【macOS] Using Glances to obtain the cpu utilization of a specified process in macOS is inaccurate

[RLYRLY]

Environment
OS:macOS 13.6.5 (22G621)
Architecture: ARM64
Psutil version: 5.9.8
Python version: 5.7.7
Type: core, CPU

Description
By using glances to get the cpu utilization of a process, and then using the cpu utilization obtained by the top command or the htop command to verify the results of glances, it is found that the results calculated by glances are completely inconsistent.

Detail

htop command: 2.4%

glances：0.1%

[nicolargo]

Hi @RLYRLY

Glances has a different sampling period than Htop. Htop refresh stats every second. Glances every 2 seconds. As the CPU consumption is very variant, you may have some difference.

Under the wood, Glances uses PsUtil to get the processes information. You may find additional information concerning the algorithm used to compute the CPU consumption here: https://psutil.readthedocs.io/en/latest/#psutil.cpu_times