DSTAT an excellent tool which combines the overall stats of vmstat, iostat, netstat and ifstat. Dstat allows us to view all of the system resources in the real-time including the network bandwidth, network I/O , IRQ etc which helps the administrator to get an clear picture of what is going on in their server. It also reduces the headache of opening a separate shell/terminal to view the stats during bench tests.
Installing Dstat
Dstat rpm can be found here http://packages.sw.be/dstat/ make sure you are installing the right os version/arch of rpm. You can also use yum to install the rpm if you are having RHEL / FEDORA / CENTOS distributions
- yum install dstat
Getting started with dstat
To get a full stats using dstat
- dstat –full
To find the most CPU time (in ms)
- dstat –top-cputime
To check the NIC alone with the IRQ’s
- dstat -dnyc -N eth0 -C total -f 5
