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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can ubuntu 20.04LTS support gen14/13 intel core and rtx4060 now?

I'm going to buy a new pc with i5 14400F and rtx 4060, but worrying that ubuntu 20.04LTS doesn't support the hardware, I can't find exact support info for my situation. I have to work on ubuntu 20.04 ...
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Chrome Browser consuming CPU in Lununtu

I have been running Lubuntu on one computer for a few years. Performance has really degraded over the last few months and when I run the qps monitor, I see chrome consuming most of the CPU. When idle ...
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CPU not using all threads

CPU monitor Terminal For some reason my cpu is only using 2 threads when starting a game/process. rest of the threads just stays unused, The cores and threads are all enabled. I configured my power ...
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High CPU usage in whm without any real user

I'm experiencing high CPU usage on one of my cPanel-hosted websites despite having no active users according to Google Analytics. When checking with 'htop' in the shell, I noticed that the process '...
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KVM not supported shown in terminal while it is enabled

Can you let me know what I am doing wrong to install the KVM in Virtual Machine Ubuntu that I see the error of "CPU does not support KVM extensions"? I am running a Linux (Ubuntu 22.04.3 LTS)...
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Flickering display on Ubuntu 22.04.3 when intense CPU usage

I am the happy owner of a Dell Precision 5540 with Ubuntu LTS since end 2020. Everything was going perfectly well until 2-3 weeks ago. Now when I have intense CPU usage (data analysis, or Kerbal Space ...
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Apache server unresponsive due to multiple instances of process

Good day, I have a VPS server with LAMP setup. As a couple of days I have a huge spike in process and I don't know how to investigate this cause. Here is the output of the htop command https://ibb.co/...
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Setting CPU frequencies with cpupower has no effect

I tried it on desktop Ubuntu 22.04.3, 23.10, regular and lowlatency versions. I have to increase the minimum frequency of a core, which runs an image capture process requiring high CPU clock. Here is ...
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Keep CPU under a certain temperature

Distro & Computer: Ubuntu 23.10, but I am willing to switch distros. Acer ultralight laptop with AMD 7735U processor. Is there a way to throttle the CPU based on temperature? Whenever the computer ...
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How to isolate cpu and ram for specific task. I already use "isolcpus" in the Grub setting to limit my CPU, but it does not get desired result

The main issue is to calculate the execution time of my algorithm, which is run in Python, and get a fixed execution time for each execution of the algorithm on the same data. I use the same data on ...
Dharmendra Thapa's user avatar
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How to get logs/evidence of illegal hardware changes during laptop repairs

I'm on Ubuntu 20.04. I sent my laptop for repair and I find out that the CPU has been changed to a cheaper version without my consent (and I was not requesting to fix the cpu at all!), basically from ...
LuckyMan's user avatar
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Constant CPU Frequency at Base 1.1 GHz on Intel Pentium Silver N5000

I'm experiencing an issue with my ASUS x507ma laptop, which is equipped with an Intel Pentium Silver N5000 (Gemini Lake) processor. On various Linux distributions such as Ubuntu, CentOS, or Debian, ...
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Dock extension causing high gnome-shell CPU usage

I am running Ubuntu 22.04.3 LTS on a Dell XPS13. Ever since upgrading to 22.04, I've had trouble with gnome-shell using excessive amounts of CPU (upwards of 80-90%). In order to pinpoint the problem, ...
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Why am i having multiple (40 or 50) instances of game servers when i type htop?

Hi this is my first post, thanks for taking the time to view/assist. Hypervisor: Proxmox VM OS: Ubuntu (headless)22.04.3 Here is the issue. I'm running a game server and noticed an unusual large spike ...
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Measuring Percentage using Pressure Stall Information (PSI)

Can I measure the percentage using the PSI of CPU stall time? the command gives the percentage for 10, 60, and 300 sec. However, I am using the total field of it. how to calculate the percentage of ...
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indicator-cpufreq unable to choose powersave

I'm on Lenovo G50 laptop, Lubuntu 22.04. I installed indicator-cpufreq. When I run it (I'm using i3) I'm unable to switch it to powersave. It always switches back to performance. Can I fix it?
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What in Kubuntu could be limiting available cpu cores? (only half are utilized in Plasma)

