How to Check CPU (Cores) on VPS/Dedicate Server?

After I upgrade my VPS, I found out that the CPU main frequency is slower than before. I sent a email to QuickhostUK and they replied.

quickhostuk

On the old HDD system the CPU was:
model name : Intel(R) Xeon(R) CPU E5440 @ 2.83GHz
On the new SSD system the CPU is:
model name : Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
The Intel Xeon E5620 @ 2.40GHz is newer and is actually quicker than even a Intel Xeon E5450 @ 3.00GHz

So I login to VPS and check the CPU information by the following command: cat /proc/cpuinfo

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 44
model name      : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
stepping        : 2
microcode       : 0x1
cpu MHz         : 2393.998
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     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb lm constant_tsc arch_perfmon nopl pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm
bogomips        : 4787.99
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 44
model name      : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
stepping        : 2
microcode       : 0x1
cpu MHz         : 2393.998
cache size      : 4096 KB
physical id     : 1
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb lm constant_tsc arch_perfmon nopl pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm
bogomips        : 4787.99
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

processor       : 2
vendor_id       : GenuineIntel
cpu family      : 6
model           : 44
model name      : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
stepping        : 2
microcode       : 0x1
cpu MHz         : 2393.998
cache size      : 4096 KB
physical id     : 2
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 2
initial apicid  : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb lm constant_tsc arch_perfmon nopl pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm
bogomips        : 4787.99
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 44
model name      : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
stepping        : 2
microcode       : 0x1
cpu MHz         : 2393.998
cache size      : 4096 KB
physical id     : 3
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 3
initial apicid  : 3
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb lm constant_tsc arch_perfmon nopl pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm
bogomips        : 4787.99
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

That is a good 4 cores.

Use the following commands if you don’t want to scroll the screen for so much overwhelming information.

cat /proc/cpuinfo |grep 'physical id' | sort | uniq
physical id     : 0
physical id     : 1
physical id     : 2
physical id     : 3

cat /proc/cpuinfo |grep 'model name' | sort | uniq
model name      : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz

cat /proc/cpuinfo |grep 'cpu cores' | sort | uniq
cpu cores       : 1

cat /proc/cpuinfo |grep 'processor'
processor       : 0
processor       : 1
processor       : 2
processor       : 3

All commands show there are four cores.

–EOF (The Ultimate Computing & Technology Blog) —