in gnome: add to panel -> system monitor
http://net-snmp.sourceforge.net/
yum install net-snmp
yum install net-snmp-utils
http://pagesperso-orange.fr/sebastien.godard/
* iostat(1) reports CPU statistics and input/output statistics for devices, partitions and network filesystems.
* mpstat(1) reports individual or combined processor related statistics.
* pidstat(1) reports statistics for Linux tasks (processes) : I/O, CPU, memory, etc.
* sar(1) collects, reports and saves system activity information (CPU, memory, disks, interrupts, network interfaces, TTY, kernel tables,etc.)
* sadc(8) is the system activity data collector, used as a backend for sar.
* sa1(8) collects and stores binary data in the system activity daily data file. It is a front end to sadc designed to be run from cron.
* sa2(8) writes a summarized daily activity report. It is a front end to sar designed to be run from cron.
* sadf(1) displays data collected by sar in multiple formats (CSV, XML, etc.) This is useful to load performance data into a database, or import them in a spreadsheet to make graphs.
gnome-lokkit