I am running Kubuntu 22.04.3 LTS on a 12-core/24-thread AMD Ryzen 5900X. The problem I am having is that many tasks running in KDE/plasma appear to be limited by CPU affinity to only 12 of the 24 ...
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Regarding the bug message when installing Ubuntu 20.04.6

Physical machine configuration: cpu:i7-6700k Motherboard: Gigabyte B150M-VP Motherboard bios version: F1 Memory: Kingston 16G 2133hz Storage: Kingston SSD512G When I used a USB flash drive to install ...
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taskset dose not change CPU allocated to process

I changed CPU affinity of a process with taskset sudo taskset -cp 0-10 2275 pid 2275's current affinity list: 0-10 but PSR of this process dosn't changed ps -o psr -p 2275 PSR 51 as I know after ...
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MOUNT.NTFS consuming almost 100% CPU when sf2 or sfz file loaded on Bitwig Studio 5.0 from internal SSD

MOUNT.NTFS process is consuming almost 100% CPU when sf2 or sfz file is loaded on Bitwig Studio 5.0 from an internal SSD. Not just for files which are big but even for small files like 10 MB, MOUNT....
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How can I track down seeming performance issue

I have two similar laptops, both thinkpad P series. I will outline their specs: New Laptop: Intel(R) Core(TM) i7-12850HX (16 core 24 thread) 128GB DDR5, 4TB SSD (2x2TB) Ubuntu 22.04.3 LTS Old Laptop:...
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Case and CPU fans would randomly spin slowly or stopping alltogether

My case and CPU fans would randomly stop spinning, or spin down (few hundred RPM) then stopping completely. It occurs every few days, the most recent event occurred approximately 1hr after resuming ...
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why does Ubuntu throttle my CPU 9° sooner than what crit says?

When stress testing with mprime small FFTs the CPU temperatures should reach at least 95°C, but they appear to get throttled at approx 89°C even though sensors correctly report that the "crit&...
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This simple script chewed up a lot of CPU, why?

I have a remote machine I need to keep an eye on. It's running Ubuntu Studio 22.04 (KDE Plasma). A few weeks ago it crashed and journalctl showed a "Bug" that occurred a couple minutes ...
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Network interface interupt binding not working as expected

I am on Ubuntu 20.04.6 LTS, numa with 2 node, each node has 64 physical cores. I have bind all interrupt for a network interface on cpu 64, 65, as lspci -vvvs <bus-info> shows my network ...
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dmidecode and GNU parallel not seeing cores

We are upgrading from Ubuntu 18.04 to 22.04 on an m5a.large system in AWS (two vCPUs). We installed GNU Parallel from the Ubuntu repos. On Ubuntu 18.04: # parallel --number-of-cores 2 On Ubuntu 22.04:...
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Why sum of this 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 53.3% means CPU utilization is 52.7% but, sum of CPU% of all the process listed (Image cropped for CPU% > 0.0) is more than the ...
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Ubuntu 22.04 which sensor temperature is the CPU? [duplicate]

The sensors command lists the temperature of various components in the system, but which one is the CPU? How to link these labels with system components? sensors ...
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How to tune CPU Usage granularity?

It is about getrusage. It works well but precision/granularity is not precise enough. It does not depend on CPU and its performance. Depends on kernel only. For actual kernel 4+ the precision is 3800 ...
Professor Pro's user avatar
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Upgrading CPU made Ubuntu slow

I upgraded cpu 3900x to 5950x and the main Ubuntu 20 guest machine I am using became slow. I see tearing when dragging window. I have 128GB of ram 80dedicated to this guest. Storage is on NVME.
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ASUS Vivobook 14 Overheating Issue on Ubuntu 22.04 with Ryzen 7

I'm encountering an issue with my ASUS Vivobook 14 M1402IA-AM173 running Ubuntu, equipped with 16GB RAM and a Ryzen 7 4800Hs processor. Just to clarify, I'm using the default power management settings....
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Can't get CPU temperature

I'm having trouble getting the temperature of the CPU. I tried using lm-sensors, but it does not find any module (I did the configuration and kmod start). I checked the local files located here: /sys/...
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How cpu core frequencies, percentage cpu and memory utilization, processing load and temperature affect app performance?

