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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When I leave my Mac alone, it heats up and fans go wild [closed]

I could work for a several hours and fans don't work at all (temperature is about 70 - 75C). So I go somewhere for a 5 minute and when come back it is boiling! Sounds very loud but none of the ...
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What is the typical CPU utilization of idle iMac?

I am new to macOS. I recently purchased a 2019 iMac (Retina 4K, 21.5 inch). .OMMMMo OS: macOS 10.15.1 19B88 x86_64 OMMM0, Host: iMac19,2 .;...
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How do I get information specific to CPU core via command

Suppose we have one CPU with 2 cores. I seek dynamic scheduling information such as Processes, IO time, IDLE Time, System Time as allocated time specific cores as opposed to aggregated or averaged to ...
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How to evaluate different CPUs in 2019 MacBook Pro lineup (2-port vs 4-port)?

If I am looking at the only the 13" MacBook Pros of the 2019 lineup, I see that Apple offers different (non-overlapping) CPU choices depending on whether I start out with the 2-port or 4-port base ...
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Mail.app and accountsd are taking op all CPU Mac OS 10.15

I have suddenly (did not see when it is happening and when it is stopping) CPU peaks, which is coming from Mail.app and accountsd all together i did a screenshot of the activity monitor as well as ...
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Why is Chrome aggressively consuming CPU cycles?

I literally have 0 tabs open, and yet Chrome is consuming a very significant amount of CPU resources, and quickly draining my battery... Why?
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Serious Performance Problems using Expose in Catalina

Summary I am having a problem where using Expose to drag a window from one Space to another causes an enormous slowdown that looks almost comical - like the machine turns into a ouija board and load ...
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CPU Not completely Utilized in large workload

I have a Macbook Pro with a i9 Processor and running Macos Catalina. I run CPU extensive tasks daily, but it never utilizes 100% of the CPU. I use Intel Power Gadget to check out my CPU performance. ...
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accountsd eating up all CPU resources when wireless has no internet connectivity

it's a shame that the OS have degraded to this levels of breakage and bugs. There's a way to stop accountsd from eating up all my CPU when I'm without internet access in a wireless connection for LAN ...
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sysmond using 100% CPU usage, but only while on the Memory tab

I used to have no issues with this, but all of a sudden sysmond is using 100% CPU while I have Activity Monitor set to the Memory tab. sysmond runs normally while in any other tab (CPU, Energy, Disk, ...
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How do I get dSYM files for iTunes for Instruments analysis?

I'm helping a friend investigate poor iTunes performance and asked him to gather an Instruments profile. It captures iTunes using ~100% of CPU but symbols are missing for iTunes. How do I download ...
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Does battery condition have anything to do with macbook pro performance?

Hello I'm using a mid 2015 MBP. My battery lasts 1-2 hours now, I got this text Condition: Replace Soon on the battery icon. Other stuff are my computer sometimes heats up, gets really slow and ...
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Mysterious process 'phonetism' eats CPU and vanishes

My 2015 MacBook running Mojave has been acting strange lately, especially whilst browsing. Sometimes Safari will freeze up, or reload a page out of the blue. I can feel my computer struggling, so I'm ...
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Websites with heavy use of websockets skyrocket CPU usage in Safari

(Problem reported to Apple Jul 5, 2019 but I got no answer as of Aug 1, 2019) If you work for Apple please review FB6505912. I have sent to you system reports and Samples from the process. I am ...
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Limit mac CPU frequency without disabling Turbo Boost?

Intel mobile CPUs now have a really low base frequency and a high Turbo Boost freq, e.g. i5 2.4~4.1 GHz. Turbo at 3.8+ makes it go all the way up to 100°C. Using 'Turbo Boost Switcher' to disable TB ...
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“Harpulia” and “Javanese” processes cause high cpu usage [duplicate]

I'm wondering what is the purpose of "Harpulia" and "Javanese" processes (see screenshot below) Hi ! They're high in CPU usage (and make my macbook pro fans to be running loud) and they do not seem ...
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How to know how much CPU and RAM I need for new computer?

I got a pimped up macbook pro (i7 3.3GHz i7) from late 2016 atm, but I feel like I could use a less powerful machine. I would like to find out what's my current/peak average CPU and RAM usage to see ...
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Does the Mac mini (2018) support Intel Hyper-Threading?

I am using a Mac mini (2018) with a 3.0GHz 6-core Intel Core i5 processor. My understanding is that this chip has 6 physical cores. The Activity Monitor shows performance graphs for 6 cores. On other ...
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CPU frequency in Intel Power Gadget

Which core's frequency and temperature are shown by the Intel Power Gadget tool? How can I observe the frequency of all the independent cores on my MacBook? Can the Intel Power Gadget be configured ...
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Activity Monitor, my system always runs in the red for CPU load - how to fix?

According to Activity Monitor my system is always running too high for CPU load. It’s always in the red in the CPU load graph and nothing I do corrects this. I’ve tried resetting NVRAM, SMC and ...
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CPU completely occupied by strange programs with person names

Anyone knows why this happens and how to resolve it? they show up out of nowhere and stay until I kill each manually. some of these names change to something new too. I thought this might be because I ...
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CPU frequency very low during high disk I/O and more aggressive fan policy

model: MacBook Pro 15-inch 2018 macOS: Mojave 10.14.5 CPU: Intel i7-8850H Recently, I've observed a significant slow-down of the macOS during high disk I/O. Sometimes the CPU frequency would be ...
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How can I tell if my Mac CPU supports AVX?

Background info for my particular case (though it would be good if answers were more general): I have an 11 inch MacBook Pro. I'm trying to run MuJoCo but it says Illegal instruction: 4. Searching ...
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Are these temperatures normal?

