `removeFromListener` in the EmberJS-TodoMVC benchmark, we spend 3080 samples inside `Array.prototype.splice` versus V8's 739 samples.

To reproduce, run `index.js` inside https://github.com/mozilla/Speedometer/tree/ab0e3b8406bbc0356244f8cd430900e9a346737b/resources/todomvc/architecture-examples/emberjs/dist in the JS shell.

Profiles (focused on `removeFromListener`'s "JS-only self time"):
Spidermonkey: https://share.firefox.dev/3mGyBXK
V8: https://share.firefox.dev/3ylHwR0

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