Linux iotop工具简介

iotop的简介：

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iotop是一款开源、免费的用来监控磁盘I/O使用状况的类似top命令的工具，iotop可以监控进程的I/O信息。它是Python语言编写的，与iostat工具比较，iostat是系统级别的IO监控，而iotop是进程级别IO监控。目前最新的版本为iotop 0.6。其官方网址http://guichaz.free.fr/iotop/

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iotop的安装：

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注意，iotop的安装有前提条件（如果操作系统不满足这些条件，iotop无法正确安装）：

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? 1：内核版本为2.6.20或更高版本

? 2：Python 2.7或更高的版本

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官方文档的详细介绍如下：

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Linux has always been able to show how much I/O was going on (the bi and bo columns of the vmstat 1 command).

Iotop is a Python program with a top like UI used to show of behalf of which process is the I/O going on. It requires Python ≥ 2.7 and a Linux kernel ≥ 2.6.20 with the TASK_DELAY_ACCT CONFIG_TASKSTATS,TASK_IO_ACCOUNTING and CONFIG_VM_EVENT_COUNTERS options on.

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iotop的yum安装

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yum安装是最简单、快捷的。前提条件是你有配置yum的源配置。

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[[email?protected] ~]# python -V

Python 2.7.5

[[email?protected] ~]# uname -a

Linux DB-Server 3.10.0-862.el7.x86_64 #1 SMP Fri Apr 20 16:44:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[[email?protected] ~]# 

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[[email?protected] ~]# yum -y install iotop

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iotop的源码安装

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tar -xvf iotop-0.6.tar.gz 

cd iotop-0.6

python setup.py build

python setup.py install

Usage: /usr/local/sbin/iotop [OPTIONS]

DISK READ and DISK WRITE are the block I/O bandwidth used during the sampling

period. SWAPIN and IO are the percentages of time the thread spent respectively

while swapping in and waiting on I/O more generally. PRIO is the I/O priority at

which the thread is running (set using the ionice command).

Controls: left and right arrows to change the sorting column,r to invert the

sorting order,o to toggle the --only option,p to toggle the --processes

option,a to toggle the --accumulated option,i to change I/O priority,q to

quit,any other key to force a refresh.

Options:

? --version???????????? show program‘s version number and exit

? -h,--help??????????? show this help message and exit

? -o,--only??????????? only show processes or threads actually doing I/O

? -b,--batch?????????? non-interactive mode

? -n NUM,--iter=NUM??? number of iterations before ending [infinite]

? -d SEC,--delay=SEC?? delay between iterations [1 second]

? -p PID,--pid=PID???? processes/threads to monitor [all]

? -u USER,--user=USER? users to monitor [all]

? -P,--processes?????? only show processes,not all threads

? -a,--accumulated???? show accumulated I/O instead of bandwidth

? -k,--kilobytes?????? use kilobytes instead of a human friendly unit

? -t,--time??????????? add a timestamp on each line (implies --batch)

? -q,--quiet?????????? suppress some lines of header (implies --batch)

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