Best ways to find Linux CPU information. How to get Linux processor info?

1. Get CPU parameters using text information from /proc directory

All information is accessible via normal text file. All you need to obtain processor information is simply read the file /proc/cpuinfo, just like that:

  cat /proc/cpuinfo

and you should get human readable output similar to this:

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Intel(R) Xeon(R) CPU           E5310  @ 1.60GHz
stepping	: 7
cpu MHz		: 1600.057
cache size	: 4096 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
initial apicid	: 5
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu de tsc msr pae cx8 apic cmov pat clflush acpi mmx fxsr sse sse2 ss ht nx constant_tsc pni ssse3 hypervisor
bogomips	: 3207.60
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

[...]

In /proc/cpuinfo you should find all needed information about CPU that you have, including:

• CPU name
• number of CPUs
• cpu type (model, family)
• CPU cache sizes and many, many more...

2. Obtain information on CPU from lshw command

When you need to get information about your hardware lshw command is very useful. I would even say that it is irreplaceable. To get information on CPU enter:

lshw -class cpu

If you don't need detailed output you can run lshw like that:

lshw -class cpu -short

Sample output:

H/W path  Device  Class      Description
========================================
/0/1              processor  Intel(R) Xeon(R) CPU           E5310  @ 1.60GHz
/0/1/5.1          processor  Logical CPU
/0/1/5.2          processor  Logical CPU
/0/1/5.3          processor  Logical CPU
/0/1/5.4          processor  Logical CPU
/0/2              processor  Intel(R) Xeon(R) CPU           E5310  @ 1.60GHz
/0/2/5.1          processor  Logical CPU
/0/2/5.2          processor  Logical CPU
/0/2/5.3          processor  Logical CPU
/0/2/5.4          processor  Logical CPU