This post will explain how to check why the system is running slowly.
For improved user experience, it is unbearable to run the system too slowly, as that wastes time and affects the users' mood, causing the user experience to be poor.
We can thus do some checks in order to avoid the system to run very slowly. Here's an example in the case of SMC:
1. View the average CPU usage by running the top command (to exit, press Ctrl+C). The average CPU usage is about 15% normally.
2. View the average memory usage by running the top command (to exit, press Ctrl+C). The average used memory space should not exceed 8 GB.
3. View the disk usage by running the df -h command. Ensure that at least 50% of the /dev/sda2 disk space is available.
When the system is running slowly, you need to kill useless processes, delete useless history, log files, etc.
