Our shop is running 180 MIPS and using them all (!) between 10 and 3 
everyday.  There are times when we see CICS spike to 80 and even 90%.  The 
same is true for VPS/DRS--it does this forms translation from .tif files that 
can 
eat up 8 cpu seconds for a single form.  We use WLM to favor CICS over the 
print.

We did do some modeling for this box (I don't recall exactly what), but it was 
inconclusive, and couched in "mileage may vary" and "that depends."  I think 
that were we to replace the UP with an MP of similar MIPS rating, overall 
things would run better, but there would be times that would be slower.  
Would it be a good tradeoff?  Maybe, but I can't conscientously push for it 
without being more certain.However, Siemens continues to recommend the UP, 
so that is the way we are going.  

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