Re: recommendation for NPAGEVIR

From: Alan E. Feldman (spamsink2001_at_yahoo.com)
Date: 12/30/03 

Date: 30 Dec 2003 07:47:09 -0800

helbig@astro.multiCLOTHESvax.de (Phillip Helbig---remove CLOTHES to reply) wrote in message news:<bsqai3$qlf$1@online.de>...
> NPAGEVIR parameter information:
> *** WARNING *** The value of NPAGEVIR (12888064) computed by AUTOGEN
> exceeds 33% of physical memory. Please consider whether
> this should be overridden by a smaller value.
>
> I got the above message after running AUTOGEN on a system which has been
> in the cluster for a couple of years and on which I've run AUTOGEN
> periodically. I've never seen the message before. The machine has
> 32 MB and is a VAXstation 4000/60.
>
> What should I hard-code the value (or bound by MIN and MAX) to be?

I would try to halve it, assuming it's about 4 times the size of
NPAGEDYN. It only needs to be as large as nonpaged dynamic memory will
ever expand to. It is basically an emergency shutoff valve for
nonpaged dynamic pool expansion.

Keep an eye on Nonpaged Dynamic Memory. NPAGEDYN is its initial size
upon booting and NPAGEVIR is its maximum allowable size upon
expansion. There is a small cost in memory for expansion -- about 4%
of the amount of expansion, IIRC. Read about these parameters in the
manuals. (Discussion based on VMS 6.1,6.2 VAX.)

What VMS version are you running?

Disclaimer: JMHO
Alan E. Feldman