emberjs/ember-inspector — pull request #232 by teddyzeenny (2014-09-28 20:55:12+00:00)
Title: Make promise tracing opt-in for better performance

RSVP used to send a stack trace with every promise by default. Now is is disabled by default due to the high performance cost.

This PR adds a checkbox called "Trace promises" to enable the RSVP flag `instrument-with-promises` to start storing stack traces along with promise info.

https://github.com/tildeio/rsvp.js/pull/303

cc @stefanpenner