parameters on CDC Wren IV, Adaptec 1542b

[Bill Heiser]

In article <1990Nov04.004934.232 at nstar.uucp> larry at nstar.uucp (Larry Snyder) writes:
>
>what you need to do is to change one item at a time - then
>bench the system, change another - then bench, etc..   

Thanks for the feedback Larry.  What utility are you using to do 
your benchmarking?


>I have cache enabled (made a 10% difference) and changed the
>buffer ratios from 4 to 16 (made a + difference on large disk IO,
>and - on small; but since most of mine is large - I changed it)..

I'm a little uncertain about the "buffer ratios" -- I didn't see any
explanation of it in the lenghy aha1542 manual -- do you have anything
that describes them?  My "largest" disk IO activity is news processing
(Cnews) and compiling software -- does that qualify as "large", and 
would you expect it to benefit from the increase in buffer ratios?

Thanks for the info.
Bill


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