Questions tagged [cpu]

CPU stands for Central Processing Unit, and is the main processing chip used in every computer. Brands include Intel, AMD and ARM. CPUs are commonly available in 32- and 64-bit, and come in a variety of frequencies or with multiple cores.

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Ubuntu flqvour eqsiest on cpu

I have this macbook air from mid 2011 and I want to use an ubuntu based distro on it. At the moment I'm using kubuntu but my one problem is that my cpu sometimes has alof of difficulties keeping up ...
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Disabling CPU frequency scaling Ubuntu 20.04

I'm using Ubuntu 20.04, and following this tutorial to disable CPU frequency scaling. I have done: sudo systemctl disable ondemand sudo systemctl enable cpufrequtils sudo sh -c 'echo "GOVERNOR=...
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No CPU/GPU temp

Since the upgrade to 22.04, my CPU/GPU temps are not available. When attempting to configure the widget, only disk drives appear. It would be nice to monitor the temperature again. CPU: AMD Ryzen 3 ...
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How to change maximum allowable CPU frequency?

I want to permanently change the maximum allowable CPU frequency as some code changed it so I am constantly overheating my CPU. Can someone help me out with this problem? My changes to the new maximum ...
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How can I turn on cgroup v2 CPU controller on modern Ubuntu?

On Ubuntu 22.04, I get: # cat /sys/fs/cgroup/cgroup.controllers cpuset memory hugetlb pids rdma misc I really need cpu contoller. Could you, please, help on how to enable it?
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Is it normal behavior for processor speed to quickly throttle, ignoring PL1/PL0 constraint power limits?

I recently got a Gigabyte Areo 17 i9-12900hk, and have put Ubuntu 22.04 kernel 5.19 on it. I ran s-tui to run it through a quick stress-test and found some odd processor behavior that does not happen ...
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CPU Loongson works with Ubuntu?

Ubuntu supports that CPU? Someone tried how works? https://en.wikipedia.org/wiki/Loongson
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CPU usage when GUI is on vs GUI is off : Ubuntu 20.04 and Raspberry pi 4

Myself going to use Raspberry pi 4 (8gb ram) with ubuntu 20.04 installed in it, for my projects using ROS. I will use the GUI for some main debugging purposes, or else I would stop the GUI and prefer ...
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Have can I "disable" these local timer interrupts after isolating cores?

I am trying to isolate CPU cores from the scheduler and any other unwanted activity. I have already set a few parameters on the kernel command line and updated grub: cat /proc/cmdline BOOT_IMAGE=/...
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Ubuntu 22.04 LTS consuming high CPU and RAM on HP EliteBook x360 1040 G7

I am experiencing an issue with my HP EliteBook x360 1040 G7 that's running Ubuntu 22.04. For the past few days my PC has been consuming high amounts of CPU and RAM, causing it to overheat and display ...
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Two conditions in if statment

I'm struggling in if statment I want the message "The system is highly utilized" pops whenever the memory usage or cpu usage exceeds 70%, now i tried the following 2 conditions in if ...
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How to fix cpu being throttled to 800 MHz on Dell Precision laptop?

How would you get your CPU to reach the maximum frequency when it's being throttled to 800 MHz? After upgrading my Ubuntu distro a few months ago, on a Dell Precision 5520 laptop, I noticed it became ...
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How to monitor cpu and memory usage?

How to write script monitoring cpu and memory usage then prints a warning when usage is 70% (red warning)? EDIT: cpuUsage=$(top -bn1 | awk '/Cpu/ { print $2}') memUsage=$(free -m | awk '/Mem/{print $3}...
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Make indicator-cpufreq start automatically with "Performance" mode Xubuntu 22.04

Every time the system is started, the mode is reset to "schedule". I need the mode to always be set to "Performance". In other words: so that the change of mode to "...
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How to disable frequency boost and hyperthreading

I'm trying to disable both hyperthreading and frequency boost to benchmark some code. Because I cant find anything about this on the BIOS, I ran lscpu to get some information about the CPU (AMD Ryzen ...
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High CPU used and battery drain First tracker and now Isolate+. What is happening?

