Today I was working on an AIX server and I ran across a utility called nmon. It seems like top on steroids. Like top, it can report per process CPU and memory utilization, but also quite a bit more. It also seems to incorporate disk I/O, virtual memory usage, network throughput, NFS stats and more. And all from the terminal.
Since it seemed so potentially useful, I wondered if it was strictly an IBM tool. However it seems like there’s an open source version available on sourceforge: http://nmon.sourceforge.net/pmwiki.php
It’s also available in the Debian repositories. RHEL/CentOS is a little different; it needs to be installed from EPEL.
Has anyone else used this? If not, what do you use for system monitoring?
This is from a relatively idle workstation. The layout of the display is not fixed; you can add and remove different graphs and stats as needed.
Yep. Always have nmon installed. First encountered it under AIX, and have installed it everywhere ever since.
One other neat feature AIX has - a gooey for system management that tells you what the command-line to do the same thing is (SMIT). Very handy for working out actions ahead of the ‘change window’.
Yeah, everyone at work types ‘smitty’. Just for fun I typed ‘smit’ instead, and was pleased with the results. Not a lot of window dressing, but very useful.
