CODEWITHSUNDEEP
iosxcodemacosperformance
Richard Wessels
Richard Wessels

Reputation: 347

Xcode is running really slow

I've recently tried to use Xcode 8 to make iOS apps and to test things in Swift however it is impossible to work on as doing a simple 'print("Hello World")' takes easily over a minute to process to print it to the console, I tried doing regular development as well by creating UI buttons etc. but when I try to compile it, it is too slow to work and that is with simple things. My computer is the Mid 2012 Macbook Pro Non-retina with 4GB of RAM, not a quick computer but I can program in Python without these problems. If anyone knows some solutions please tell me! Thanks.

Upvotes: 23

Views: 35613

Answers (3)

Mark Bokaeian
Mark Bokaeian

Reputation: 21

Go to Window/Devices and Simulators/uncheck Connect Via Network

Upvotes: 2

Priyanka Jadhav
Priyanka Jadhav

Reputation: 111

Same issue for me. I had execute these instructions two times before the app would launch without hanging for a minute.

  1. Unpair your phone from xcode
  2. Launch xcode with your phone not plugged in
  3. Plug your phone in
  4. In xcode, under devices, unpair your phone
  5. Stop xcode
  6. Run the following commands
  • rm -rf ~/Library/Developer/Xcode/iOS\ DeviceSupport
  • rm -rf ~/Library/Developer/Xcode/iOS\ Device\ Logs
  • rm -rf ~/Library/Developer/Xcode/DerivedData
  1. Start xcode
  2. Plug phone in

Upvotes: 7

Mike
Mike

Reputation: 1735

When you build a project for the first time do it normally (it will take a while like you described)

After the first build Go to Product -> Scheme -> Edit Scheme. Select Build in left side column and uncheck Find implicit dependencies.

This appears to be a well known problem: https://forums.developer.apple.com/thread/62737

"If there's not enough context to decide, the compiler has to go with the conservative choice and record it as cascading."

Upvotes: 29

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