UNIX Performance Penalties

Peter da Silva peter at ficc.ferranti.com
Thu Nov 1 06:03:47 AEST 1990


In article <2202 at sixhub.UUCP> davidsen at sixhub.UUCP (bill davidsen) writes:
>   If your application is compiled for 32 bit unix using a good
> compiler, and uses 32 bit int data, you will get about 2:1 (I didn't
> believe it until I measured it either).

I'm surprised it's so small. The speed difference for pure-CPU on
a 286 between small and large model (accessing 20000-int-long array
at effectively random versus accessing a 40000-int-long array) is on
the order of 11:1!
-- 
Peter da Silva.   `-_-'
+1 713 274 5180.   'U`
peter at ferranti.com



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