Mac OS X 10.11.1: cfprefsd thrashing and apparently causing missed keystrokes
||Date Originated:||25-Nov-2015 04:44 PM|
|Status:||Duplicate of 23362398
||Resolved:||19-Jan-2016 04:55 AM|
||Product Version:||Mac OS X 10.11.1 (15B42)|
Every day or two, I will find that I can’t type well because the system keeps missing keystrokes. They don’t get queued up and then sent to the screen all at once; they just vanish.
Steps to Reproduce:
1. Try to use my computer for more than two days without rebooting.
Keyboard input stays fluid.
Keyboard input gets slow, to the point where I have to reboot. Looking in Activity Monitor, I see cfprefsd (the one owned by root) bouncing between 2-4 and 60-70% CPU every few seconds. When I reboot, cfprefsd is not doing this, and I can type. Thinking they could be related.
In this tweet: https://twitter.com/Catfish_Man/status/669627206956511232 David Smith says that it may be related to blued. I’m using Knock to Unlock (knocktounlock.com), which uses Bluetooth to let you unlock your Mac with your iPhone. I restarted Knock to Unlock on both Mac and iPhone, and cfprefsd is now steady at 0% CPU, so maybe that’s related? Including the results of sudo spindump cfprefsd, which as far as I can tell was captured while the problem was occurring.
Spin dump also posted here: http://cl.ly/dvIn
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