IMPORTANT ANNOUNCEMENT: On May 6, 2024, Carbon Black User eXchange (UeX) and Case Management will move to a new platform!
The Community will be in read-only mode starting April 19th, 7:00 AM PDT. Check out the blog post!
You will still be able to use the case portal to create and interact with your support cases until the transition, view more information here!

Endpoint Standard: XCode 12 Slow build times with sensor installed

Endpoint Standard: XCode 12 Slow build times with sensor installed

Environment

  • Carbon Black Cloud Web Console: All Versions
  • Carbon Black Cloud macOS Sensor: 3.3.4.6 and higher
  • Apple macOS: 10.14 and higher

Symptoms

  • Slow build times
  • Slow system performance

Cause

  • A kernel feature that allows the sensor to safely unload KEXT without requiring a macOS reboot, introduces a performance issue when synchronizing low level operations in Apple XNU code
  • Although this feature has been present since macOS 10.6, our investigation shows that more recent macOS internals changes exacerbated this interaction in macOS 10.14 and higher

Resolution

If experiencing the issues above, the following bypass rules are recommended:
/Users/*/Library/Developer/Xcode/DerivedData/**
/Applications/Xcode.app/**

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Creation Date:
‎03-02-2021
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