how ivrs system works

font, hard disk LVM or RAID function to perform disk detection with FSCK.· Logs the boot status to/VAR/LOG/DMESG. (You can view the results with the command DMESG.)· 7:ok, Next, is to start the system service, different run-level will have different service startup. To/ETC/RC. In the D directory, different level will have different directories. If you start 3 mode, there will be a RC3. D directory, where the service is stored. Where the start of S (s

How does the operating system work?20135108 li Zeyuan "linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000Mykernel Experimental Guidance (how the operating system works)Run and analyze a streamlined operating system kernel to understand how the operating

Huangyin Kai Original works reproduced please indicate the source "Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000According to the experimental requirements, the operation in the experimental building. (I do not know whether it is my problem or the lab building problem, run the code for a long time not to produce results, so part of the teaching video)(Time slice rotation, you can see the code of my start kernel)(En

How the operating system works ———— a streamlined operating system kernel20135304 Liu XipengOriginal works reproduced please indicate the source"Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000Experimental processOpen the shell with the lab virtual machine, load the Linux kernel neede

How does a computer work? (summary)--Three magic weapon Stored program computer working model, the most basic logical structure of computer system; The function call stack, the high-level language to run the foundation, only the machine language and the assembly language when the stack mechanism for the computer is not so important, but with the high-level language and functions, the stack becomes the basic function of the computer; Enter

Reprint please indicate from 36 Big Data (36dsj.com): 36 Big Data»hadoop Distributed File System HDFs works in detailTransfer Note: After reading this article, I feel that the content is more understandable, so share it to support a bit.Hadoop Distributed File System (HDFS) is a distributed file system designed to run

many processes or fork several processes, and when interrupts occur, such as when a clock interrupt occurs in Mykernel, the OS then schedules the processes. Select a suitable process in the dispatch queue, which holds the registers information of the previous process by the CPU and the kernel stack (the thread structure in the process description block holds most of the CPU registers, but these general-purpose registers such as EAX, EBX, etc. are saved and stacked). The EIP points to the addres

scheduled time, it will assume that the datanode is faulty, remove it from the cluster, and start a process to recover the data. Datanode may be out of the cluster for a variety of reasons, such as hardware failure, motherboard failure, power aging, and network failure.For HDFs, losing a datanode means losing a copy of the block of data stored on its hard disk. If there is always more than one copy at any time (default 3), the failure will not result in data loss. when a hard drive fails, HDFs

datanode is faulty, remove it from the cluster, and start a process to recover the data. Datanode may be out of the cluster for a variety of reasons, such as hardware failure, motherboard failure, power aging, and network failure.For HDFs, losing a datanode means losing a copy of the block of data stored on its hard disk. If there is always more than one copy at any time (default 3), the failure will not result in data loss. When a hard drive fails, HDFs detects that the number of copies stored

return function, returned to the original caller is the process of the number No. 0.Second, the experimental processUse the built environment to open the file in the lab buildingRunning the programMYMAIN.C Program codeMYINTERRUPT.C Program codeExperimental summary: The experiment process in the source code of many lines of code can not understand, through the Baidu, watch the video has a certain understanding, but also a general understanding of how the operating

How the Linux kernel analyzes how the operating system works20122137 Sha Yu JiOriginal works reproduced please indicate the sourceLinux kernel Analysis MOOC course http://mooc.study.163.com/course/USTC-10000290001. Content DescriptionThe inline assembly syntax is as follows:The specific code is as follows:(1) Mypcb.h header file/** Linux/mykernel/mypcb.h* Kernel Internal PCB types* Copyright (C) mengning*/#

"Peace of Blessing + Original works reproduced please specify the source +" Linux kernel analysis "MOOC course http://mooc.study.163.com/course/USTC-1000029000 "first, the process of initializationThe operating system kernel boot entry function is void __init my_start_kernel (void);Here is a simple definition of the two CPU states of a process:struct Thread {unsigned long IP; Indicates an EIP directiveunsi

Fan Original works reproduced please specify the source "Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000According to the experimental requirements, the operation in the experimental building.Time Slice Rotation method(Enter VI main.c to view Mykernel source code)The most core code in MYMAIN.C(myinterrupt.c code, each time the clock interrupts the call once PRINTK)2. Operating sy