CPU Load Meter would be appropriate if I was writing for public consumption. I basically got the info from various sources on this forum over the years. I tried searching but this forum lacks an easy way of doing so. Search results are too broad. I do seem to remember that a member of Ableton's team confirmed. But it has been a while so forgive me for not being more specific.
Quote from gearslutz.com (which does have a decent search function)http://www.gearslutz.com/board/music-computers/566779-ableton-cpu-load-100-actual-cpu-load-30-help.html
"This is because the Ableton CPU meter shows the hardest working core's load, rather than the overall load over your CPUs, whilst the OS one shows the lot averaged. Pretty sure I read that recently on this or Ableton's own forum.
As an addendum to that, plugins on the same track work off of one core. So you can have a project that'll run smoothly and seemingly have loads of processing power left, then suddenly it's choking because one track's got a ton of hungry plugins on it."
Yeah, I don't really have the time to look this up, as cpu is not an issue for my i7. Just don't actually see anything being sourced from the info 'RaboontheBaboon' suggests.. It's as good as me suggesting it's an average across all cores.. a random person on a message board.. I was hoping you knew of something from Ableton.. not that I doubt the validity of RaboontheBaboon.. just don't see how it's a fact from his post
Try it yourself open your OS's CPU meter and watch as you play an Ableton song. They won't be the same unless you have a single core.
I've done some testing and whatnot in the past regarding hyperthreading/cores.. guess my post above should have said average of active cores, since I know live doesn't use hyperthreading/use all cores at all times.