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메모리

macOS has very efficient memory management. It will automatically allocate memory and adjust the contents of memory as needed. This information can be viewed in the Memory pane of the Info toolbar item.


Info on the memory

물리적 메모리: 설치된 RAM의 크기입니다.

사용된 메모리: 사용 중인 RAM의 크기와 즉시 사용 가능한 크기입니다.

와이어드 메모리: 디스크로 캐시될 수 없어서 RAM에 있어야 하는 메모리입니다. 다른 앱에서 이 메모리를 빌릴 수 없습니다.

캐시된 파일: 성능을 향상하기 위해 사용하지 않은 메모리로 캐시한 파일의 크기입니다.

사용된 스왑 공간: 사용하지 않는 파일을 RAM에서 또는 RAM으로 스왑하기 위해 시동 디스크에서 사용하고 있는 공간입니다.

Page ins/Page outs: This refers to the cumulative amount of data moved between RAM and the Mac's hard disk.

Tip: Page outs occur when the Mac has to write information from RAM to the hard disk (because RAM is full). Adding more RAM may reduce page outs.

Active: This information is in RAM and has been recently used.

Inactive: This information is in RAM, but it is not actively being used; it was recently used.

For example, if you've been using Mail and then quit it, the RAM that Mail was using is marked as inactive memory. Inactive memory is available for use by another application, just like available memory. However, if you open Mail before its inactive memory is used by a different application, Mail will open quicker because its inactive memory is converted to active memory instead of loading it from the slower hard disk.

You can use the Purge button to remove the information in the inactive memory.

While purging the inactive memory, the Finder may slow down and not respond for several seconds.