I have an HP Elitebook. Few weeks ago I started to hear the fan working often. Using top I noticed that "tracker" was using almost all of the CPU. I fixed with a solution someone posted here:...
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cpu max frequency is actually the base frequency

analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us ...
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GZIP process takes CPU usage 100%

GZIP uses 100% of the CPU. I tried using pstree -apl to get which processes needed the GZIP, and I found Logratate. Have some people experienced this? And how did you solve it?
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Ubuntu 22.04.1 throttling cpu from 4000mhz to 400mhz-1000mhz even under high load

My main laptop runs Ubuntu 22.04.1 on an Intel Core -7-11370H CPU @ 3.300GHz. I usually use it to code and play games, but whenever I run the laptop, it just randomly fluctuates from 4.0 GHz to 800 ...
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ERROR When attempt to run Linux VM on Mac (VERR_UNSUPPORTED_CPU) [duplicate]

My Ubuntu version is Ubuntu Desktop 22.04.2. My OS is macOS Monterey 12.2. I am a complete beginner to Linux and im trying to learn a bit more about it since it's a very in-demand OS. When I attempt ...
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Display Alseye M120 Plus temperature on the command line

I'm newbie in this forum, although I've been using Linux flavors longer than a decade now. I have decided to give a fresh looking to my hardware and got an RGB CPU fan which has a little screen to ...
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Ubuntu Frame - wpe-webkit-mir-kiosk high CPU consume

Good Morning, I installed correctly Ubuntu-Frame on my machine, I used the Ubuntu documentation to do it, It worked fine, and it was easy to do, in fact I did it with a RP4 the last time and works ...
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Why sum of all process CPU(%) is greater than total cpu(%) utilisation in top command [duplicate]

In a top command instance, the CPU utilisation (100-idle) was 14% but the top most process "Chrome" alone consumes 253%. I am unsure of how the chrome process consumes CPU more than 100%. ...
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Cannot see Ryzen 7700 integrated gpu driver - ubuntu 22

Is it a rule that AMD on Linux always has problem?. I am testing the latest ubuntu 22 kernel however it can't see the graphics card instead in the Display section I have Unknown Device so I can't even ...
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Why sum of all process CPU(%) is not equal to total cpu(%) utilisation in top output

In the attached image of top command output, you can see the idle is 96.8% means CPU utilisation is 3.2% but, sum of CPU% of all the process listed (Image cropped for CPU% > 0.0) is more than the ...
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Mongo DB crash by a peak of the CPU Ubuntu 18

Update: As requested I am using 18.04.2-Ubuntu and about the MongoDB I have a virtual machine running several Node JS projects and a local instance of Mongo DB. The virtual Machine has only 2 GB of ...
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WSL2 Ubuntu 22.04.2 LTS Performance Mode

Is there a way to set WSL2 Ubuntu 22 to performance mode? I know the original version of the OS you can just set it to performance mode but I'm not sure how to do it through WSL2. When I run grep &...
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After reboot a lot of processes ran in the isolated cpus

This question is migrated from stackoverflow since it was marked as off-topic there I am running ubuntu 22.04 with kernel vmlinuz-5.19.0-35-generic. I isolated a few cpus by editing /etc/default/grub ...
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Which version of ubuntu I can/should install to my computer? [duplicate]

My computer has Intel(R)Pentium(R)[email protected] processor, 4GB RAM, 64bit
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How to disable AMD turbo boost in 22.04?

so the problem is I cannot disable cpu boost. I have tried cpupower to change the governor or to lock cpu frequency on the specific numbers but idk when it needs to use these boost states it just sets ...
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How do i control my CPU fan for Lenovo ideapad Z710?

my cpu has been idling at about 60 degrees celcius. and when running Minecraft, it goes up to around 85. this is causing the entire ubuntu 22.04 jammy jellyfish system to freeze until forcefully shut ...
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Incomplete turbo boost on all cores in Ubuntu 22.04 and 22.10

I have an HP laptop with Core i5-8300h and it almost doesn't use all-core turbo after couple minutes after boot. When I run a single threaded task, it maintains frequencies of 3.5-4 GHz, but as I run ...
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pmd high CPU usage

For a couple of days my laptop has been consuming a lot more power than before, noticeable by how fast the battery runs out when not plugged. This is matched by periodic (~20-30s) fan noise spikes ...
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Ubuntu 22.04 support for 12th gen Intel CPU

I am running Ubuntu 22.04 on a laptop with Intel 12th Gen CPU, with 8 p-cores and 8 e-cores. The CPU supports 24 total threads, 2 for each p-core and 1 for each e-core. Ubuntu identifies the model of ...
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Only 2 cpu out of 16 in i7 are being used for heavy task in ubuntu

I am using ubuntu 22, with an i7 12th gen gpu with 16gb ram and Nvidia rtx 3060 gpu with 6GB vram. While doing heavy tasks such as gaming I have observed in the activity monitor that only 2 CPU out of ...
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Gnome shell uses excessive amounts of CPU?