I am trying to benchmark two machines for my app. Two machines differ mainly in their peripheral connections and have same processor, memory and secondary storage. I did four different types of runs: ...
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fsicapd command has high cpu load while idle

The CPU load of my computer is high without me doing any major activity (even if I am not using it at all). The computer fan is running at high power to try to cool down the computer. When I check ...
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Why my CPU frequencies high but application performance is poor

I have two similar raspberry pi running Ubuntu with little difference in their configuration. I am trying to monitor their performance for running my application. So I am running my app on both ...
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cpufreq-set not taking effect on fixing CPU frequency on ubuntu 20

I need to set a fixed frequency on my CPUs for a research project. I'm using Ubuntu 20.04.5 LTS (GNU/Linux 5.4.0-155-generic x86_64) and an intel CPU Xeon W-2155 3.3GHz. I'm trying to use the ...
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Ubuntu 22.04: xfce4-panel shows high cpu, possible fix?

When using xfce as GUI for ubuntu 22.04 I sometimes get high CPU usage according to htop, sometimes over 60%. I use Ubuntu 22.04LTS and xfce4-panel 4.16.3 (Xfce 4.16) I have searched the internet, but ...
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Ubuntu 22.04 : Laptop don't wake up after suspend

I have a problem on an Asus VivoBook 17 on Ubuntu 22.04 (clean install) Everything seems to work fine, except suspend mode : after, the computer doesn't want to do anything : black screen (as in ...
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Explain different sensor on psensor

What sensor here shows the GPU temperature? I figured Tctl and Tccd1 is CPU, but I could not find online what the other sensors are for. I would greatly appreciate if someone could explain them in ...
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Ubuntu 22.04 - CPU constantly running too hot at 90°C

the output of sensors is constantly looking something like this with regular spikes over 90°C or 95°C for multiple seconds. This does not seem healthy for the life of the CPU. I am using a ThinkBook ...
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Exceptionally low CPU performance [22.04.2 LTS]

got a new machine to work with GNUradio (all dependencies met, worked on a few other machines before just fine), yet it runs so slow that it's impossible to work with (especially FFTs). Did CPU ...
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How many physical CPU sockets can ubuntu desktop support?

I was wondering how many cpu sockets Ubuntu would be able to support because im picking up a new server soon and would like to test some software on it, thanks!
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Fan speed always at maximum, how to solve?

Suddenly during use the fan starts and stays at maximum. I notice from the report below that the temperature is very high. How can I isolate the problem? inxi -Fxpmzr System: Kernel: 5.19.0-45-...
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CPU overheating, Ubuntu, 92C

just moved from Windows to Ubuntu, installed some tools, porting my c++ app in a few days my laptop feeled overheated Sensors output below https://ctxt.io/2/AABQ-PCsEg I measured temperature on ...
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How to change the default temperature from Celcius to Fahrenheit in Kubuntu?

I've recently switched from Windows and installed Kubuntu and I was wondering if there was any way to change the CPU temperature in the System Monitor and any widgets to F instead of C? Any help would ...
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How to prevent thinkbook 16 laptop from underclocking and staying at low temperature?

Recently I have purchased Lenovo Thinkbook 16 G5+ IRH with Intel i7-13700H processor. While I was stress testing CPU on AC, its frequency reached 4.0GHz for a short time and hit 90C, and then it ...
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How to get the machine specs from the terminal?I [duplicate]

Is there a quick way to get the machine specs from the terminal? (GPU model, memory, CPU model, memory etc). I am getting the info bit by bit by different commands such as lscpu and lspci but cant get ...
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Suspicious file under /usr/bin in Ubuntu 20.04

I have seen one of the process consuming 40% of the CPU. Up on check there is a file /usr/bin/ujwjzppyff running with "grep -A" command. file /usr/bin/ujwjzppyff /usr/bin/ujwjzppyff: ELF 32-...
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Only three options for CPU frequencies in Ubuntu 22.04 (AMD Ryzen 3 5300u)

I tried installing indicator-cpufreq to set a custom frequency, but I am only getting three options(image bellow). options in indicator-cpufreq Also, I tried running this in terminal: cat /sys/devices/...
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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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