[Info-ingres] CPU resources needed

[deneuve01]

Here's the scenario:
We have an Ingres 9.2.3 installation on a machine with 96 cores. In order to comply with our licensing, it was restricted to 4 cores. This cut our processing time down by about 75%. 
Is there a way to estimate the number of CPUs needed in order to sustain our installation at the prior level of performance ? We are on Solaris 10. 

Thank you!
Kris