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Questions tagged [cpu]

The CPU (Central Processing Unit) is the part of a computer that performs tasks instructed by the computer programs. Its role is somewhat analogous to that of the human brain; it performs simple mathematical, logical, and in/out operation of the machine.

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chmod using 100% CPU resources

Since upgrading to High Sierra (now at 10.13.6) on my Mac Pro 2012, I experience regular episodes where the process chmod eats up ~100% on all 12 cores. It happens about 15 seconds after logging in ...
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finder won't launch after Mojave upgrade ( high system cpu )

it appears my finder will not launch after I upgraded to Mojave. It is always unresponsive. My system cpu load is constantly around 75% also. I am unable to relaunch it even if I do a force quit ...
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Problem with kernel_task

It's about 3 days that I can't do anything with my macbook air because the kernel_task is eating up the CPU. So I found this but the command csrutil disable/enable doesn't work on the terminal (El ...
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1answer
48 views

Kernel CPU usage shows more than 100%, temperature low, fan speed high [duplicate]

The activity monitor is showing strange things, like kernel CPU % usage being way above 100%, between 200% - 1.000%. At the same time the cooling fan is running at max speed and the CPU temperature ...
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1k views

How to disable or remove the YaraScanService (MRT.app)?

Recently on MacOS 10.13.6 I have noticed high CPU usage and identified the process YaraScanService as consuming close to 90% CPU. The Activity Monitor lists it under: /System/Library/CoreServices/...
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2answers
165 views

External monitor causes very high CPU usage

I have an external LG 27UD69P-W monitor connected (via HDMI) to my late 2013 MacBook Pro, which causes the CPU usage of the Mac to go extremely high (kernel_task > 400%, sometimes much higher even), ...
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37 views

MacOS and Binary/CPU [closed]

This question applies to all operating systems and hardware, but I was curious what is going on behind the scenes when you install an OS on hardware. I know that macOS comes preinstalled on Macbooks, ...
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+100

loginwindow high CPU usage

I have simple zsh script which executes the following code at a regular interval. spotify_track=`osascript -e 'tell application "Spotify" to name of current track as string'`; This is causes ...
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1answer
52 views

CPU speed of the Macbook Pro Retina downclocked

I've a MacBook Pro 15" late 2013. For a long time I have encoded videos with handbrake and the CPU was very hot for hours. The clock speed was about 2.8GHz (I have the 2.3GHz model) and the ...
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29 views

Expected CPU usage for Mac sound cards

My Duet sound card driver (duetUSBDaemon) constantly pulls 5-10% CPU, making it the number one consuming process on my machine. CPU: 1,7 GHz Intel Core i7. sysctl -n hw.ncpu says 4. $ while true; do ...
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How to know what is causing high CPU?

Here is the problem. Pages is causing me a High CPU but one of two things may be causing it: Pages is using memory, computing something or moving/searching stuff on memory. Pages is using the disk. ...
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75 views

Macbook performance issues with browsers

I have a MacBook Pro from 2013, and I'm having issues in both Chrome and Firefox - both are slowing down to a crawl, and when I check Activity Monitor I have multiple processes (in all the 'tabs' at ...
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245 views

xClient process consuming CPU — what is it?

Basic question, I can't find anything on Google about it. There's a process that keeps my fans spinning, and consumes about 80% cpu. xClient -- what is it, or how can I find out more about it?
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Macbook air when watching youtube at 1080p60f fan goes full speed google chrome using 180% of cpu

I have a Macbook air 13inch mid 2011 running macOS High sierra. when I am watching youtube at 1080p 60 fps my Macbook air fan runs at nearly full speed. As you can google chrome is sucking 120% of my ...
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Is there a way to see current CPU frequency in macOS from terminal (not Intel power gadget)

I am aware of these answers: https://stackoverflow.com/questions/9948987/detect-current-cpu-clock-speed-programmatically-on-os-x View the current clock Speed of a CPU in OS X? Which refer to Intel ...
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1answer
49 views

Why is Adobe Acrobat using only one core for a heavy task, and how can I make it perform faster?

