Raspberry Pi: Get information about the processor

In this article we show you various command line commands to retrieve information abot the processor on your Raspberry Pi

This was tested on A Raspberry Pi 4.

General processor information

The following command displays information about the CPU being used.

cat /proc/cpuinfo

The output from this on my Raspberry Pi 4

Source code

processor	: 0
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 126.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
 
processor	: 1
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 126.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
 
processor	: 2
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 126.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
 
processor	: 3
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 126.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
 
Hardware	: BCM2711
Revision	: b03111
Serial		: 1000000060d7fa4b
Model		: Raspberry Pi 4 Model B Rev 1.1

The following will display the number of processor cores

cat /proc/cpuinfo | grep processor | wc -l

This is what I saw

Source code

You can also use lscpu to get some information about the processor

lscpu

This is what I saw

Source code

Architecture:        armv7l
Byte Order:          Little Endian
CPU(s):              4
On-line CPU(s) list: 0-3
Thread(s) per core:  1
Core(s) per socket:  4
Socket(s):           1
Vendor ID:           ARM
Model:               3
Model name:          Cortex-A72
Stepping:            r0p3
CPU max MHz:         1500.0000
CPU min MHz:         600.0000
BogoMIPS:            108.00
Flags:               half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32

Temperature of the processor

Current temperature of the SoC in Celsius. You can get this a couple of ways

vcgencmd measure_temp

This is what I saw when i ran this

Source code

temp=36.0'C

You can also use the following

cat /sys/class/thermal/thermal_zone0/temp

This is what I saw when i ran this

Source code

Voltage and clock frequency

You can use the following to get the voltage

vcgencmd measure_volts

This is what I saw when i ran this

Source code

volt=0.8350V

You can use the following to get the clock frequency

vcgencmd measure_clock arm

This is what I saw when i ran this

Source code

frequency(48)=600117184

Processor usage

The command “top” gives information about the load of the processor

top

This is what I saw when i ran this –

Source code

top - 12:02:36 up  1:27,  1 user,  load average: 0.19, 0.24, 0.19
Tasks: 152 total,   1 running, 151 sleeping,   0 stopped,   0 zombie
%Cpu(s):  2.7 us,  0.8 sy,  0.0 ni, 96.4 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :   1867.2 total,   1422.5 free,    170.2 used,    274.5 buff/cache
MiB Swap:    100.0 total,    100.0 free,      0.0 used.   1584.1 avail Mem

This is a screenshot of the command running