When we find that our Mac is getting more and more jammed or slower, we need to start checking and monitoring our Mac usage like a "doctor".
Therefore, a lot of obsessive-compulsive disorder "patients" need to look at their own computer CPU usage, fan speed, hard drive status, network status, etc., in order to live happily.
In fact, this is also to have a better and faster Mac experience to make efforts.
What if the Mac slows down?
1, Monit
Displays the current state of the CPU, memory, disk, battery, and network, and click on the icon to display more detailed information.
2, Fanny
can display fan speed and CPU temperature, not only in the Notification Center (the icon of the menu bar indicated in the red arrow below as the Notification center, click to open the Notification center) shows that it also climbed the menu bar.
Fanny Download, double-click Open, you can go to the Notification Center click on the bottom of the "edit", and then click the corresponding plug-in name after the plus add gadgets.