With e10s enabled, there is signficant CPOW,time, blocking main thread time time in CPOWs name 22586698μs 363000μs MemChaser These documents discuss CPOW and how addons can avoid the impact by using iframe scripts - draft 1 for addon developers is at https://developer.mozilla.org/en-US/Add-ons/Working_with_multiprocess_Firefox - https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Cross_Process_Object_Wrappers - https://mikeconley.ca/blog/2015/02/17/on-unsafe-cpow-usage-in-firefox-desktop-and-why-is-my-nightly-so-sluggish-with-e10s-enabled/
With e10s enabled, there is signficant CPOW,time, blocking main thread
time time in CPOWs name
22586698μs 363000μs MemChaser
These documents discuss CPOW and how addons can avoid the impact by using iframe scripts