nmon - Man Page

systems administrator, tuner, benchmark tool.

Examples (TL;DR)


This manual page documents briefly the nmon command. This manual page was written for the Debian distribution because the original program does not have a manual page.

nmon is is a systems administrator, tuner, benchmark tool. It can display the CPU, memory, network, disks (mini graphs or numbers), file systems, NFS, top processes, resources (Linux version & processors) and on Power micro-partition information.


nmon follow the usual GNU command line syntax, with long options starting with two dashes (`-'). nmon [-h] [-s <seconds>] [-c <count>] [-f -d <disks> -t -r <name>] [-x] A summary of options is included below.


FULL help information

Interactive-Mode: read startup banner and type: "h" once it is running For Data-Collect-Mode (-f)

-f            spreadsheet output format [note: default -s300 -c288]


-s <seconds>  between refreshing the screen [default 2]

-c <number>   of refreshes [default millions]

-d <disks>    to increase the number of disks [default 256]

           spreadsheet includes top processes
           capacity planning (15 min for 1 day = -fdt -s 900 -c 96)


nmon was written by Nigel Griffiths <nag@uk.ibm.com>

This manual page was written by Giuseppe Iuculano <giuseppe@iuculano.it>, for the Debian project (but may be used by others).


August 2009