Memory reserved by the OS to allocate as buffers when process need themĮstimation of how much memory is available for starting new applications, without swapping.Ĭompared to the /proc/meminfo file, the free command provides less information. Unused memory (free= total – used – buff/cache)

Memory currently in use by running processes (used= total – free – buff/cache) Now run the htop monitoring tool by executing following command on the terminal.The data represents the used/available memory and the swap memory figures in kilobytes. In Debian and Ubuntu, you can fetch htop by typing: # sudo apt-get install htop # yum install htopįedora users can easily install htop using Fedora Extras repository by typing: # yum install htop Once RPMforge repository has been installed, you can hit the following yum command to fetch and install the htop package as shown. On RHEL/CentOS – 64-bit OS - For RHEL/CentOS 7. # rpm -ihv rpmforge-release-0.5.i386.rpm # rpm -ihv rpmforge-release-0.5.i686.rpm On RHEL/CentOS – 32-bit OS - For RHEL/CentOS 6.

Press “e” to print the set of environment variables for a process.

In htop you no longer needed to enter process number or priority value to re-nice a process.

In htop you can kill more than one processes at once without inserting their PIDs.

It starts very quickly as compared top, because it doesn’t wait to fetch data during startup.

In htop you can scroll vertically to view the full process list, and scroll horizontally to view the full command lines.

Htop has numerous other user-friendly features, which are not available under top command and they are: Htop is an interactive real time process monitoring application for Linux/Unix like systems and also a handy alternative to top command, which is default process monitoring tool that comes with pre-installed on all Linux operating systems.

Install htop 2.0 – Better Linux Process Monitoring for RHEL, CentOS & Fedora

Install htop centos 7