stop system idle process

Tags: representations 51cto details brief conf rule ffffff returnSource: 50426692 "PostgreSQL Database kernel analysis," the 2nd Chapter PostgreSQL Architecture, this chapter from the macro on the control and processing of PostgreSQL a brief introduction, explains how each module is working together, so that the entire database system can be stable, Handles the user's various actions and requests correctly. As to how each module functions and how it w

creates a new process. The above four methods are used to create a process. In essence, a process executes a system call for creating a process. For example, in a UNIX system, a combination of fork + exec is used to generat

resources that each process now requires), and the value is equal to the desired minus the resultingAvailable matrix (representing the number of available idle resources Now), with only one group value per stage2. Description of the Banker algorithm:STEP1 (Resource attempt allocation): If a process issued a resource request, if the resource requested is greater

First, the Linux system startup processThe start-up process for Linux systems can be divided into the following steps:Post power-on self-Test-->bios (boot Sequence)--loads the MBR on the corresponding boot (bootloader)--and the master boot setting loads its Bootloader-->kernel initialization-- Initrd->/etc/init process Load/etc/inittab, its

What to learn in this chapter------Process Concepts------process creation, switchover, and revocation------Process Scheduling------Process Classification------Process Status------Process Management ToolsIntroductionIn the Linux

of different types of resources, and the semaphore set refers to the processing of multiple resources of the same kind, as well as the special case of the and type semaphore.(6) Pipe processBecause a process is operating on a resource, it is necessary to bring a pair of PV operations, in order to avoid this situation, the operation of a resource and the process to wrap it up, such a module called the pipe

month. Seconds # clock-W save time changes to BIOS system shutdown, restart, and logout # shutdown-H now shuts down the system (1) # init0Shut down the system (2) # Telinit0Shut down the system (3) # shutdown-H Hours:minutes shut down the system at a predetermined time # sh

) and blocking process tableThe system separately records the starting address of each PCB table.3. PCB multistage Queue Problems caused by multiple processes Multiple processes competing for memory resources Tight Memory resources No ready process, processor idle: I/O speed is much slow

1. Basic System Process Csrss.exe: A subsystem server process that controls the Creation or Deletion of threads in windows and the 16-bit Virtual DOS environment.System idle process: This process runs on each processor as a single

*/ - //OASL operating system initialization, including memory allocation, Message Queuing, timers, power management and tasks such as Osal_init_system (); A at /*Enable interrupts*/ -Hal_enable_interrupts ();//turn on global interrupts - - //Final Board Initialization -Initboard (Ob_ready);//set flag indicating system initialization complete - in #ifDefined (power_saving) - //If you enable lo

process or run the child process. Both of these processes are in a ready state and can be arbitrarily determined. A scheduling decision must be made when a process exits. Selecting a process from the ready process, if there is no ready

Introduction:In the five major components of the Linux kernel, the process Management module is a very important part of it, although it is not as complex as memory management, virtual file systems and other modules, and not as coherent as the interprocess communication module, but as one of the five core modules, process management for us to understand the operation of the kernel, is very important for our

Linux system startup process (3) One of the system fault repairin the use of Linux may cause a variety of reasons for the machine can not start, so there should be a response to these problems should be a measure to restore the system to let this work. Here are a few examples to illustrate each. Case one:destroys Grub'

What is a thread　　What is a thread? What does a thread have to do with a process? This is a very abstract issue, but also a very broad topic, involving a lot of knowledge. I can't make sure that I can talk about it or make sure everything is right. Even so, I would like to speak to him as much as possible, to understand a little, because this is a long time to haunt me, a bewildering field of knowledge, I hope that through my understanding to uncover

Turn from: http://blog.csdn.net/luoweifu/article/details/46595285 What is a threadWhat is a thread? What does a thread have to do with a process? This is a very abstract issue, but also a very broad topic, involving a lot of knowledge. I can't make sure that I can talk about it or make sure everything is right. Even so, I would like to speak to him as much as possible, to understand a little, because this is a long time to haunt me, a bewildering fiel

programs are added as self-booting, you can use the command: cat/etc/rc.local (see which program paths are added to this file) ******************************************** For example, how to add a shell script as a system service and follow the system boot: You can see "/ETC/RC.D/INIT.D" There are a lot of files, each file can see the content, in fact, are some shell script. The start of the

+ 2 37) SIGRTMIN + 338) SIGRTMIN + 4 39) SIGRTMIN + 5 40) SIGRTMIN + 6 41) SIGRTMIN + 7 42) SIGRTMIN + 843) SIGRTMIN + 9 44) SIGRTMIN + 10 45) SIGRTMIN + 11 46) SIGRTMIN + 12 47) SIGRTMIN + 1348) SIGRTMIN + 14 49) SIGRTMIN + 15 50) SIGRTMAX-14 51) SIGRTMAX-13 52) SIGRTMAX-1253 SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9 56) SIGRTMAX-8 57) SIGRTMAX-758 59) SIGRTMAX-6 60) SIGRTMAX-4 61) SIGRTMAX-3 62) SIGRTMAX-263 64) SIGRTMAX jerry @ why:/var/log $ ps auxf (x also displays background processes, i

1. What is a processProcess is a computer program on a data set on a running activity, the system is the basic unit of resource allocation and scheduling, is the basis of the operating system structure. It is not just the code of the program, it also includes the current activity, which is shown by the value of the program counter and the contents of the processing register.• The concept of the

Original: http://blog.csdn.net/luoweifu/article/details/46595285 What is a threadWhat is a thread? What does a thread have to do with a process? This is a very abstract issue, but also a very broad topic, involving a lot of knowledge. I can't make sure that I can talk about it or make sure everything is right. Even so, I would like to speak to him as much as possible, to understand a little, because this is a long time to haunt me, a bewildering field

Original source: LuoweifuWhat is a threadWhat is a thread? What does a thread have to do with a process? This is a very abstract issue, but also a very broad topic, involving a lot of knowledge. I can't make sure that I can talk about it or make sure everything is right. Even so, I would like to speak to him as much as possible, to understand a little, because this is a long time to haunt me, a bewildering field of knowledge, I hope that through my un