Should I tune my Mac for virtual memory and swap? When it needs something from the swap file, it retrieves it and reloads it into RAM. A Mac uses a swap file to temporarily store applications and program components that it does not need at the moment. Like Windows PCs, Macintosh computers use virtual memory to run more programs than the system memory normally could accommodate. Which is a pretty high priority since most processes default to 0. The below example takes the 16432 process and assigns a priority level of -10. Depending on user permission you may need to use the SUDO (superuser) prefix. To assign a priority level to an already running process use the “renice” command. Virtual memory is a technique computers use to temporarily move data from random-access memory (RAM) to the hard disk if the amount of available RAM is limited. To keep your information safe, macOS uses secure virtual memory. ![]() Restarting your computer is the simplest way to free up RAM. How do I free up virtual memory on my Mac? What is virtual memory and why is it so important?.Should I tune my Mac for virtual memory and swap?.How do I give my Mac a high priority process?. ![]()
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