Linux Fundamentals 01

Before the Linux no system learning, because to learn big data, so now to learn the system, here to share the experience, notes, everyone a piece of communication.

Linux is a time-sharing operation and supports multi-user system, also known as time-sharing operating system.

Seemingly simple words, but the content involved is not so simple.

Time-sharing operating system: to make a computer to use the method of temporal rotation for several, dozens of or even hundreds of users of an operating system.

Time Slice rotation (Round Robin) Dispatch: is one of the oldest, simplest, fairest and most widely used algorithms, also known as RR scheduling . Each process is assigned a time period, called its time slice, which is the time that the process is allowed to run. It is important to note that the time slices are too short to cause frequent switching. ( If a job is not completed before the end of the time slice, the job is paused, the CPU is discarded, and the next cycle is resumed .)

RR (round-robin) Scheduling: Polling scheduling, a strategy for channel scheduling in communications, which enables users to take turns using shared resources without considering instantaneous channel conditions.

Channel: Popularly speaking, refers to the transmission medium-based signal path. Specifically, a signal path provided by a wired or wireless line. The function of the channel is simply to transmit the signal.

On this one system involves so many definitions, for do not understand the bottom of me a bit difficult to digest, estimated teacher lectures will not say so, otherwise just start on so difficult, behind the can not speak, so everyone simple understand under on it, after slowly engage him.

Write here today, the first system of blogging, the level of limited also hope to help you. Not regularly updated every week, we welcome a exchange of learning AH.

This article is from the "Guardian" blog, make sure to keep this source http://kaier.blog.51cto.com/4166837/1916502

Linux Fundamentals 01