After compile Xcode continues to use max cpu

Originator:neoneye
Number:rdar://12436597 Date Originated:20121004
Status:Open Resolved:No
Product:Xcode Product Version:4.5.1 (4G1004)
Classification:Other bug Reproducible:Always
 
Summary:

Heavy CPU usage starts the first time I build&run on device or on simulator.
Heavy CPU usage continues until I exit Xcode.

If I stop running the app does not affect CPU usage.
 
CPU usage remain high no matter what I do.
 
I only have 1 project open at a time. It doesn't matter what project I work on.

There is no heavy NSLog output going on.

I also experienced this with Xcode 4.5.0.
 
There was no problems with Xcode 4.5 DP1 nor Xcode 4.4 nor earlier versions of Xcode.


Steps to Reproduce:
Start any Xcode project up.
Hit CMD+R.
Approx 10 seconds after compile is done Xcode starts using max cpu on all cores.

Expected Results:
Low cpu usage.

Actual Results:
Max cpu usage and fan spinning at max speed.

Regression:

Notes:
It may be related to these issues
http://openradar.appspot.com/11986168
https://discussions.apple.com/thread/4149298?start=0&tstart=0
Except I have little NSLog output.

Comments


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