问题
Ever since I upgraded to Xcode 9, my fan goes crazy when I'm working on Xcode. This is especially happening when I use Storyboards and Interface Builder.
Xcode sometimes takes up to 100% of the CPU and the process named "Interface Builder Cocoa Touch Tool" is also very greedy.
I read here and there that other people have had similar issues but I was wondering if anyone found a solution to this considering it's most likely a Xcode bug.
Things I've tried:
- Unplugging my second screen: no effect
- Rebooting Xcode: no effect
- Rebooting Mac: no effect
- Cleaning Derived Data folder: no effect
- Cleaning project: no effect
- Opening only 1x project at the time (annoying): a bit better but still not great
Did anyone find a solution to this issue?
Mac Config:
- MacBook Pro (Retina, 15-inch, Mid 2014)
- Processor: 2,5 GHz Intel Core i7
- Memory: 16 GB 1600 MHz DDR3
- Graphics: NVIDIA GeForce GT 750M 2048 MB Intel Iris Pro 1536 MB
Xcode version: 9.0 (9A235)
回答1:
Open your xibs/storyboards and turn off “Editor / Automatically refresh views”.
The issue is caused by Xcode continually rebuilding your project to update things like custom IB_DESIGNABLE views.
Trigger it manually via Editor > Refresh All views
来源：https://stackoverflow.com/questions/46633160/xcode-9-high-cpu-usage-fan-max-speed