(Apologies for replying to my own email.)

One metric the template didn't ask for, I just noticed, is the number of hits 
per second. 

We average about 2 hits per second, which is very low, even if most of these 
hits are actual page views, not just layout elements. However, both our webapp 
and database servers are under constant load, the latter in particular.

Actual load average numbers are meaningless for comparison because they depend 
so much on the way the OS kernel implements them, so I won't give them. Suffice 
to say, though, that we had to ask the people running our university search 
engine and similar services to throttle their index rate so the servers 
wouldn't get overloaded.

Also of note is that the problems are mostly on the database and webapp end, 
there are no problems with I/O (disk or network).


--
Tom De Mulder <[email protected]> - Cambridge University Computing Service
+44 1223 3 31843 - New Museums Site, Pembroke Street, Cambridge CB2 3QH


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