Adobe Acrobat is performing Optical Character Recognition on a document with thousands of pages. This is a heavy task which will take hours. Activity Monitor tells me that Acrobat is only using one ...
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1answer
99 views

Mac Mini powerful enough to play any 1080p movie? [closed]

I have a Mac Mini (Mid 2011) with 2,3 GHz Intel Core i5 8 GB RAM with SSD, that I use to watch videos. The machine is great in all respects, except if I play 1080p encoded with H265 or VP9, the fan ...
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What could cause a huge spike in Unix System Calls for a process and how to debug

Computer Stats Mac mini (Late 2014) 2.8 GHz i5 8 GB RAM 10.13.5 High Sierra (upgraded from Sierra this week while debugging this issue) Background I recently noticed that a certain tab in Chrome ...
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kernal_task is taking all processing & slowing down Macbook Pro mid 2015 [duplicate]

I know this question has been asked and answered before but none of the solutions worked for me thats why I'm asking a new question. I have MacBook Pro Mid 2015 From few days I've encountered a ...
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1answer
113 views

Mid 2010 MacBook Pro kernel_task extremely high CPU usage (150%+) lags and kernel panics

I recently acquired a 2010 13" MacBook Pro. When attempting to boot to a Leopard installer on a USB drive, I am greeted with a kernel panic. There is no specific error message but instead prompts me ...
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31 views

CPU frequency drops to 1.0ghz when its temperature is just fine(74 degrees Celsius)

When I use Compressor to forge a video, the frequency of CPU drops to 1.0ghz. It doesn't make sense. Macbook pro 13, 2017, without Touch Bar
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UserEventAgent sucks CPU

This question is related to: What causes the UserEventAgent to run with 100% CPU usage? I am running on a MBP late 2012 on High Sierra. I observed this problem after the update from Sierra. I have ...
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MacBook Pro high CPU with external monitors

I recently ordered two 4K monitors (LG 27UD88). I connected them using Mini DisplayPort to DisplayPort Adapter cable to my MacBook Pro. When I have the monitors connected, the CPU load is very high ...
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1answer
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Are these normal temperatures?

I just got a new MacBook Pro 2017 128GB no-touchbar, bought it in the refurb. I'm doing a bit of Photoshop ( I know it's not the best MBP, but I really need it right now for work ) and I have Safari (...
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sharedfilelistd and distnoted hog CPU

I understand from my findings on the topic that sharedfilelistd is an "agent that is used by applications to read/modify recent documents/servers/hosts" and distnoted a "distributed notification ...
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Missed keyboard inputs in Slack and Bear but not in other apps

My late-2013 13" MacBook Pro recently started missing some keyboard inputs in some applications, particularly Slack and Bear, and especially (but not only) when I'm in a Google Hangout video call. ...
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3k views

Crashpad_Handler using +100% CPU

First of all but not my main question how can something use the CPU for more than 100%? My main question is how can I get rid of it? Is it safe to force it to stop? I think it's a Google Chrome ...
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350 views

high cpu utilisation by /usr/libexec/sharingd

Recently I upgraded my High Sierra machine to version 10.13.4 but ever since the CPU load has been high. On running htop it showed /usr/libexec/sharingd to be consuming most of the CPU. Is there a way ...
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399 views

MacBook Pro 15" 2015 CPU throttles down to 0.8 GHz

My MPB has had this problem for years every time the ambient temperature gets a bit warmer. It starts in the spring and gets ridiculous during the summer. The MBP clocks down its processor to 0.8 GHz,...
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2answers
611 views

High CPU and GPU temperature, high fan speed, low activity

Macbook Pro early 2011 model - 13" - running El Capitan. I've been seeing other people reporting this left and right and mostly they don't look at the activity monitor first. I can say I have and my ...
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1answer
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What is portProxy.bin and why is it sucking/eating/using up my CPU?

Through today, portProxy.bin has been eating up my CPU, constantly using about 60% and making the fans in my computer whizz up. I'm guessing it might be connected to my VPN use, but now I haven't ...
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1answer
2k views

Macbook Pro screen display problems

I am using a Macbook Pro (the 2015 model A 1398). Just overnight my screen shows strange horizontal lines as this: These horizontal lines are roughly gathered in the same place on the screen (on ...
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1answer
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Extracting CPUs from multiple MacBook Pro's

I have a couple old MacBook Pro's laying around and would like to put them to use. So here's the question. Would it be possible to extract the CPUs from the boards, and connect them to a single logic ...
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2answers
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How to enable process accounting on macOS

