nmon (Nigel's performance MONitor) This systems administrator, tuner, benchmark tool gives you a huge amount of important performance information in one go. It can output the data in different ways. You can display the CPU, memory, network, disks (mini graphs or numbers), file systems, NFS, top processes, resources. Save the data to a comma separated file for analysis and longer term data capture. Directly put your data into rrd database. Using export NMON=$(parms) you can change the default view.