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how to get cpu information on Linux machine

Hi,

I want to display cpu information like model number, vender information, and how many cpu's are there in the system (Linux machine)

Is there any system call ? or /proc/cpuinfo is the only way

And also how get information regarding controllers and adapters installed on system(Linux machine) using any system call

Thanks and regards
laxmi

cat /proc/cpuinfo
cat /proc/meminfo
dmesg
lspci

Welcome to LQ :-)

How to get the same things using some system calls

do these not supply you with enough information?
what do you need it for?
does this not work?

Sorry, I want to store model number, vender information, and how many cpu's are there to some variables so that i can display same things on the browser

you can open this file /proc/cpuinfo from your C program, and store those vendor_id, model name fields in to variables. this is one way. this will require lots of string processing work.

/usr/sbin/./x86info -a

x86info is hardly a standard utility.

/proc/cpuinfo is the standard interface to the kernel's information regarding CPUs. It is the best option for getting the information you want. There are several scripts on here and other sites that show how to extract the relevant information.

Moved: This thread is more suitable in Programming and has been moved accordingly to help your thread/question get the exposure it deserves.

i agree with Nathanael

this is why

`cat /proc/cpuinfo`

Code:

processor      : 0

vendor_id      : GenuineIntel

cpu family      : 15

model          : 2

model name      : Intel(R) Xeon(TM) CPU 3.06GHz

stepping        : 9

cpu MHz        : 3057.662

cache size      : 512 KB

physical id    : 0

siblings        : 2

core id        : 0

cpu cores      : 1

fdiv_bug        : no

hlt_bug        : no

f00f_bug        : no

coma_bug        : no

fpu            : yes

fpu_exception  : yes

cpuid level    : 2

wp              : yes

flags          : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr

bogomips        : 6119.81



processor      : 1

vendor_id      : GenuineIntel

cpu family      : 15

model          : 2

model name      : Intel(R) Xeon(TM) CPU 3.06GHz

stepping        : 9

cpu MHz        : 3057.662

cache size      : 512 KB

physical id    : 0

siblings        : 2

core id        : 0

cpu cores      : 1

fdiv_bug        : no

hlt_bug        : no

f00f_bug        : no

coma_bug        : no

fpu            : yes

fpu_exception  : yes

cpuid level    : 2

wp              : yes

flags          : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr

bogomips        : 6112.78

what more do you need?

Here i cant see the unique cpuid how to retriew that cpuid?????????

Who are you?

CPUID is an cpu instruction .. look here for details http://www.paradicesoftware.com/specs/cpuid/index.htm

Although the best reading material are the manuals from intel's site Cheers

Though I'm not sure why you need the CPUID. /proc/cpuinfo contains all the information from CPUID, already decoded for you.

I actually have a similar problem. I'm trying to write a set of scripts for which I need to know the pentium-m cpu model of the current computer. That is, I need to know if it's p-m 753, p-m 725, etc. I can't find that information in /proc/cpuinfo. Is there a way to find that out?

Quote:

Originally Posted by Matir

i wasn't shooting for standard, more so toward another alternative to the already suggested methods, the guy asks for maybe another way beyond /proc/cpuinfo, i just threw one out there ;-p