Real-time performance monitoring with Netdata
Multimeter

What cannot be measured cannot be improved. Netdata lets you measure almost anything – at least as long as it's about the performance and health of a Linux computer.
Netdata is a real-time monitoring tool for Linux systems. You can't use Netdata to log a long history of monitored data, but if you're looking for a tool that will let you explore a snapshot of the system state from thousands of different angles, Netdata is a powerful alternative.
You can't ask Netdata for the values for yesterday or even the last hour. In fact, Netdata usually only shows you the last five minutes. However, it displays all measured values from a fast round robin memory in RAM with a resolution of one second. Netdata strives to draw as complete a picture as possible of the performance and health of a computer at the current point in time with minimal expense of computing power and I/O.
Getting Started with Netdata
Netdata is available for Linux, macOS, and FreeBSD. Linux installation is very easy. Several distributions, including Ubuntu, Debian, and openSUSE, make Netdata available in their repositories. If Netdata isn't available through your distro's repositories, you can download the source code from GitHub [1]; an installer script included with the GitHub files makes the installation easy.
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