iotop的簡介： iotop是一款開源、免費的用來監控磁碟I/O使用狀況的類似top命令的工具，iotop可以監控進程的I/O信息。它是Python語言編寫的，與iostat工具比較，iostat是系統級別的IO監控，而iotop是進程級別IO監控。目前最新的版本為iotop 0.6。其官方網址h... ...
iotop的簡介：
iotop是一款開源、免費的用來監控磁碟I/O使用狀況的類似top命令的工具，iotop可以監控進程的I/O信息。它是Python語言編寫的，與iostat工具比較，iostat是系統級別的IO監控，而iotop是進程級別IO監控。目前最新的版本為iotop 0.6。其官方網址http://guichaz.free.fr/iotop/
iotop的安裝：
註意，iotop的安裝有前提條件（如果操作系統不滿足這些條件，iotop無法正確安裝）：
1：內核版本為2.6.20或更高版本
2：Python 2.7或更高的版本
官方文檔的詳細介紹如下：
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.
iotop的yum安裝
yum安裝是最簡單、快捷的。前提條件是你有配置yum的源配置。
[root@DB-Server ~]# python -VPython 2.7.5
[root@DB-Server ~]# uname -aLinux 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[root@DB-Server ~]# [root@DB-Server ~]# yum -y install iotop
iotop的源碼安裝
wget http://guichaz.free.fr/iotop/files/iotop-0.6.tar.bz2
tar -xvf iotop-0.6.tar.gz
cd iotop-0.6
python setup.py build
python setup.py install
iotop的參數
# iotop --helpUsage: /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)
|
參數 |
長參數 |
參數描述 |
|
|
--version |
顯示版本號 |
|
-h |
--help |
顯示幫助信息 |
|
-o |
--only |
只顯示正在產生I/O的進程或線程，運行過程中，可以通過按o隨時切換 |
|
-b |
--batch |
非交互模式下運行，一般用來記錄日誌。 |
|
-n NUM |
--iter=NUM |
設置監控（顯示）NUM次，主要用於非交互模式。預設無限 |
|
-d SEC |
--delay=SEC |
設置顯示的間隔秒數，支持非整數 |
|
-p PID |
--pid=PID |
只顯示指定進程（PID）的信息 |
|
-u USER |
|
