Howmany CPU? How many Cores?

lpuname — Mon, 06 Jun 2011 22:36:35 GMT

Can someone identify from the below output howmany cores? and CPU? the server has in RHEL 5.4

processor : 0

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.33
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 1

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 0
cpu cores : 4
apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.43
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 2

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.20
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 3

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 2
cpu cores : 4
apicid : 6
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.33
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 4

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.39
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 5

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 1
cpu cores : 4
apicid : 5
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.14
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 6

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.39
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

processor : 7

cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5460 @ 3.16GHz

cpu MHz : 3166.666
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 3
cpu cores : 4
apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips : 6333.30
clflush size : 64
cache_alignment : 64
address sizes : 38 bits physical, 48 bits virtual
power management:

Re: Howmany CPU? How many Cores?

Wilfred Chau_1 — Mon, 06 Jun 2011 23:19:59 GMT

http://ark.intel.com/Product.aspx?id=33087

you have 2x quad core CPUs.

Re: Howmany CPU? How many Cores?

Wilfred Chau_1 — Mon, 06 Jun 2011 23:22:08 GMT

cat /proc/cpuinfo |grep "cpu cores"
should return cpu cores : 4

dmesg |grep "CPU: Physical Processor ID"
should return 2 CPUs

Re: Howmany CPU? How many Cores?

lpuname — Tue, 07 Jun 2011 08:27:56 GMT

Thanks, got it.

Re: Howmany CPU? How many Cores?

Alzhy — Tue, 07 Jun 2011 15:02:06 GMT

Your cpuinfo output pretty much speaks for itself.

Be mindful too as there are certain processors that have HyperThreading enabled so yuor Quad Core CPU will appear as having 8 "cpus".

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