8g内存为什么就只能用2.79g(8g内存可用2.99g这是为什么)

Take an Android phone as an example. Because the system mechanism of Android determines this phenomenon, the available memory of an Android phone cannot essentially be too much. About 50% of the time, this is because of the limitations brought by the lowest-level Linux system. Linux allocates 50% of the memory to the system by default. Coupled with the installed programs, the running memory will naturally decrease.

Running memory refers to the memory used by mobile phones when running programs, also called RAM (referred to as running memory). The other memory is used to store things, just like the 8G MP4, it has 8G of storage space. This kind of memory is generally called mobile phone memory.

If compared with a computer, the running memory of the mobile phone is the memory of the computer and cannot be used as a medium for storing data. The "memory" of mobile phones usually refers to "running memory" and "non-running memory". The "running memory" of a mobile phone is equivalent to the memory of a computer, that is, RAM. The "non-running memory" of mobile phones is equivalent to the hard drive of a computer. Manufacturers often directly call it mobile phone memory, which is also the so-called ROM. The larger the RAM, the phone can run multiple programs smoothly; the larger the ROM, just like the larger hard drive, it can store more data.