Linux

1,First,Use TOP command to view View 12.6% wa Percentage of CPU time occupied by I/O wait, which is higher than 30% 2,Second,Use iostat-x 1 10 If iostat does not exist, yum install sysstat is required. View % util 100.10% idle 66.29 If %

  Target of process scheduling: 1. Efficiency: efficiency means completing more tasks at the same time. SchedulingProgramWill be executed frequently, so the scheduling program should be as efficient as possible. 2. Enhance the interaction

LDD understands: Linux is a virtual memory system, which means thatProgramThe address you see does not directly correspond to the physical address used by the hardware. the Virtual Memory introduces an indirect layer that allows many good things.

I posted a blog post without further research. You can also refer to section 4.6 of lkd Early linux kernels cannot be preemptible. Its scheduling method is: a process can voluntarily start a scheduling by using the schedule () function. Voluntary

1. Classic Chinese data recommendations: Laruence'sLinuxPrivate foodBasic Learning (version 2) PDF download Laruence's Linux private dishServerSetup (second edition) hd pdf download Linux Command speed query manual (Chinese) PDF version

The Linux Desktop era has arrived. There are now many excellent Linux desktop systems, such as Ubuntu and the mint version recently discovered. I am not really a Linux fan, but I just pay attention to it. The new version I saw this year is quite

1. If you think there are too many Apache logs, you can do this without stopping the Log service.Echo>/usr/local/Apache/logs/error_log   2. View Process Information PS-Aux | grep vi   3. View CPU InformationCD/proc Cat meminfo   4. Check

If you only want to query the bandwidth of the current server, nload is definitely a very useful tool. Although it has a single function, it is very powerful. although it cannot be queried Based on IP address, protocol, or other conditions like

Eric has comprehensive functions for developers of the python Dynamic Language. Debugging is supported, and variables are not fully functional automatically. If you have downloaded Eric, you need to configure it according to the system environment.

1. Import Data MSSQL-MySQL 2. mysql-TextSelect keywords, publishtime from paper into OUTFILE "C:/a.txt" Character Set GBK; ++ 3. How to display Chinese Characters in Red Hat 9.0 Linux English version 3.1 install the Chinese character package

. TarUnpack: Tar xvf filename.tarPackage: Tar CVF filename.tar dirname(Note: tar is packed, not compressed !)---------------------------------------------. GZDecompress 1: gunzip filename.gzDecompress 2: gzip-D filename.gzCompression: gzip

Linux I/O model (6)-signal-driven I/O modelBy Xuan Mai blade, 1008 read, 0 comments, favorites, Edit Many signals are defined on UNIX. The implementation from Berkeley uses sigio signals to support signal-driven Io on sockets and terminal

Linux non-blocking socket-Google Search LinuxC implementation timeout, Non-blocking SocketSelect-yunlu Liu (Liu yunlu) Sites.google.com/site/yunluliussite/Linux-Shell/selectYou have already published this item + 1. Undo However, the SELECT

Steps for compiling the daemon program in Linux-columns of silent_wind-blog channel-csdn. net Steps for compiling a daemon program in Linux Category: Unix Reading by 66 people Comment (0) Favorites Report

Summary on using hash_map and STL in Linux Summary on using hash_map and STL in LinuxAuthor: zhdrfirst time: 2010-10-21 Source: http://blog.chinaunix.net/u3/119070/showart_2363418.html Hash_map is not part of the C ++ standard library, but

[Linux elementary] how to generate and link dynamic libraries in Linux-the log of godbach conjecture-Netease blog [Linux elementary] how to generate and link dynamic libraries in Linux   15:27:23| Category:Programming| Tag:  |Font

The learning materials are from apue, a famous book, and some are from Wikipedia. I will share what I learned step by step! The overall content provided first 1) Basic Concepts Thread, also known as a lightweight thread,YesProgramThe

Partition magic can be said to be a partition tool in windows. If you want to share a hard disk, you can do everything you need. What about Linux? Fdisk cannot properly resize the partition size. It is very troublesome to change the partition size

In the last collection, we deployed our first ASP. NET application in Mono. In addition, we also integrated the PostgreSQL database to implement a small site for simple CRUD operations. Their successful deployment and normal operation reflect the

AKA Homepage AKA homepage \ Linux lecture \Recommended articles for Linux kernel Research To promote the promotion of advanced Linux research in China, AKA specially compiled a list of excellent books on Linux kernel research. The list of these