Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Possible Duplicate:
Difference Between Cores and Processors

What do "processor" and "cpu cores" mean here?

cat /proc/cpuinfo 
    processor   : 0
    vendor_id   : GenuineIntel
    cpu family  : 6
    model       : 15
    model name  : Intel(R) Core(TM)2 Duo CPU     T5670  @ 1.80GHz
    stepping    : 13
    cpu MHz     : 1801.000
    cache size  : 2048 KB
    physical id : 0
    siblings    : 2
    core id     : 0
    cpu cores   : 2
    apicid      : 0
    initial apicid  : 0
    fdiv_bug    : no
    hlt_bug     : no
    f00f_bug    : no
    coma_bug    : no
    fpu     : yes
    fpu_exception   : yes
    cpuid level : 10
    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 nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts
    bogomips    : 3591.62
    clflush size    : 64
    cache_alignment : 64
    address sizes   : 36 bits physical, 48 bits virtual
    power management:

    processor   : 1
    vendor_id   : GenuineIntel
    cpu family  : 6
    model       : 15
    model name  : Intel(R) Core(TM)2 Duo CPU     T5670  @ 1.80GHz
    stepping    : 13
    cpu MHz     : 800.000
    cache size  : 2048 KB
    physical id : 0
    siblings    : 2
    core id     : 1
    cpu cores   : 2
    apicid      : 1
    initial apicid  : 1
    fdiv_bug    : no
    hlt_bug     : no
    f00f_bug    : no
    coma_bug    : no
    fpu     : yes
    fpu_exception   : yes
    cpuid level : 10
    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 nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts
    bogomips    : 3590.97
    clflush size    : 64
    cache_alignment : 64
    address sizes   : 36 bits physical, 48 bits virtual
    power management:
share|improve this question

migrated from serverfault.com Mar 22 '11 at 10:57

This question came from our site for professional system and network administrators.

marked as duplicate by Mokubai, studiohack Apr 8 '11 at 20:50

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
This might be related - superuser.com/questions/168809/… - thou I'm not sure as it's not very clear what you are asking. –  DMA57361 Mar 22 '11 at 11:00
    
Should this be migrated again to unix.stackexchange.com? –  ripper234 Mar 22 '11 at 14:40

2 Answers 2

In this case processor is just an identifier (which starts at 0). You have two processors, so they're 0 and 1. CPU cores means the number of cores in each physical processor (two here).

share|improve this answer

It is two processor cores on one die essentially like having a dual processor system in one processor.

The central processing unit (CPU) is the portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computer's functions.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.