Xcode 8.3 - SourceKitService CPU 95%+ loads

Question

Hi all iOS developer buddies, I updated my Xcode to 8.3 yesterday. And start from then, my MacBook fans kept running continuously. I opened 'Activity Monitor' and found that the SourceKitService took 95%+ to 130%+ CPU load. But I didn't even build my xcode project, I just opened it for code referencing (for Android).

Does anyone have any idea, how to tweak the settings to lower the CPU load?

Answer 1

Me too ~

When I encounter this problem.

I found that there are multiple threads SourceKitService .

Kill the SourceKitService thread that use CPU higher.

And then clean the xcode project and clean Build Folder.

solved

Answer 2

I found out the problem and fixed it finally.

If you upgraded your Mac SSD(In my case, I brought a OWC Aura SSD for my late 2013 mbp.), you need to check if TRIM is enabled or not.

You can enable it by typing sudo trimforce enable in Terminal.