Questions tagged [cpuinfo]

cpuinfo is a virtual file located in the /proc filesystem. When accessed, it provides real-time information both about unchanging hardware characteristics of the CPU, and about how it is currently running (most notably, what clock speed it or each of its cores is at).

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Wrong number of cpu cores in /proc/cpuinfo

I am running Ubuntu 18.04 server. I have an Intel i9 9980xe CPU, which has 18 cores and 2 threads per core. But it shows that the CPU has only 15 cores in /proc/cpuinfo as well as in htop. Why? Here ...
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enable all cores

With 2 x 10Core Xeon V2 processors (18.04 LTS), I see only one core maxed out (out of 40 cores), with most of them idle at ZERO load in Resource Monitor. I would like to enable ALL cores for this ...
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How to get possible CPUS in Ubuntu 14.04 or 16.04

I have a process which is pinned on core 1. I have written the below function to get the affinity. count_cpu_cores() { long int n_cores; n_cores = sysconf(_SC_NPROCESSORS_CONF); if (...
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which info is the true about cpu cores?

i have a question about my actual number of cpus on my machine. Different methods give me different results... htop shows 4 cores working lscpu | grep CPU\(s\): shows 4 cat /proc/cpuinfo | grep ...
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High CPU Usage - No command

I've had an issue over the last few days with high CPU usage. It's at a very constant ~60%. I have tried using htop to identify the culprit, but unfortunately the command section is blank (as below) ...
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Hyper threading is not working on Ubuntu 16.04 [closed]

I am running Ubuntu 16.04.4 LTS as main and only OS on my Intel Xeon E5-2666 v3 desktop, and the CPU supports hyper-threading (HTT). However, I can see that hyper-threading is disabled when I use the ...
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Is there any Widget that can show my CPU and other performances live?

I am ubuntu user currently working on Image Processing Project, I need to have a constant look at my CPU and Ram usage which is shown in system monitor very clearly but I have to switch between system ...
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CPU governor not adhering to CPU Min/Max settings

Tried to force CPU to run at max speed after it refused to do so under times when CPU usage definitely should be at max, did so by manually setting governor to 'performance'. This didn't work, CPU ...
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How to get cpuinfo to show Turbo frequency? [duplicate]

How do I get the frequency of my CPU when it is turbo boosted to show up in cpuinfo?
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How do I get the model name of my processor?

I am making a conky config and I want to display the CPU model as one of the stats. For this, I need a command that outputs just the CPU name as a string, for example, "Intel Core i7 7700K". I think ...
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How do I get conky to display the CPU frequency per core in GHz?

I am trying to get Conky to display the CPU frequency per core, but it only displays it for the first one. I know I can get a frequency in MHz, but how would I get it in GHz?
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Ubuntu 14.04 - Processor details is empty

while installing ubuntu via JetPack [ it's Nvidia Jetson TX1 embedded board - supports full OS installation ] the processor details as shown in the image below is empty. the OS keeps hanging and ...
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Ubuntu 16.04.1 does not detect AES-NI on my cpu

I recently upgraded my CPU from a Pentium B950 to an i5-2520M. The intel page says that my new CPU supports their aes extensions, but both /etc/cpuinfo and cpuid say that it doesn't. Other than that, ...
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Getting information about CPU

I am new to the world of Linux and Ubuntu. I want say get maximum information about CPU. (cpufreq , no. of cores, no. of threads per core, instruction set, size of caches, instruction set, ...
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Why does “top” show some processes running longer than the system's uptime?

I've got a problem with my system where phantomjs remains running after finishing its job. To debug this issue, two days ago I rebooted the system: Today when I ran top, I saw this: If I understand ...
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CPU scaling: how can current frequency be out of min-max range?

I'm trying to understand why my CPUs don't run at higher frequencies (related link) Can someone explain me how is it possible that when a min and a max are defined, the effective value finally goes ...
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View size of CPU cache through the command-line?

How do I view the size of my CPU cache using the command-line? I want to view information on L1, L2 and L3 cache. Also, would it be possible to ouput only information on cache, so that all other ...
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How to find the number of CPU cores including virtual?

How do I find out the number of cores my CPU has, including virtual cores (hyper threading cores) using the command line?
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My CPU clock speed is changing constantly. Is it normal?

I am running Ubuntu 14.04 on my laptop, and whenever I run cat /proc/cpuinfo | grep "MHz" I get varying speeds. I thought that clockspeed is a fixed property, which can be under clocked or ...
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KVM installation & Prerequisite

Before Installation of KVM we have to check our processor support visualization or not and we run a command i.e: egrep -c '(vmx|svm)' /proc/cpuinfo Which gives output 0/1/2/3/4 depends on processor ...
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System Monitor showing incorrect number of CPUs

I'm currently running Ubuntu 14.04.2 Desktop. The System Monitor tool is showing me 32 CPUs when I'm expecting 56. Should I be concerned? Screenshot of System Monitor: As you can see, it shows 32 ...
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AMD APU-A4-5000 processor issue

I have recently installed Ubuntu 14.04 on my Toshiba Satellite C50D-A 40010 Laptop (PSCGYG-00J00J). My AMD A4 processor's speed is 1.5GHz but Ubuntu shows it as 800MHz. dharmesh@home:~$ cat /proc/...
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Does my computer have 1 or 2 CPUs? (cpuinfo and lscpu differ)

When I run cat /proc/cpuinfo I get the following output (only the relevant line included): cpu cores: 1 However, lscpu gives me the following output: CPU(s): 2 Which of the two is correct, and ...
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Why does /proc/cpuinfo say “cpu cores: 2” on an AMD FX-4100 Quad-Core Processor

I'm trying to figure out how to interpret my /proc/cpuinfo. I've got an AMD FX-4100 quad-core and cpuinfo gives, as it should, 1 'physical id', 4 'core id's and 4 'siblings', but why does 'cpu cores' ...
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Minimum and maximum cpu frequency are equal

I just noticed my laptop stared working considerably slower. I am using an updated 13.04, though the issue did not start right after the upgrade. After tracking down the issue I noticed that both ...
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Screenlets RingSensors has to many CPU sensors, what are they?

I just installed screenlets to get some onscreen information about my system. I'm trying the RingSensors screenlet to monitor cpu load, but there are more sensors available to monitor than I'd expect. ...
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Power USB at certain CPU temperature

I have an unusual server set-up. Basically, I have a combination of salvaged parts from 3 Powerbook G4s running a non-graphical distribution of lubuntu. Problem is, I'm better with hardware than the ...
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Ubuntu System monitor shows 4 cpu while I have 2 cores

Acording to my laptop website and intel website, my CPU is Intel i5-2410M Processor Number i5-2410M Cores 2 Threads 4 Clock Speed 2.3 GHz Max Turbo Frequency 2.9 GHz so I have two cores, but ...
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Request about description regarding cpuinfo [closed]

Hi we all know that cat /proc/cpuinfo will provide us , but my request is i want to know the description about all the fields over there . I am giving you my PC information here. I think its not off ...