![]() Applications on Apple Silicon are not as fast as expected We've found that colima, ddev, and mutagen generally offer native-like performance beyond the initial code sync. For a deep dive into why Docker is slow on macOS, see Paolo Mainardi's excellent article Docker on MacOS is slow and how to fix it. We recommend all macOS users globally enable mutagen for good performance. Lullabot has standardized on ddev for local environments. Developers may need to find they have to exclude directories from scanning or disable third-party AV entirely. Our projects comprise tens of thousands of small files, the worst case for security scanners. Sophos, Bitdefender, and Windows Defender on Windows cause a computer to be horrifically slow, especially for developers. Security scanners can often cause performance issues At the least, if you determine this is the issue, you know buying a new computer won't fix it. ![]() If the problem is caused by other devices using your home internet connection, check if your router supports Active Queue Management. Also, remember that your internet connection is shared with every other device in your home. Rule out Wifi as a problem by connecting your computer directly to your router with a cable. When buying a new computer, remember that larger disks will be faster than smaller ones. Flash disks (SSD drives, which most computers have nowadays) need free space to operate effectively, and a disk that is 90% or more full will be significantly slower. Try to keep at least 10-20% of your disk free. Like the above, you need to quit programs you aren't currently using. If you see something oddly using a lot of memory, it may indicate a bug in that program. 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.
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