On September 9th at 8:25:01 am, on machine ubuntu trigger CRON job with PID (process id) 15601 as user root. Here is a log file of syslog about the cron job I mentioned earlier Sep 9 08:25:01 ubuntu CRON: (root) CMD (if then munin-run apt_all update 7200 12 >/dev/null elif then munin-run apt update 7200 12 >/dev/null fi) Munin statistics update with cron job in 5 minute intervals, so after a while the graphs will look better. Here are few basic graphs, as you can see, while I had stress going on, the graphs were going high. sudo apt install htop Install htop in Ubuntu sudo dnf install htop Install. But for example firefox uses 7.9 % of memory capacity (this isn’t the whole true though) Analyzing Munin statistics The htop command is used to manage the system processes like CPU & memory. How to install htop ubuntu package on Ubuntu 20.04/Ubuntu 18.04/Ubuntu 19.04/Ubuntu 16.04 - Server Hosting Control Panel - Manage Your Servers, Docker Apps. It is similar to another commonly used utility called top. Apparently stress didn’t use any memory, which confuses me. htop is a system monitoring utility that runs on the terminal. ![]() I’m not quite sure why there are two processes running, but the main point is that we can analyze the load. First, make sure that all your system packages are up-to-date by running the following apt commands in the terminal. We can see that stress uses 24,4 and 19.9 % of maximum capacity. stress -cpu 8 -io 4 -vm 2 -vm-bytes 128m -timeout 20s This is why I inserted timeout to be 20 seconds. Stress will use all CPU Cores and load the machine quite heavily. Statisics look something like this without stressĪnd like this with stress. It plays three primary roles: System monitor. While stress is running, I’ll open another terminal window with htop. What is htop htop is a text-mode (console or terminal) process application for Unix systems. It is a text-mode application (for console or X terminals) and requires ncurses. While this is running I will monitor base stats with htop sudo apt-get install stress -y 1 Im using Ubuntu 22.04.1 LTS If I directly run htop, Ill get 1 2368661 segmentation fault (core dumped) htop But with sudo, it works normally. htop - an interactive process viewer This is htop, a cross-platform interactive process viewer. Next I will apply stress to computer with program called stress. Under localdomain.localhost directory you’ll find various charts and statistics about your computers hardware usage. ![]() ![]() This will open up directory of munin statistic files. Then I’ll open munin data with browser by entering file:///var/cache/munin/www to browser Next install munin and munin-node sudo apt-get install munin -y I’ll be using Ubuntu 14.04 live boot USB stick on a computer with following specs:įirst upgrade and update your Ubuntu sudo apt-get update In this blog post I will be monitoring Ubuntu 14.04 with various tools and stressing it out with stress.
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