Linked Questions

1 vote
3 answers
566 views

How can I force a crash report in OSX? [duplicate]

My MacBook Pro regularly gets into a state where a very lightly loaded system starts processing very slowly: mouse clicks and button presses take a few minutes to process and a couple of useful things ...
A. Phillips's user avatar
147 votes
2 answers
231k views

How to investigate high kernel task memory usage?

I was using my MacBook Pro (with 16GB of RAM) as usual and out of blue I've this popup that: Your system has run out of application memory. To avoid problems with your computer, quit any applications ...
kenorb's user avatar
  • 12.7k
80 votes
4 answers
228k views

Where can I find my crash logs?

Console prints: default 17:16:18.554342 -0700 ReportCrash Saved crash report for APP_NAME[50432] version 1.2.3 (4) to APP_NAME_2020-03-17-171618_MacBook-Pro.crash I would like to ask you, where ...
Arthur's user avatar
  • 1,578
45 votes
12 answers
62k views

How do I debug an out-of-control "kernel_task" process?

Just recently I noticed my battery life having a pretty significant drop and the "kernel_task" process using quite a bit of CPU (a constant 1-6% on my 2.8ghz dual-core i7, 2010 MBP). Obviously I think ...
Ricket's user avatar
  • 3,056
56 votes
6 answers
78k views

How do I clear the purgeable area on my disk?

I cleared space on my disk by deleting files and emptying trash. But, I am unable to make use of the space that I freed up. That is, as you can see the disk reports 142 GB as Available with 83 GB of ...
Josh's user avatar
  • 1,019
54 votes
6 answers
92k views

what is com.apple.coresymbolicationd in caches?

Doing some cleanup on my Macbook Air with a 128GB SSD looking for big files to reduce the space used. I found something named com.apple.coresymbolicationd that is 1GB in the /System/Library/Caches ...
REDGAR's user avatar
  • 709
22 votes
2 answers
37k views

How does 'stuck' (in results of 'top') relate to 'not responding' (in Activity Monitor), 'spin' or 'hang'?

In results of top commands, I sometimes see stuck. Apple's top(1) OS X Manual Page does not explain this use of the word. How, if it all, does stuck relate to the following? not responding – may ...
Graham Perrin's user avatar
10 votes
1 answer
14k views

Where are crash logs after a system freeze?

When your entire macOS freezes up and restarts, are there crash logs or core dumps to diagnose the problem? I would in particular like to know which kernel module was active at the time of the crash. ...
Jo Liss's user avatar
  • 323
11 votes
2 answers
16k views

MacBook Pro with Mountain Lion freezes frequently (full screen Flash in Chrome, Messages, HTC on USB)

Problems following an upgrade to Mountain Lion on a 13-inch, Early 2011 MacBook Pro (MacBookPro8,1 with Intel HD Graphics 3000). With Google Chrome, I was watching YouTube video fullscreen – Flash ...
Vivart's user avatar
  • 499
15 votes
3 answers
2k views

WifiDiagnostics files filling up drive even with logging disabled

Since upgrading to OS X Catalina, I started getting disk full notifications. After some looking, I discovered the cause is ~400 MB files in /private/var/tmp like this: WiFiDiagnostics_2019-10-23_12....
brett_f's user avatar
  • 333
3 votes
3 answers
9k views

MacBookAir kernel_task at 300% and rising [duplicate]

I have a MacBookAir5,1 connected to a Thunderbolt Display. When it gets very hot, PID 0 "kernel_task" uses ever more CPU until reaching 340% and slowing the Mac down sufficiently to make me restart ...
Andrew J. Brehm's user avatar
4 votes
2 answers
2k views

Mac use Cmd-Opt-Control-Shift-, (comma) as a hotkey

Is there a way to use CommandOptionControlShift, as hotkey? The same modifier keys (CommandOptionControlShift) work fine with letters, but I can't seem to make it do anything when using the , key. ...
Josiah Nunemaker's user avatar
2 votes
1 answer
5k views

Purge command - Unable to purge disk buffers, error #-2?

When I attempt to run the purge command, I get the same error every time. [ERROR] <CPDevice.c:3816> Unable to create new counter client. [ERROR] <CPOSX.c:1172> Unable to get user ...
ArbiterNST's user avatar
1 vote
2 answers
600 views

2010 Mac Pro beachballing/freezing

My machine is a 2010 Mac Pro 2 x 2.66 6-core intel xeon with 32 GBs of ram running Mac OS X 10.8.3. Just the other day it started to beach ball after about an hour of use. It doesn't make any ...
Stephen's user avatar
  • 1,381
4 votes
1 answer
2k views

Where Exactly are Apple Diagnostics Results Stored on Disk

I know that on macOS you can access the last run Apple Diagnostics test in System Information, as seen in the image below. You can also access reference codes in the Terminal using system_profiler ...
Jake3231's user avatar
  • 1,943

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