cfprefsd thrashing

Originator:cpickslay
Number:rdar://29666735 Date Originated:15-Dec-2016
Status:Open Resolved:
Product:Mac Product Version:macOS 10.12.1 (16B2555)
Classification:Perfomance Reproducible:Always
 
Summary:
For the past month or so, the fans on my MBP are constantly spinning. When I check Activity Monitor, cfprefsd is almost always at the top of CPU utilization. I'd say the average value I see is 40%. I've tried killing cfprefsd and rebooting, to no avail. Based on this radar: http://www.openradar.me/23666465 and the referenced tweet by David Smith, I've generated a bluetooth diagnostic report, sampled blued and cfprefsd, and spindumped cfprefsd. All of those reports are attached.

Steps to Reproduce:
Use the computer for any purpose

Expected Results:
System processes should not be constantly running at high CPU utilization

Actual Results:
cfprefsd is frequently hogging the CPU


Version:
MacBook Pro (Retina, 15-inch, Late 2013)
2.3 GHz Intel Core i7
16 GB 1600 MHz DDR3
macOS 10.12.1 (16B2555)

Notes:


Configuration:
Seems to always occur

Comments


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