My Macbook Pro occasionally will use up high CPU and freeze after being left idle overnight. How can I enable process accounting so that I can track down the processes that consume most of the CPU?
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How to read CPU usage in Instruments.app

My iPhone is behaving slowly, so I am trying to watch CPU usage in Instruments.app on a Mac to see if any particular process is to blame. But the CPU activity in the "Activity Monitor" instrument ...
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systemd is using >150% CPU

I'm not sure what's causing it, but suddenly the systemd process just started using about 150% CPU (according to my iStat menu). I checked in Activity Monitor and it said the same. I checked the CPU ...
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2answers
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Why aren't my cores more busy?

just purchased a 2010 Mac Pro, running High Sierra. It has 12 lovely cores. But, when I look at the CPU activity in the CPU History half of the rows are blank (image below). Does this suggest one ...
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1answer
212 views

MacBook Pro integrated GPU drawing too much power when CPU monitoring app is running

Main problem: When I run an app that monitors CPU temperature, it rises from 40° to 76° in 3 minutes. Even though the CPU usage is 12%, CPU package power draw maxes out at 31W. I checked the clock ...
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2answers
4k views

MacBook Pro Late 2011 worth upgrading? [closed]

I recently bought an MacBook Pro Late 2011 with an i7 2.2 GHz and 4 GB of RAM. I wanted to get started in some mobile development and learn how to work with macOS. So this was a good offer online. ...
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2answers
440 views

Mac is using 100% CPU while it is OFF

I have a MacBook Pro (Retina, 13-inch, Early 2015) MacOS High Sierra 10.13.2 Sometimes my mac using a lot of CPU power. The usage is 75% of the system. But this occurred when I was away and the mac ...
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How to check if my iPhone was slowed down by Apple software update? [duplicate]

My iPhone SE suddenly started to be slower. I have also tried to reset to factory settings. I am wondering if I may be effected by Apple's decision to slow down devices with older batteries. How ...
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1answer
1k views

Mac OSX High CPU % Usage - Draining battery and heating!

For the past year I've experienced high CPU usage on CORE process (activity monitor) and also extreme heating, with cooling fans at maximum, draining my battery every single day. My home banking ...
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262 views

macOS issues on high CPU due to IMRemoteURLConnectionAgent - Mac Heating a lot [duplicate]

I'm pretty sure my Mac has his high cpu usage rates due to an error that keeps repeating itself all day. I took this info from /var/log/ but couldn't find the file at /system/library/LaunchAgents so ...
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4answers
25k views

What is “photoanalysisd” and why is it using 77% of my CPU?

We got a new iMac for Christmas and it has seemed really slow for the past couple of days. In desperation I checked out Activity Monitor and it shows photoanalysisd as the guilty process that is ...
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1answer
398 views

Why does Intel Power Gadget fully freeze the system?

I have installed Intel Power Gadget. When I've tried to start the app it fully freezes system. I then need to reboot. I have the problem with a MacBook Air (i7, 2012) with a clean install of macOS 10....
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1answer
41 views

CPU broken on my late 2013 Macook Pro. Is it worth replacing? [closed]

My computer keeps restarting and after taking it into the Apple store and a repair store, both are telling me the CPU needs to be replaced. The Macbook pro is a late 2013 and it's like a $500+ repair. ...
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3answers
2k views

macOS Sierra, kernel_task running taking more than 400% of CPU

After upgrading my MacBookPro to macOS Sierra, CPU is running very fast. When I tried to debug the issue, here is what I have found. Solutions that I have already tried. Reset SMC Reset PRAM Tried ...
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2answers
1k views

How to limit system processes cpu usage?

Some system processes like systemsoundservd, logd, diagnosticd, etc. recently use a lots of cpu on my macbook pro. How can I limit them to some degree because most of them are not too relevant to me? ...
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271 views

How to solve performance issue after upgrade to Mac OS X High Sierra?

I recently upgraded to High Sierra and after upgrading I've run into an issue where after the machine has been up for several days, the performance starts to get really bad. For example, when typing, ...
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3answers
5k views

Is it normal for a 27" iMac to have CPU core temperatures around 95C under 100% CPU load?

I have a 2017 27" iMac with a 4.2 GHz Intel Core i7. It's been having some issues lately where every now and then the entire system will gradually freeze, forcing me to hard reboot the computer. So to ...