I'm running Ubuntu 22.04LTS, with only the Built-in extensions (i.e. Desktop Icons, AppIndicators and Dock) installed. Since updating to 22.04 I noticed that my mouse would begin to stutter frequently,...
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CPU is overheating and Ubuntu is not working

My CPU is overheating and Ubuntu is not working. cpuidInfoAMD says : NVRM cpuidInfoAMD: Unrecognized AMD processor My CPU is running very hot. It is an AMD Ryzen 5 5600x. My GPU is a Nvidia 3060 12GB. ...
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Performance governator sets the speed limits to low?

Running cpufreq-info I get the following outputs on one of my cpu's analyzing CPU 15: driver: intel_pstate CPUs which run at the same hardware frequency: 15 CPUs which need to have their ...
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How to change kernel boot parameters?

I need to turn CPUIDLE Off on Ubunto 20.04 The instructions I have are: "Disable CPUIDLE via the kernel command-line in grub:" linux /boot/vmlinuz-4-19.0-16-rt-amd64 cpuidle.off=1 How do I ...
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Why is Snap Firefox using so much cpu time?

Firefox and other browsers use a lot of CPU time and memory, however, since forcing us to use Snap Firefox, CPU time is through the roof. Way too much CPU time when viewing Youtube and other video ...
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CPU overheating in ubuntu 22.10

I updated my ubuntu 22.04 to ubuntu 22.10 but now i have a problem. In previos version my maximum cpu's temperature was 40° but in this version Suddenly the temperature rises to 80° then my fan speed ...
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CPU bugs in Ubuntu 22 on Imac Late 2009

I need some help bringing a late 2009 Imac from the dead, I managed to install Ubuntu 22.04 (I'm new to the OS), and fixed Nvidia card problems, then I runned the cpu info and found this information: ...
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Unable to limit CPU speed on Ubuntu 22.04 with cpufrequtils

Based on this: How can I easily control CPU speed on Ubuntu? I try to manually force some of my CPU cores on Ubuntu 22.04.1 5.15.0-56-generic x86_64 GNU/Linux to be limited to 800 MHz using cpufreq (...
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Laptop slow, missing Performance Power Mode & unable to change cpu governor

I recently noticed one of my Ubuntu Laptops had started to run very slow. After doing some searching here for tools to check CPU status and comparing with another PC with the same version I can see ...
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after changes in CPUQuota my system became very slow

I changed the CPUQuota=50% so that my system could use mimimum CPU resources but due to these changes my system became very very slow could anyone please help me to revert these changes and bring my ...
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Ubuntu 22.04 fan speed / CPU performance too low

My laptop (Dell Precision 7560, i7-11850H, Ubuntu 22.04, kernel 5.17) really felt sluggish, so I ran Passmark and to my shock the results were abysmal. Compared to the average, single threaded was ...
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Correct way to tune CPU governor's parameters?

Looking for explanation on how to change the parameters of the CPU governor on 22.04 and that they stick after a reboot. I am talking about the governor's parameters like "sampling_rate", &...
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Abnormal CPU usage in power save vs performance mode

CPU usage increases when I change to power save mode, and decreases when I change to performance mode. What can cause this? Here is a video to demonstrate: https://www.reddit.com/user/Faditt/comments/...
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PSI Full IO / PSI some IO meaning in htop

In the above screenshot, i examine a large white bar in the CPU Avg chart. Additional, i see PSI full IO/PSI some IO quite large. I assume the white bar is IO wait of some sort. What exactly does PSI ...
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CPU usage on dual socket motherboard

Ubuntu's system monitor shows CPU usage for each core separately. I have a motherboard with two CPU sockets and want to know how much CPU on socket0 is loaded and how much CPU on socket1 is loaded. ...
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