While we work on tuning we obviously how many tools provided by the browsers profilers but sometimes you have to throw your own benchmarks in to get to the core of the problem, enter SC.Benchmark.

It’s really easy to use:

SC.Benchmark.start('SomeIdentifier');
//<your slow code>
SC.Benchmark.end('SomeIdentifiter');

then from the console: SC.Benchmark.report(‘SomeIdentifer’);

There’s lots more that this can do but I thought this would be helpful
enjoy!