nmon 13g+debian-1 (amd64 binary) in ubuntu quantal

 nmon 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.
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 Data is displayed on the screen and updated once every two seconds, using a
 dumb screen. However, you can easily change this interval to a longer or
 shorter time period.
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 The nmon tool can also capture the same data to a text file for later analysis
 and graphing for reports. The output is in a spreadsheet format (.csv).