[Xcode9b1] Consumes 3-500% CPU sitting idle at "Welcome to Xcode" window - would have liked to know what it was doing

Originator:markd
Number:rdar://32581603 Date Originated:6/5/2017
Status:Open Resolved:
Product:Developer Tools Product Version:Version 9.0 beta (9M136h)
Classification:Performance Reproducible:Didn't Try
 
Summary:
Launched Xcode 9, did not open any projects. System CPU consumption at 300% to 500%, MBP fans running pretty loudly.   After letting it sit idle for 10+ minutes it seems to have calmed down. It would have been nice to know what it was doing, some kind of activity indicator.

See attached movie.

Steps to Reproduce:
Launch xcode.  It presents the welcome to xcode window.  WatchCPU climb.

Video attached.  Thought I had taken a sample, but I hadn't.

c.f. rdar://29884107 - it'd be nice to have a button to push to collect relevant information that would be useful for you. I bet that any sysdiagnose would be too late for anything useful.

Expected Results:
.

Observed Results:
.

Version:
Version 9.0 beta (9M136h)
10.12.5 (16F73)

Notes:



attachment: idle-cpu.mp4

Comments


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