How many cores do I have?

elzorro · Jan 30, 2017

How to find out how many cores my processor has on my VPS Linux hosting and Windows 7 on my PC? I want to have a fast check on a new VPS or new PC.

LJSHost · Jan 30, 2017

Linux

Code:

cat /proc/cpuinfo | grep processor

Windows

Open the task manager and select the performance tab to see how many cores and logical processors your PC has.

eva2000 · Jan 30, 2017

above cat of /proc/cpuinfo

or just use top command

type top and then while top is running hit the numeric key = 1

if you want to save the all core display format, while still running top and after hitting = 1 key, hit the upper case W key to write the new display format to settings file permanently.

that will expand to cpu display to all cpu cores available.

example with W key written saved expanded cpu core output for top - 8 cpu threads from cpu0-7

Code:

top -bn1
top - 13:56:49 up 7 days, 11:08,  1 user,  load average: 0.22, 0.32, 0.23
Tasks: 157 total,   1 running, 156 sleeping,   0 stopped,   0 zombie
%Cpu0  :  0.2 us,  0.1 sy,  0.0 ni, 99.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu1  :  0.2 us,  0.0 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu2  :  0.2 us,  0.0 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu3  :  0.2 us,  0.0 sy,  0.0 ni, 95.7 id,  4.1 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu4  :  0.2 us,  0.0 sy,  0.0 ni, 99.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu5  :  0.2 us,  0.0 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu6  :  0.2 us,  0.0 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
%Cpu7  :  0.2 us,  0.0 sy,  0.0 ni, 95.7 id,  4.1 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem : 32908752 total, 26703280 free,  1358996 used,  4846476 buff/cache
KiB Swap:  2095096 total,  2095096 free,        0 used. 30977140 avail Mem

elzorro · Feb 2, 2017

LJSHost said:
Linux

Code:

cat /proc/cpuinfo | grep processor

Windows

Open the task manager and select the performance tab to see how many cores and logical processors your PC has.

[root@server ~]# cat /proc/cpuinfo | grep processor
processor : 0

It display 0 core?

eva2000 said:
above cat of /proc/cpuinfo

This seems worked

Code:

[root@server ~]# cat of /proc/cpuinfo
cat: of: No such file or directory
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : QEMU Virtual CPU version (cpu64-rhel6)
stepping        : 3
microcode       : 0x1
cpu MHz         : 2933.436
cache size      : 4096 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 4
wp              : yes
flags           : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm
bogomips        : 5866.87
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

eva2000 said:
or just use top command

type top and then while top is running hit the numeric key = 1

if you want to save the all core display format, while still running top and after hitting = 1 key, hit the upper case W key to write the new display format to settings file permanently.

that will expand to cpu display to all cpu cores available.

example with W key written saved expanded cpu core output for top - 8 cpu threads from cpu0-7

Code:

top -bn1 top - 13:56:49 up 7 days, 11:08, 1 user, load average: 0.22, 0.32, 0.23 Tasks: 157 total, 1 running, 156 sleeping, 0 stopped, 0 zombie %Cpu0 : 0.2 us, 0.1 sy, 0.0 ni, 99.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu1 : 0.2 us, 0.0 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu2 : 0.2 us, 0.0 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu3 : 0.2 us, 0.0 sy, 0.0 ni, 95.7 id, 4.1 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu4 : 0.2 us, 0.0 sy, 0.0 ni, 99.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu5 : 0.2 us, 0.0 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu6 : 0.2 us, 0.0 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu7 : 0.2 us, 0.0 sy, 0.0 ni, 95.7 id, 4.1 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 32908752 total, 26703280 free, 1358996 used, 4846476 buff/cache KiB Swap: 2095096 total, 2095096 free, 0 used. 30977140 avail Mem

When i hit 1 it display this

Code:

Tasks: 120 total,   1 running, 119 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.0 us,  0.3 sy,  0.0 ni, 99.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.3 st
KiB Mem :  1883860 total,   297788 free,   342072 used,  1244000 buff/cache
KiB Swap:  2097148 total,  1999316 free,    97832 used.  1235032 avail Mem

or

top - 22:45:20 up 49 days, 8:56, 1 user, load average: 0.03, 0.27, 0.67
Tasks: 118 total, 1 running, 117 sleeping, 0 stopped, 0 zombie
%Cpu0 : 0.3 us, 0.7 sy, 0.0 ni, 98.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.3 st
KiB Mem : 1883860 total, 298912 free, 340884 used, 1244064 buff/cache
KiB Swap: 2097148 total, 1999316 free, 97832 used. 1236228 avail Mem

My VPS has 1 core?

eva2000 · Feb 2, 2017

should be

Code:

cat /proc/cpuinfo

but yes if you see Cpu0 only = 1 cpu thread/core

LJSHost · Feb 2, 2017

Correct, it does start counting from 0 so 0 is 1 core 1 would be 2 cores etc.

laurence · Feb 6, 2017

LJSHost said:
Linux

Code:

cat /proc/cpuinfo | grep processor

Windows

Open the task manager and select the performance tab to see how many cores and logical processors your PC has.

This worked and easily know a CPU with many cores
Here's one 4 cores I checked with your code
Just curious why it started from 0 (processor)

Code:

[root@lren ~]# cat /proc/cpuinfo | grep processor
processor       : 0
processor       : 1
processor       : 2
processor       : 3

eva2000 said:
above cat of /proc/cpuinfo

or just use top command

type top and then while top is running hit the numeric key = 1

if you want to save the all core display format, while still running top and after hitting = 1 key, hit the upper case W key to write the new display format to settings file permanently.

This worked with many details when I pressed 1 with top command

Code:

[root@lren ~]# top
top - 04:59:33 up 48 days, 23:28,  1 user,  load average: 0.24, 0.24, 0.21
Tasks: 156 total,   1 running, 155 sleeping,   0 stopped,   0 zombie
Cpu0  :  0.0%us,  0.3%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu1  :  0.3%us,  0.3%sy,  0.0%ni, 99.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu2  :  0.7%us,  0.3%sy,  0.0%ni, 99.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu3  :  0.7%us,  0.3%sy,  0.0%ni, 99.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   3924152k total,  3545628k used,   378524k free,   240996k buffers
Swap:        0k total,        0k used,        0k free,  2445164k cached

HostingWaves · Mar 2, 2017

To check total CPU cores and their usage, you can run top command and press 1. It will list all cpu cores and their usage. You can also check total CPU cores using : grep processor /proc/cpuinfo

AlbaHost · Mar 2, 2017

just type:

nproc

How many cores do I have?

elzorro

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LJSHost

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eva2000

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elzorro

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eva2000

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LJSHost

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laurence

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HostingWaves

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