You either need to quit programs or upgrade your computer. But, you may find that closing a browser tab with lots of visuals (like ads) reduces other processes significantly. Many macOS system programs like WindowServer (used to draw the screen) and kernel_task (used to talk to hardware) can't be quit. If you see high CPU use from a program you don't recognize, ask about it. If possible, quit the programs using the CPU you don't actively need. When you open Activity Monitor for the first time, you will see a window like this:įixing problems My CPU is constantly at 100% The easiest way to open it is to open Spotlight ( command-space) and search for it. This mostly matters for designers and those who use graphics applications like Figma, which are 3D-accelerated.Īctivity Monitor is useful for seeing what your computer is doing. For example, when updating ddev to a new version, the slowest part is almost always downloading it from the internet. If something is slow, but the three items above are all good, this is often the issue. Network: The combination of Wifi and internet. And it's persistent across restarts. For example, when restarting, macOS has to load everything from the disk because memory is cleared on a restart.
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