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Understand the basic performance of the Linux kernel? This problem may be often seen in our daily study or work. I hope you can gain a lot from this question. The following is the reference content that the editor brings to you, let's take a look at it!

I believe many people are no stranger to the Linux system, but some people may be familiar with the Linux kernel. Let's take you to know what the Linux kernel is.

One: what is Linux

Linux is a UNIX-like operating system developed by Linus Torvalds. The main feature of Linux is open source, so we can use it as a server for free.

Linux is strictly divided into two meanings.

1. The extensive Linux refers to the Linux distribution.

two。 In a narrow sense, Linux refers to the Linux kernel

Linux kernel is the foundation of the operating system, between hardware and software, and the kernel is located in the operating system. The operating system will mediate between hardware and software. Linux kernel is the function of the core part of the operating system.

Second: the basic performance of the kernel

1. Process management

In the Linux kernel, the execution state of programs is managed on a process-by-process basis. In addition, the kernel prepares a data structure called the task_stract structure for each process.

two。 Process scheduler

The executable state waits for which process to execute in which order, and since it is almost impossible to run more processes than CPU, the efficiency of the running process is very important.

3. Memory management

In the Linux kernel, physical memory and virtual memory are used to manage data. By assigning a virtual address corresponding to the physical memory instead of actually assigning the physical memory address to each process, memory with a capacity much larger than the actual physical memory capacity can be used. It makes it possible. In addition, because each process is assigned its own virtual address, the memory space of each process is independent and does not violate the memory of other processes.

3. File system

It provides access to stored data in the form of files. All data is managed as a file. / Directory (root directory) is the vertex, and the kernel itself exists as a collection of files and directories.

Thank you for reading! After reading the above, do you have a general understanding of the basic performance of the Linux kernel? I hope the content of the article will be helpful to all of you. If you want to know more about the relevant articles, you are welcome to follow the industry information channel.

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