【 reprint 】 Linux under DMA details
Direct Memory access-DMA is a mode of transferring data within a computer without the interference of the central processing unit (CPU). The way DMA works...
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Tag: The operating system
Operating system learning posture correctly – a treasure trove you can’t miss
December 28, 2023
by 張怡安
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Generally few people recommend operating system websites... These sites are from my usual learning summary, and some are from excellent answers on the Internet. I...
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This article is enough to understand Netty thoroughly
December 28, 2023
by Alisha Chaudhari
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With Netty, you can implement your own HTTP server, FTP server, UDP server, RPC server, WebSocket server, Redis Proxy server, MySQL Proxy server, etc. HTTP...
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OpenEuler Note: Process 1: Program loading and running, process description (PCB, process status)
December 28, 2023
by Sarah Green
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Unix-like binaries are usually in ELF format, where a logical whole program is stored in several segments based on content type. Main Segment:.text, store machine...
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The Linux kernel
December 28, 2023
by Ralph Ball
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The application layer usually focuses on using an API as a black box, but understanding the mechanics of the operating system will help us use...
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The Linux kernel
December 28, 2023
by 金淑芬
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The kernel uses physical pages as the basic unit of memory, and the MEMORY management unit (MMU) is formally processed in pages. The MMU hardware...
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OpenEuler Note: Process 2: Process control _ Create a new process and load the program
December 28, 2023
by Rebecca O'Brien
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Most of the referenced code was dug up in openEuler by bloggers following the instructions in the book. In order to minimize the length of...
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Operating system written in Rust | tsinghua rCore OS tutorial
December 28, 2023
by Amber Hampton
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As we all know, the operating system course of Tsinghua University is a national excellent course. Tsinghua University is also the first university in China...
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Parallel Programming and multi-threading
December 28, 2023
by Ritvik Lad
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Multithreading is a broad programming and execution model that allows multiple threads to exist within the context of a process. Each of these threads can...
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50,000 words, 97 graphics summary of the core knowledge points of the operating system
December 27, 2023
by Elakshi Tak
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Larger picture at the end of the article. This is not an article that teaches you how to create an operating system. Rather, it is...
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Operating system “Zero copy”
December 27, 2023
by 郭宗翰
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User space and kernel space The operating system allocates a block of virtual memory for each process, which is called the virtual address space, which...
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H5 interacts with APP!
December 27, 2023
by Thomas Goodman
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At present, native apps are mainly divided into IOS and Android. There's nothing to be said for IOS, an operating system created exclusively by Apple...
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Talk about processes and threads
December 27, 2023
by 李懿
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A process is the smallest unit of resource allocation and a thread is the smallest unit of CPU scheduling. Can a CPU distinguish between threads?...
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Concurrent programming switching over and below
December 27, 2023
by Martyn Stevenson
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The CPU uses the time slice allocation algorithm to execute tasks in a cycle. After the current task executes a time slice, it switches to...
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Operating system -3.3 Interprocess communication – signals
December 26, 2023
by Sean Smith
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The user enters a command to start a foreground process under the Shell. The user presses CtrL-C, and this keyboard input generates a hardware interrupt....
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Operating systems Classification and history of operating systems
December 26, 2023
by Devansh Subramaniam
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The development and classification of OS manual operation stage paper tape punching machine shortcomings of the user exclusive whole machine, man-machine speed contradictions lead to...
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Operating system process management (1), no matter how high concurrency research, it is better to chew the operating system process!!
December 26, 2023
by Anvi Garg
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Process management, scheduling, switching, control, threading model. Through the thread model, see Java, Golang distinction essence, operating system YYDS.
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IOS Multithreaded programming three: Operation and OperationQueue
December 26, 2023
by Thomas Schmidt
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This is the third article on multithreading, focusing on Operation and OperationQueue. When looking at the information found a particularly good tutorial, with the translation,...
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BIO, NIO, AIO Overview
December 26, 2023
by Matthew Hill
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In Java, there are three IO models: BIO, NIO, and AIO. In order to introduce these three IO models, it is necessary to introduce the...
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Write an operating system from scratch – 1.6 IA-32E mode
December 26, 2023
by 金雅芳
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There are two modes of CPU operation, real mode and protected mode, and the IA-32E mode is the third mode of CPU operation, which is...
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Linux – CPU load averaging introduction and case assumptions
December 26, 2023
by Sara Leach
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"This article has participated in the call for good writing activities, click to view: the back end, the big front end double track submission, 20,000...
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Operating system memory management
December 26, 2023
by Melissa Jenkins
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Operating system memory management, including free memory management, non-free memory management, have provided the corresponding algorithm, virtual memory is a very important concept.
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After looking at the process synchronization and mutex mechanism, I finally understood the PV operation completely
December 26, 2023
by Kenneth Smith
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1. What is Process synchronization In a multi-channel batch system, multiple processes can be executed concurrently. However, due to the limited resources of the system,...
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Read the microkernel
December 26, 2023
by 趙雅筑
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Microkernels are not a new concept. As early as 1969, when the UNIX system was being designed, operating systems similar to the microkernel architecture were...
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Systrace for Linux- Use Systrace to analyze Linux & Android scheduling problems
December 26, 2023
by Joshua Robinson
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Use Systrace to capture sched, IRQ and frame information, frame information is certainly not available in our server and embedded field, but sched, IRQ and...
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The little master of the whole life! Windows system slide shutdown! One line script for cool effect
December 26, 2023
by Kathy Manning
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"This article has participated in the call for good writing activities, click to view: the back end, the big front end double track submission, 20,000...
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Modern operating systems – Interprocess communication problems
December 25, 2023
by Jeanette Holden
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Anything that can go wrong will go wrong. From the previous article, we learned that a process is an operating system abstraction of a running...
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Operating system – deadlock
December 25, 2023
by Roy Hughes
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This series refers to the information on Github, excerpts, through the understanding of the operating system, about the computer operating system is described.
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OS- Memory management
December 25, 2023
by Darshit Sem
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Answer: Each program has its own address space, which is divided into fixed large pages of contiguous address ranges that are mapped to physical memory....
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The unspoken Java “lock” thing
December 25, 2023
by Katie Lambert
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Java provides a rich variety of locks, each of which can be very efficient in the right scenarios because of its unique characteristics. This article...
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