[Info-vax] page, swap and dump files; AUTOGEN, MODPARAMS.DAT, TESTFILES

[Phillip Helbig---undress to reply]

In article <a0vtg8-188.ln1 at Ubuntu.mike-r.com>, Henry Crun
<mike at rechtman.com> writes: 

> On 05/08/11 15:46, Phillip Helbig---undress to reply wrote:
> > In article<j1gk5h$9m0$1 at online.de>, helbig at astro.multiCLOTHESvax.de
> > (Phillip Helbig---undress to reply) writes:
> >
> >> If I run @SYS$UPDATE:SWAPFILES.COM and create a dump file of the
> >> expected size, the next run of AUTOGEN tells me to create a somewhat
> >> larger dump file.  If I then extend it with @SYS$UPDATE:SWAPFILES.COM,
> >> the NEXT run of AUTOGEN wants it to be even bigger.
> >>
> >> However, even with a big dump file in place, it still wants to make the
> >> page file big enough to handle the dump, even though, as far as I can
> >> tell, all I need is at most a quite small page file.
> >
> > Even if I create no new files between runs, the calculated size of the
> > dumpfile increases from run to run of AUTOGEN.
> >
> Because, IIRC, Autogen limits file increments to 10% of the file size, so 
> reaching a really large increase would take several runs.

But the differences are much less than 10%:

1814846
1814962
1815102
1815294
1815474

These are tiny changes.  What's the point?  Surely the size of the dump 
file depends on DUMPSTYLE and the amount of memory and nothing else, so 
what is the point of such fine-tuning?