dstat is a versatile tool for generating system resource statistics and replacement for vmstat, iostat, netstat, and ifstat. You can additionally monitor MySQL database activity, batter percentage info for laptop, number of dbus connections, fan speed, nfs utility, postfix, system temperature sensors, power usage, etc,., more & more. Dstat is packed with several powerful features and some of them are listed as follows.
It is so simple to install dstat on Ubuntu 16.04, and this tutorial covers the ground on the same process.
First, make sure you update your system by making use of the following command.
root@linuxhelp:~# apt-get update Hit:1 http://in.archive.ubuntu.com/ubuntu xenial InRelease Hit:2 http://ppa.launchpad.net/ondrej/php/ubuntu xenial InRelease . . Fetched 5,469 kB in 20s (264 kB/s) Reading package lists... Done
Once it is done, you shall install dstat by making use of the following command.
root@linuxhelp:~# apt-get install dstat Reading package lists... Done . . bingwallpaper Reading package lists... Done
dstat has been installed. Here are some of its usages.
Here is a small gist of the options used with dstat - cdngy
c : cpu : Total cpu usage
d : disk : Disk Utilization
n : net : Total Network usage
g : page : page stats
y : sys : system stats
After successful installation of dstat, simply fire dstat without any option, the application will get opened.
To show detailed information about Memory (used, buffer, cache & free), Swap (used & free) & Virtual Memory (allocated, free, major page fault & minor page fault) usage, run the following command.
root@linuxhelp:~#dstat --mem --swap –vm
To show detailed information about each CPU (including cpu0, cpu1, etc) and total usage run the command given below. It displays each CPU (user time, system time, idle time, steal time & wait time) process activity.
root@linuxhelp:~#dstat -C 0,1,2,total
To show detailed information about disk utilization (read & write) and disk I/O (read & write) utilization for particular disk run the below command. If you want to check total disk utilization & I/O, use dstat --disk --io.
root@linuxhelp:~#dstat --disk --io -D sda
You can display detailed information about network utilization (data receive and data send) for particular Ethernet make sure you run the following command. If you want to show all the Ethernet utilization, use dstat –net as follows.
root@linuxhelp:~# dstat --net -N ens33
You can also have detailed information about top CPU, top cputime (process using the most CPU time (in ms)), top disk I/O activity, top disk block I/O activity, top memory and top latency usage.
root@linuxhelp:~#dstat --top-cpu --top-cputime --top-io --top-bio --top-mem --top-latency
To show detailed information about (CPU, Disk, Memory, Process, Load & network) usage, which is very common for basic troubleshooting when server load is too high, make use of the following command.
root@linuxhelp:~#dstat --cpu --mem --proc --load --disk –net
To show detailed information about tcp (listen, established, syn, time_wait, close), udp (listen, active) and socket (total, tcp, udp, raw, ip-fragments) usage, you need to run the following command.
root@linuxhelp:~#dstat --tcp --udp –socket
Also, you can display statistic with every 5 seconds delay instead of default (1 sec delay) with any combination as per your requirement. The below combination shows about CPU and process statistic every 5 seconds.
root@linuxhelp:~#dstat --time --cpu --proc 5
By default, delay is 1 sec and count is unlimited and if you want to display statistic every 2 seconds delay with 10 counts on any combination as per your requirement. The below combination shows about cpu & process statistic every 2 seconds with 10 counts.
root@linuxhelp:~#dstat --time --cpu --proc 2 10
If you want to store the reports to file for further investigation, you can do by using the below format with any combination.
root@linuxhelp:~#dstat --output /opt/dstat-output.csv --cpu --mem --disk –io
See the output.CSV file date.
With this, the installation and usage of dstat on Ubuntu 16.04 gets completed.
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