how to check disk utilization in linux

1. Monitor CPU utilization (via Vmstat tool)#!/bin/bash#====================================================# Author:lizhenliang-email:[email Protected]# Create DATE:2015-02-01# DESCRIPTION:CPU Utilization Monitor# blog:lizhenliang.blog.51cto.com#===

Disk Arrays, short for RAID (redundantparrayspofpinexpensivepdisks), refer to "cheap and redundant disk arrays. The principle is to use arrays as disk groups and use them in combination with the Design of Distributed Data arrangement to improve data

In the analysis of the system, one of the first and most basic tools is often a simple measurement of the CPU utilization of the system. Linux and most unix-based operating systems provide a command to display the system's average load (loadaverage).

A few days ago encountered Jbd2 process to occupy a large amount of disk Io, with iotop to see the situation is generally as follows:System version: Centos6.5-64bit650) this.width=650; "src="

　　First, Drive introductionMechanical HDD (HDD): Hard disk drive, which is the traditional ordinary hard disk, mainly by: platters, head, disc hinge and control motor, head controller, data converter, interface, caching and other components. All the

1.RAID Description RAID is an abbreviation for the English Redundant Array of Inexpensive disks, abbreviated as a redundant array of inexpensive disks. Simply put, RAID is a combination of multiple separate hard disks (physical hard disks) in

The full name of the disk array is: Redundant Arrays of Inexpensive Disks, raid, which roughly means a cheap redundant disk array. Raid can use a technology (software or hardware) to integrate multiple smaller disks into a larger disk device. This

On the first, straight hit Linux:12 asked 1. What is Linux? Linux is an exotic operating system that is born on the web, growing up on the web, and ripe for networking. In the 1991, Finnish college student Linus Torvalds The idea of developing a

I. How does the system identify hard disks during initialization? 1. The system identifies the hard disk based on the MBR information at the beginning, including some execution files to load to the system. These execution files are the boot loader

first, disk basic knowledge1, disk and hard disk are all the unified address of the disk storage system. When the disk is working, the head is suspended in a radial motion above the disk platter, without touching each other.2. Purchase Disk:(1)