This article will describe about system monitor tool for CLI like server machine which does have no GUI environment. Interval of monitoring is 10 seconds. I like glances.
Table of Contents
1 top
- Most of Linux distribution have top command. The busybox which is used by embedded system has top command.
- Pressing m key shows graphical memory usage.
$ top -d 10
2 htop
- htop can specified more shorter period than top (100msec).
- CPU usage for each core.
$ htop -d 100 # 100 x 100msec = 10sec.
Userland thread is displayed by default. hide_userland_threads=1 will turn off userland thread.
$ mkdir -p ${HOME}/.config/htop/
$ echo "hide_userland_threads=1" >> ${HOME}/.htoprc
$ htop
$ # After terminating, config will be written to ${HOME}/.config/htop/htoprc.
3 glances
- Network, disk IO and file system usage.
- Color of string will be changed by usage.
- Log for high load average is displayed at the bottom.
$ glances -t 10
