1. Virtual Address, virtual memory ing, system call nature, and process running status

Zookeeper

1. The operating system assigns a virtual address ranging from 0 to 4G to each process.

2. Relationship between virtual memory and physical memory

Summary:

The minimum unit for memory management in program a is page (4096 bytes). If the required memory is less than 4096 bytes, it is actually 4096 bytes.

B. Each program corresponds to an independent virtual memory. When calling this function, you first need to find your own virtual memory. Then, you actually need to find the physical memory through the virtual memory.

C. Each process shares the kernel of the operating system.

3. About system calls

4. process running status

1. Virtual Address, virtual memory ing, system call nature, and process running status