Home Reference Raspberry Pi: Get information about the processor

Raspberry Pi: Get information about the processor

by shedboy71

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

[codesyntax lang=”bash”]

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

[/codesyntax]

The following will display the number of processor cores

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

This is what I saw

[codesyntax lang=”bash”]

4

[/codesyntax]

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

lscpu

This is what I saw

[codesyntax lang=”bash”]

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

[/codesyntax]

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

[codesyntax lang=”bash”]

temp=36.0'C

[/codesyntax]

You can also use the following

cat /sys/class/thermal/thermal_zone0/temp

This is what I saw when i ran this

[codesyntax lang=”bash”]

36511

[/codesyntax]

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

[codesyntax lang=”bash”]

volt=0.8350V

[/codesyntax]

You can use the following to get the clock frequency

vcgencmd measure_clock arm

This is what I saw when i ran this

[codesyntax lang=”bash”]

frequency(48)=600117184

[/codesyntax]

Processor usage

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

top

This is what I saw when i ran this –

[codesyntax lang=”bash”]

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 

[/codesyntax]

This is a screenshot of the command running

pi top command output

pi top command output

 

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