Q. How do I display CPU information in Linux ?
A.You can get information of /proc/cpuinfo file or use lshw command to display CPU information in Linux.
Display CPU information from /proc/cpuinfo file
/proc/cpuinfo is a short, read-only, plain text file that contains information about the CPUs (central processing units) on a computer.
Type the following command to display CPU information:
# cat /proc/cpuinfo
Sample outputs
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 37 model name : Intel(R) Core(TM) i3 CPU M 350 @ 2.27GHz stepping : 5 cpu MHz : 931.000 cache size : 3072 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 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 dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm arat dts tpr_shadow vnmi flexpriority ept vpid bogomips : 4522.67 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: ...
To display number of processors in the system, type the following command:
# cat /proc/cpuinfo | grep processor
Sample output
processor : 0 processor : 1 processor : 2 processor : 3
Using lshw command
Type the following command
# lshw -class processor
Sample output
WARNING: you should run this program as super-user.
*-cpu
product: Intel(R) Core(TM) i3 CPU M 350 @ 2.27GHz
vendor: Intel Corp.
physical id: 1
bus info: cpu@0
size: 931MHz
capacity: 931MHz
width: 64 bits
capabilities: fpu fpu_exception wp 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 pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm arat tpr_shadow vnmi flexpriority ept vpid cpufreq
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