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CLI tool to print CPU and GPU temperature of macOS

License: GNU General Public License v2.0

Makefile 3.89% C++ 96.11%

macos m1-mac osx cpu-temperature sensors temperature temperature-monitoring temperature-sensor m2-mac m3-mac cli

smctemp's Introduction

smctemp

Print CPU and GPU temperatures on macOS.

It works on following macs.

arm64 (M3 mac)
arm64 (M2 mac)
arm64 (M1 mac)
x86_64

Acknowledgements

I took the code from hholtmann/smcFanControl/smc-command and modified it to specialize in temperature acquisition. Some of the sensor values were obtained from the exelban/stats project.

How to Use

$ git clone https://github.com/narugit/smctemp
$ cd smctemp
$ sudo make install
$ smctemp -c

Usage

$ smctemp -h
Check Temperature by using Apple System Management Control (Smc) tool 0.5.0
Usage:
./smctemp [options]
    -c         : list CPU temperatures (Celsius)
    -g         : list GPU temperatures (Celsius)
    -h         : help
    -i         : set interval in milliseconds (e.g. -i25, valid range is 20-1000, default: 1000)
    -l         : list all keys and values
    -f         : fail-soft mode. Shows last valid value if current sensor read fails.
    -v         : version
    -n         : tries to query the temperature sensors for n times (e.g. -n3) until a valid value is returned

$ smctemp -c
64.2

$ smctemp -g
36.2

Note for M2 Mac Users

On M2 Macs, sensor values may be unstable as described in the following issue:

For M2 Macs, using the -n, -i, and -f options can help obtain more stable sensor values. Try tuning these options to get better results.

The recommended settings are -i25 -n180 -f (See also https://github.com/narugit/smctemp/pull/34/files#r1721025001)

smctemp's People

Contributors

Stargazers

Watchers

Forkers

a-vakhitov mikemimik jvhaarst tmp-hoge misc-study enen92 adongden tmrdev kyleyannelli matricard

smctemp's Issues

Integration in my script

Hi, I noticed your project; you made a really great work.
I'd like to integrate your code in my script that you can find here.
My script uses a bunch of sensors to get computer data and sends them to remote smart home hubs, so you can use it to monitor your devices.

I'm writing you since my project uses a GPLv3 license, while yours uses a GPLv2, which prevents me from using your code.
Do you allow me to use it in my project, changing your license to GPLv3 or simply to a "GPLv2 or any later version" ?

Thank you for your time.
Hope to hear from you soon,
RB

Support GPU on M3

Apple M2 Max Support (Macbook Pro 2023 14")

Hi!

Thanks again for this great tool.

The new "Apple M2 Max", which Macbook Pros can come with, seems to report the temperature wrong, where it's /10?.

smctemp -c

3.4

uname -m

arm64

sysctl -in sysctl.proc_translated

0

smctemp -l | grep -i "t[cp]0"

  Tp00  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp01  [flt ]  6.7 (bytes: 66 66 D6 40)
  Tp02  [flt ]  8.4 (bytes: CD CC 06 41)
  Tp04  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp05  [flt ]  4.6 (bytes: 89 41 94 40)
  Tp06  [flt ]  5.3 (bytes: 66 66 AA 40)
  Tp08  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp09  [flt ]  6.7 (bytes: 66 66 D6 40)
  Tp0A  [flt ]  8.4 (bytes: CD CC 06 41)
  Tp0C  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp0D  [flt ]  4.6 (bytes: 89 41 94 40)
  Tp0E  [flt ]  5.3 (bytes: 66 66 AA 40)
  Tp0W  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp0X  [flt ]  6.7 (bytes: 66 66 D6 40)
  Tp0Y  [flt ]  8.4 (bytes: CD CC 06 41)
  Tp0a  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp0b  [flt ]  4.6 (bytes: 89 41 94 40)
  Tp0c  [flt ]  5.3 (bytes: 66 66 AA 40)
  Tp0e  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp0f  [flt ]  6.7 (bytes: 66 66 D6 40)
  Tp0g  [flt ]  8.4 (bytes: CD CC 06 41)
  Tp0i  [flt ]  0.0 (bytes: 00 00 00 00)
  Tp0j  [flt ]  4.6 (bytes: 89 41 94 40)
  Tp0k  [flt ]  5.3 (bytes: 66 66 AA 40)
  ftP0  [flt ]  6.7 (bytes: 66 66 D6 40)
  ftp0  [flt ]  30.8 (bytes: B0 12 F6 41)

smctemp -c && smctemp -l > smc_out:

https://gist.github.com/joshuataylor/bb02ed6bad2d9f3bd0fe2e8d478bbd2d

Current workaround: echo $(($(smctemp -c)*10)) 😁

Does not return any value on M1 in macOS Ventura

I followed the install instructions and it loaded just fine but the value is always 0.0% no matter what.

On Intel chip, which sensor to use

CPU die temperature

CPU proximity temperature

Get temperature on M1 Chip

Does not work via SSH?

Hello, I'm not sure if this is a profile or variable issue, but if I try to run smctemp remotely via an ssh session, I get a command not found error:

ssh me@mymac 'smctemp -c'
(me@mymac) Password:
zsh:1: command not found: smctemp

Is there something I need to add to ~/.zshrc to make this work? It works just fine in Terminal directly on the system.

M2 CPU temperature

I came across your repo because on M2 I can't run sudo powermetrics --samplers smc | grep -i "CPU die temperature" to get CPU temperature. I'm not too familiar with C++ but I have a strong programming background. Can you guide me on the process for getting this from the hardware?

I'm looking at the code but I'm having some trouble understanding exactly what's happening. I think this is where it's getting the temp in the code: https://github.com/narugit/smctemp/blob/9b9f73bd7c503f048dfac2bedc917ccefc942d47/smctemp.cc#LL368C25-L368C25

╭─kyannelli::mbp @ ~/smctemp
╰─ » smctemp -c
0.0
╭─kyannelli::mbp @ ~/smctemp
╰─ » smctemp -g
40.3

Model Name:	MacBook Pro
  Model Identifier:	Mac14,5
  Model Number:	Z17J000AKLL/A
  Chip:	Apple M2 Max
  Total Number of Cores:	12 (8 performance and 4 efficiency)
  Memory:	32 GB
  System Firmware Version:	10151.121.1
  OS Loader Version:	10151.121.1

It seems the prior support added for the M2 Max 8 core PR #14 does not work for the 12 core M2 Max.