Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [cpu]

The CPU (Central Processing Unit), is the chip in the computer that actually performs the operations and calculations that are done as a program runs. It is essentially what executes a program.

Use of this tag should be limited to general questions regarding:

  • the specific features and/or capabilities of a CPU
  • commands that can interact with the CPU to display its features
  • commands that show how many CPUs are present
  • show its model/type
  • can reconfigure it
841 questions
27
votes
5 answers

How do I know which processors are physical cores?

I've got an Intel i7 2700k here, and I'd like to know how I can tell which processors are physical and which are virtual (ie: hyperthreading). I'm currently running a Conky script to display my CPU temps, frequencies, and loads, but I'm not sure…
Naftuli Kay
  • 39,676
7
votes
7 answers

How can I count the number of CPU cores?

Of course we know cat /proc/cpuinfo |grep "cpu cores" will give an output [root@14:47 ~]# cat /proc/cpuinfo |grep "cpu cores" cpu cores : 2 cpu cores : 2 cpu cores : 2 cpu cores : 2 But actually I want to get the total…
yode
  • 1,047
4
votes
2 answers

Top c - CPU usage >200% Will it Crash?

I would appreciate some advice from your experience. My main concern is I really REALLY do not want to cause the computer server to crash. The question is, I am running a program on a Linux computer server (super-computer? Maybe.). The program I am…
helping
  • 41
3
votes
1 answer

Can there be a case while /proc/cpuinfo file has several different model & model name fields?

I want to create script gathering CPU info from the server. At the certain server output of file named in question title has 12 model and model name fields which are equally to each other. These case shown at the screenshot below. Are the 12…
palmasd1
  • 115
  • 1
  • 9
2
votes
2 answers

Single program run a year on 8-cpus machine

Suppose I have a 8-CPU machine, which run a single process and one thread program while True: report time every hour. The program run one year alive. During the passed whole year, did the program run solely on one core, or might visit every…
Wizard
  • 2,503
2
votes
0 answers

AMD Ryzen Threadripper 2970WX 24-Core Processor - per core frequency?

Got AMD Ryzen Threadripper 2970WX 24-Core Processor (on X399-AORUS-XTREME-rev-10 mainboard) to my workstation for a C++ project compilation, but even being super-multi-threaded - it is worse then my 5yrs old i7. $ lscpu Architecture: …
blech
  • 21
2
votes
1 answer

How to increase ksoftirqd usage for testing

I have developed an application to calculate the percentage of ksoftirqd usage per CPU core and I want to test this. I am flagging an alarm if the usage is more than 50%. To test this, I need to load the system in such a way that it increases the…
aditya uppuluri
  • 21
2
votes
1 answer

Am I understanding processors and cores right?

I purchased a Supermicro board with a D-1541. Intel ARK specifies it has 16 threads (and if you click the question mark, it says that is per core). My Debian install shows 8 cores, 16 threads total. So is it really 2 threads per core?
dkran
  • 23
1
vote
1 answer

Excessive CPU usage while running Facebook and few other websites

I am running Linux Mint 17 (Linux Kernel 3.13.0-71-generic) on my HP Envy 17j (Core i7, Quad core). The laptop runs normal while using any programs. But when I open facebook.com or similar sites (e.g. Ziptask.com), then it starts consuming excessive…
Sudip Kafle
  • 181
  • 1
  • 6
1
vote
1 answer

What does the term 'Unix Processor' mean?

I have Googled around and found a few references to this term, but nothing which defines what it actually means. Does anyone here have experience with such a device? What features must a processor have to be considered a 'Unix…
Graeme
  • 34,027
1
vote
1 answer

Overclocking software for Linux?

Is most overclocking done strictly at the BIOS level, or is there a way to do it from a running operating system? And if so, is there a way to do it from Linux? I'm running Ubuntu presently and am interested in overclocking to squeeze more speed out…
Naftuli Kay
  • 39,676
0
votes
0 answers

Switching from intel to amd without reinstalling software, is it possible?

I'm soon going to be upgrading my hardware and I'm planning on switching to an AMD processor. As I have plenty of stuff I'd really like to avoid having to reinstall my software, so I'm planning to change the CPU, MB and RAM. My question is, is this…
php_nub_qq
  • 331
0
votes
1 answer

Does loadavg affect CPU usage?

Does loadavg affect the CPU usage? Say I see a process consuming 60% of CPU time, both when loadavg (last minute) was 5 and 1, would it be the same?
daisy
  • 54,555
0
votes
1 answer

Why is my laptop getting high CPU load, when playing videos or discord screen sharing?

It doesn't happen always, when playing 1080p videos from FreeTube. Sometimes, it even happens when watching 240p videos (but it takes more time to happen). Although, it always happens when watching to high quality Discord screen sharing. I'm not…
surfboardcompound
  • 93
0
votes
0 answers

Change system properties(name) under linux

What I wondering can I change somehow under linux( ubuntu / redhat ) the name of processor like in windows by registry edition? What I mean is currently when I make cat /proc/cpuinfo I got ....snip.... vendor_id : GenuineIntel model name :…
S.I.
  • 435
1
2