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How get statistics about what is being looked up?

Dear team,

I am urgently trying to solve my 99.9% CPU usage problem, (which is
rapidly destroying my reputation!  Picture laboratories full of
students, unable to get started on their lab work for ten minutes).

However, I do not understand how to obtain statistics about what is
being looked up in the server.  Can anyone please give me some
pointers?  Are there any external tools?

I will now try increasing the logging level; I suspect that this may add
further to the CPU load, but perhaps I can find out what indexes I need
to add (if indeed lack of indexes is the problem).

Nick Urbanik   RHCE                                  nicku@vtc.edu.hk
Dept. of Information & Communications Technology
Hong Kong Institute of Vocational Education (Tsing Yi)
Tel:   (852) 2436 8576, (852) 2436 8579          Fax: (852) 2436 8526
PGP: 53 B6 6D 73 52 EE 1F EE EC F8 21 98 45 1C 23 7B     ID: 7529555D