I have a 13-inch, Mid 2012 Macbook Pro that constantly overheats. Normally, the only app I will be using will be Google Chrome and I will still experience these temperatures. But occasionally I use ...
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How to detect if someone running mining extension through my browser?

In another question about Chrome Helper not using as much CPU user Pavel Vlasov mentioned Invoke ⋮ Chrome Menu → More Tools → Task Manager to see what exactly consumes CPU. Because the helper is a ...
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What replaces x86 intrinsics for C when Apple ditches Intel CPUs for their own chips?

There are whole industries founded on the use of Intel Intrinsics for CPU parallelisation (with SIMD). For example, the community of Lattice QCD physicists depend on that for boost in the efficiency ...
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CPU usage more than 100% [duplicate]

I am having a serious problem with my Macbook Pro Early 2011. The fans keep running and running and the CPU temperature sometimes stays constantly at 95° C. When I have a look at the activiy monitor I ...
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Why does my Macbook overheat and use so much CPU and energy when on YouTube?

For a long time now, my Macbook has been overheating and hogging my CPU. According to Activity Monitor, Google Chrome Helper is the culprit. Whenever I am browsing the web, there are usually ten ...
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How to limit kernel_tasks CPU usage?

I would like to limit kernel_task's CPU usage on my computer. I provided cooling for my MacBook Pro, cleaned out the internals, and tried resetting the SMC multiple times. I haven't tried re-...
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cpu clock too low / force cpu clock / overclock

I have a MacBook from a few years back. When I use it write some code and browse the internet, the fans go very fast and the noise is horrible. But the temp shows only 70 C. So I used SMC to force ...
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yes takes CPU usage to 99% [duplicate]

Running yes > /dev/null takes my CPU usage to 99%. The Macbook Air 2018 have a 2 core CPU (1.6 GHz Core i5 [I5-8210Y]). Why is the "% CPU" taken by this process so high?
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Can't remove the heatsinks on a MacPro 3,1 (earily 2008), even though I have the screws out?

I have a MacPro 3,1 and the screen keeps going black and the fan starts blowing at high speed. I ruled out that it was my OS by running Clonezilla and attempting to clone the harddrive, and during ...
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How to throttle CPU on a Mac? [duplicate]

How to throttle CPU on a Mac? I want to throttle CPU so that I can extend the battery life on a single charge. Device: MBP 2015. Running Majove.
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Does macOS have a command to retrieve detailed CPU information like /proc/cpuinfo on Linux? [duplicate]

Linux has a command to retrieve detailed CPU information using cat /proc/cpuinfo. Using this command, users can get CPU and CPU's core information like below. processor : 0 vendor_id : ...
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VS Code - Code Helper process using more than 100% CPU on macOS

I noticed that my MacBook gets hot and noisy (fans) when using VS Code (v1.31). The Activity Monitor shows the process Code Helper using more than 100% of CPU. It started happening with one repository ...
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How to get time-dependent CPU usage logs?

Sometimes my MacBook pro 2017 starts rotating the fan very fast. It's hard to see if there is anything abnormal in the Activity monitor because it looks pretty much as always but the total CPU load. ...
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1answer
51 views

Ring fence CPU for a specific programme / process to stop it using to much

I've just had an app run my CPU (as viewed in activity monitor) to 102% whilst it was running a compiling and installation task. My machine was basically unusable as a result. Is it possible to ...
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What is `tic` and what can I do about it using 100% CPU?

I have a process named tic that occasionally shows its ugly face in htop or Activity Monitor, consuming around 100% CPU. I couldn't find any good info on it last time I tried. What is it for, what ...
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Does charging and CPU usage affect each other?

If I use the CPU heavily while charging a Mac, how much slower will the charging be? It would be interesting to hear if someone has data how many minutes it takes to: Charge 0-100% while using ~0% ...
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How come terminal processes are paused when display sleeps?

I'm running some long-running CPU intensive scripts, but I've noticed that the CPU utilisation becomes 0 when the display sleeps. I've already kept the machine awake using caffeine. Is this expected ...
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Is it possible to control the CPU core clocks on macOS?

I would like to have any direct control of CPU core clocks. Is this possible on new MacBooks and macOS ? I use Intel Power Gadget and Macs Fan Control tools for monitoring the CPU and fans speeds on ...
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Help me crash my Mac — beyond stress tests [duplicate]

My MacBook Pro has been crashing for months, at least once a day most days. I blame it on overheating seeing as it reached 100°C on several occasions when it shut down. Last time I took it to a ...
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Suddenly the “diagnosticd” daemon rise up to over 200% CPU usage

Suddenly the diagnosticd daemon rise up to over 200% CPU usage, even with Xcode is not running, on OS X Mojave 10.14.1 I can't figure out it. The fans become very noisy.
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System spiking CPU usage (causing 6000+ rpm on fans)

Im running a mid-2012 macbook pro on 10.9.5. I've been having massive lag spikes over the last few weeks which have gotten more consistent and prevalent the last day. I have been wearing this macbook ...
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Where does iostat get its information on mac?

Goal: update terminal command prompt with CPU usage statistics since last prompt appeared, e.g., jeremy@Mac:57%CPU|~/ $ Research: I know on Linux, iostat reads /proc/stat and looks for changes ...
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CPU cores have a temperature near 80 °C and then the fan starts to work. Can it be dangerous? (not for Core) [duplicate]

I have the same question, but about Core. This one I want to ask whether such a temperature is dangerous for other Components, then Core? I have read some advices to adjust Fan Speed, cause if you ...
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4k views

Messages and soagent making CPU spike - any solutions?

I've had my MacBook for 3 years and have never had this issue... Recently (maybe a month ago?) Messages and soagent are making my CPU spike. It sounds like my MacBook is about to take off into outer ...
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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 ...