[NTLUG:Discuss] Utility to monitor performance of Linux server

[Richard Geoffrion]

I remember being referred to a linux utility that allowed me to log the 
various utilization statistics of a machine.  It wasn't tload or top, 
but some other utility with some name that (obviously) didn't lend 
itself to being remembered.  I remember having to run the program in a 
loop - outputting the results to a file so that I could gather 
statistics over time...like   % of time the processor was waiting on the 
disk to flush, % of time the disk was active....etc...

Does anyone know what utility that was?   I've  'whatis'ed in [/|/usr/] 
[bin|sbin] but can't seem to locate it.

-- 
Richard