3 Replies Latest reply: Sep 2, 2013 7:46 AM by AmitShil RSS

    How to know per cpu core available

    999875

      Hi,

      Can somebody help me tell how to know that server has how many per cpu core available?

       

      Here are the details and from gooogle search I got commands to get this but not sure. I do not have root login.

      bash-3.2$ uname -a

      Linux <HOST> 2.6.32-300.41.1.el5uek #1 SMP Tue Nov 27 12:39:09 PST 2012 x86_64 x86_64 x86_64 GNU/Linux

       

      bash-3.2$ cat /proc/cpuinfo

      processor       : 0

      vendor_id       : GenuineIntel

      cpu family      : 6

      model           : 45

      model name      : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz

      stepping        : 7

      cpu MHz         : 2194.710

      cache size      : 20480 KB

      fpu             : yes

      fpu_exception   : yes

      cpuid level     : 13

      wp              : yes

      flags           : fpu de tsc msr pae cx8 sep cmov pat clflush mmx fxsr sse sse2                   ss ht syscall nx lm constant_tsc rep_good pni pclmulqdq ssse3 cx16 sse4_1 sse4_2                                                                                                  x2apic popcnt aes avx hypervisor lahf_lm

      bogomips        : 4389.42

      clflush size    : 64

      cache_alignment : 64

      address sizes   : 46 bits physical, 48 bits virtual

      power management:

       

       

      processor       : 1

      vendor_id       : GenuineIntel

      cpu family      : 6

      model           : 45

      model name      : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz

      stepping        : 7

      cpu MHz         : 2194.710

      cache size      : 20480 KB

      fpu             : yes

      fpu_exception   : yes

      cpuid level     : 13

      wp              : yes

      flags           : fpu de tsc msr pae cx8 sep cmov pat clflush mmx fxsr sse sse2                                               ss ht syscall nx lm constant_tsc rep_good pni pclmulqdq ssse3 cx16 sse4_1 sse4_2                                                                                                  x2apic popcnt aes avx hypervisor lahf_lm

      bogomips        : 4389.42

      clflush size    : 64

      cache_alignment : 64

      address sizes   : 46 bits physical, 48 bits virtual

      power management:

        • 1. Re: How to know per cpu core available
          rukbat

          999875 wrote:

           

          Hi,

          Can somebody help me tell how to know that server has how many per cpu core available?

          Your post tells us that you have two Xeon E5-2660 processors and that they were manufactured by Intel.

          Perhaps you can learn everything you want by going to Intel's web site and finding all the technical information from them.

           

          An alternative method to get information would be to use a Google search for something such as "intel xeon e5-2680 cores" or you could go to some online retailer that sells such hardware and see how they describe them.

           

          As for "How many are available" ? 

          ALL the cores will be available, to the full extent of whatever the OS or your applications are designed to use CPU cores, unless you have done something to disable processor cores.

          • 2. Re: How to know per cpu core available
            Catch-22

            You can use the nproc command to list the number of processing units (CPU, cores) available to the current process, which may be less than the number of online processors. Using nproc --all will show all installed processors. Root privileges are not required.

            • 3. Re: How to know per cpu core available
              AmitShil

              [root@Gateway ~]# lscpu

              Architecture:          i686

              CPU(s):                1

              Thread(s) per core:    1

              Core(s) per socket:    1

              CPU socket(s):         1

              Vendor ID:             GenuineIntel

              CPU family:            6

              Model:                 37

              Stepping:              5

              CPU MHz:               0.000