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241 votes
Accepted

What is this qemu-system-aarch64 process and why is it using almost 3 GB of RAM on my M1 Mac

This process belongs to an application you've installed yourself. To find out more, select the process in Activity Monitor and press Cmd-I to open the Process Information window. You should see the ...
nohillside's user avatar
  • 102k
159 votes

What is this qemu-system-aarch64 process and why is it using almost 3 GB of RAM on my M1 Mac

It was Docker for Mac! There is no clear name indication that this is a Docker process, so you can't clearly spot it in the Activity Monitor unless you use View -> All Processes, Hierarchically or ...
140 votes

Can I see my CPU and memory usage meters in the menu bar?

One that hasn't been mentioned yet is Stats, which describes itself as a Simple macOS system monitor in your menu bar It's an excellent open source project (https://github.com/exelban/stats) that ...
friederbluemle's user avatar
79 votes
Accepted

Activity Monitor columns missing

You can reset your Activity Monitor settings by quitting Activity Monitor, and then deleting the preferences file, and any preferences lock files, and then re-opening the app. Open Terminal and paste ...
JBallin's user avatar
  • 11.8k
73 votes

Why are there so many valid users on macOS?

This is the principle of least privilege. The principle means giving a user account or process only those privileges which are essential to perform its intended function. For example, a user account ...
grg's user avatar
  • 203k
55 votes

VS Code - Code Helper process using more than 100% CPU on macOS

This is most likely an issue with a plugin in VS Code. For me, it was Pyright. How to check? Open Activity Monitor Within the list of prcesses, find the one that has the highest CPU usage (it should ...
Brad Ahrens's user avatar
37 votes

macOS - ntpd uses more than 100% of CPU

Go to System Preferences > Date and Time and uncheck Set date and time automatically. Close System Preferences, then reopen and re-check Set date and time automatically
Radu Simionescu's user avatar
33 votes

Can I see my CPU and memory usage meters in the menu bar?

Check out iGlance it's open source.
BenRoe's user avatar
  • 534
32 votes

What is the ApplicationsStorageExtension process on macOS?

Did you leave About This Mac open with Storage selected? I think ApplicationsStorageExtension calculates how much storage your Mac is using. To stop it: Choose About This Mac from the Apple menu  (...
ma11hew28's user avatar
  • 669
31 votes

Activity Monitor columns missing

The "Process Name" column is too big, causing it to crowd out the other columns pushing them to the right side. You can manually resize the "Process Name" column by enlarging the Activity Monitor ...
amsr's user avatar
  • 411
21 votes

what do App Memory, Wired Memory, and Compressed mean?

This wonderful Apple Support article says it all: https://support.apple.com/en-us/HT201464#memory I'll give the short version here: There are three different types of memory, as you have noticed - ...
perhapsmaybeharry's user avatar
18 votes
Accepted

How to find out process owner of unidentified windows?

Download and install Xcode. When installed open Xcode. In the menubar go to Xcode > open Developer tool > Accessibility inspector In the Access..Inspector menu go to Inspection > Enable point to ...
Chris Eneman's user avatar
18 votes
Accepted

Howto see disk I/O utilisation per process - iotop and pidstat not available in Homebrew on macOS

iotop is available in macOS/OS X itself. iotop relies on dtrace though and you have to disable SIP in systems like El Capitan/Sierra to run dtrace. Check man iotop for options and then execute iotop ...
klanomath's user avatar
  • 66.7k
17 votes

VS Code - Code Helper process using more than 100% CPU on macOS

Killing processes on mac with kill -9 [PID] and restarting VSC helped me to solve the problem. if not, refer to https://github.com/microsoft/vscode/issues/11963#issuecomment-317830768 adding the ...
Danylo Bilokha's user avatar
16 votes
Accepted

View big.LITTLE cores on htop or similar utility

Pull core information using powermetrics, monitor with your favorite tool. However, be wary, and consider if it's worth the effort. Identifying P/E cores Unlike on iOS, this is thankfully quite easy ...
JMY1000's user avatar
  • 5,297
13 votes
Accepted

