![]() ![]() In order to be compatible with nonstandard programs, the win system allows the program to remain in use for a long time or for a long time. The preceding figure shows that OS X does not need to worry about memory management. However, if the free memory and inactive memory of the system are both small and the active memory is large, your memory is insufficient. As long as the system or program needs it, the system will convert and use it. Therefore, it is normal to have a small amount of free memory and a large amount of inactive memory in the system. (This is why the system speed is affected when the available disk space is less than 10 Gb ). The released part will be allocated to the virtual memory of the disk. Similarly, when necessary, this part of inactive memory resources will be released as free for the program. If the active memory resource is not used for a period of time, it will be changed to inactive status temporarily. Use certain principles to release inactive resources to free. When free memory is lower than a certain value (determined by the actual memory size), the system uses inactive resources in a certain order. Inactive indicates that the data in the memory is valid but has not been used recently.įree indicates that the data in the memory is invalid and the space can be used by the program at any time. Wired is the core of the system and will never be evicted from the physical memory of the system.Īctive indicates that the memory data is in use or has just been used. ![]() In short, OS X memory usage is divided into wired, active, inactive, and free. Sometimes some unnecessary memory space will be characterized " Inactive ( Inactive ) " Status. The system has good memory management however " No one is perfect. ![]() Do IOS Development, a little memory left when you are not careful, 4 GB Memory is not enough. ![]()
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