Just got a new MacBook Pro with OS X Lion and updated to 10.7.1. I've seen the BTServer process cause high CPU utilization twice now. One morning I also noticed that the fan was running loudly while the lid was closed and the computer was locked up; I had to force power it off. Anyone seeing similar issues? Doing a search for BTServer on Google or even here in the Apple Support Communities does not bring up anything related to Lion at all, only iPhone-related articles.
yup, i had this problem too. i have a new 2.2ghz macbook pro and while at a coffee shop, i noticed my battery draining very quickly, and a look at activity monitor showed that BTServer was running away with high-cpu utilization. i killed off the process and didn't notice any loss of functionality.
not sure what it was supposed to do with so much freaking cpu cycles!!!
is this for bluetooth? i dont even have bluetooth on. im not happy about this having to be something i'd need to keep a eye on when i'm trying to maximize my battery life.
I'm having this same probem myself on a new MacBook Air running 10.7.1. I'm a developer as well, so that makes sense if it has something to do with the iOS Simulator. Hopefully Apple will update the software soon to fix this problem. In the meantime, I've just been using Activity Monitor to quit the BTServer process. My fan slows down right away when I do.
Just confirming I have this issue, too. And that killing BTServer works.
I have noticed this since installing Xcode 4.2 w/iOS 5 beta 6. It has occurred on a MacBook Pro running Snow Leopard and a MacBook Air running Lion, so it seems OS-independant. Also, the iOS simulator is not necessarily running at the time of high CPU usage, but has been launched since rebooting. Sometimes, simply relaunching the simulator does the trick.
Cool down, little Air, coooool down.
I recently noticed the same issue, and a lot of the supporting details match - dev working a late build (aug 2011) xcode 4.2, running iOS simulator. BTServer doesn't always start going crazy, but on my 2010 macbook air it will occasionally start taking up 150-170% cpu in activity monitor, and I'd kill the process to good effect.
Tried quitting iOS simulator and that does the trick as well. I just wish there was a way I'd get notification that it's going crazy sooner than waiting for the fan to start ramping up and the battery draining.
Just had this problem, and I have indeed launched the iPad simulator since rebooting my machine. I was doing some coding work in the morning, went to lunch and had some meetings, came back to find my machine running at 97º C (!!) and the fans both raring away at 6,000 RPM. Killing btserver in the Activity Monitor quickly brought things back down to normal.
I'm on 10.7.1 and Xcode Developer Preview 4.2 Beta 7.