What is the Unknown (0) process with 232 threads on my iPhone?

pid 0 is always kernel_task in xnu. Further corroborated by being owned by root and having a lot of threads. It’s a synthetic process structure that represents the kernel. It isn’t malware.
pion's user avatar
  • 4,876
12 votes

VS Code - Code Helper process using more than 100% CPU on macOS

In my case it was Settings Sync v3.4.3. Once i disabled it, the problem is gone ! Screenshot of the extension attached (just disable or uninstall this).
delphirules's user avatar
11 votes

Process "warmd" keep busy mac after upgrading to macOS 10.14.4

Have a read of the following; Provisioning OSX and disabling unnecessary services It has instructions on how to disable warmd. I can not confirm they are still relevant at this stage as I myself am ...
Dan's user avatar
  • 211
11 votes
Accepted

Why is my external HDD active when I'm not using it?

It's probably the 'Spotlight' indexing that is busy indexing the drive 's content.
Dakta's user avatar
  • 670
11 votes
Accepted

What built-in utilities are available in macOS for managing/monitoring process/disk/memory/IO/file?

There are a lot of tools, both in the graphical interface and at the command line, for viewing and configuring these various parts of macOS' operations. I'll give you a summary of the most relevant ...
Gordon Davisson's user avatar
11 votes

What is `oahd-helper` and why is it eating my CPU?

This oahd-helper is the ahead of time compiler for Rosetta. Essentially what you are doing is causing it to scan a large volume of programs and compile / cache the translated code for Rosetta to run ...
bmike's user avatar
  • 238k
9 votes

icdd process consuming substantial memory on macOS

I have been working with a senior technical advisor at Apple on this issue for over a year, and was working with another senior advisor for some time before that. We have done "data capture" to send ...
datatoolbox's user avatar
9 votes

Howto see disk I/O utilisation per process - iotop and pidstat not available in Homebrew on macOS

sudo fs_usage -f diskio it's not the same as iotop, but it comes with the OS and you don't have to disable SIP. From the man pages: The fs_usage utility presents an ongoing display of system call ...
Picard's user avatar
  • 201
9 votes
Accepted

iCloud Sync activity log

You can use brctl like brctl log --wait. When it stops showing messages it's synced. There seems to be a lot of options and little information. This blog post might be helpful
Jonas Stensved's user avatar
9 votes

Process "warmd" keep busy mac after upgrading to macOS 10.14.4

It's supposed to "warm" the cache with your most frequently accessed applications and files. If you have a "spinning rust" disk drive instead of an SSD, I can imagine that it may hurt more than help. ...
Wilfred Smith's user avatar
9 votes
Accepted

Why can I not maximize Activity Monitor to full screen?

Each application can opt in or out of full screen mode. From Apple's perspective, Activity Monitor is an "instrument", like a calculator or a multimeter, for example. You can test it on your ...
bmike's user avatar
  • 238k
9 votes
Accepted

"financed" process in Activity Monitor

As with many of the launchd processes, the manpage gives the answer: % man financed DESCRIPTION financed financed supports passd in managing Apple Pay and Wallet operations. It cannot be used ...
Andy Griffiths's user avatar
8 votes

Can I see my CPU and memory usage meters in the menu bar?

I created a free app that shows percentage on the menu bar: You can download it from here: https://github.com/joelmora/macos-activity-monitor
Joel Mora's user avatar
8 votes
Accepted

How to resume a "paused" application after an out of memory situation?

Not in front of my mac right now, but basic steps would be: Open the Terminal application: just type Terminal into Spotlight List the running processes : ps -ax Find the process you want to unpause. ...
Rostol's user avatar
  • 490
8 votes
Accepted

Processes in Activity Monitor with gray lettering

Your screenshot is heavily cropped, but I presume you're on the Energy tab instead of CPU or Memory. The Energy tab shows recent applications (not all processes) and displays their Average Energy ...
grg's user avatar
  • 203k

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