Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ncar!ico!rcd
From: rcd@ico.isc.com (Dick Dunn)
Newsgroups: comp.unix.aix
Subject: Re: AIX 3.1 C compiler needs a tty ?
Summary: explanation please?!?
Message-ID: <1990Aug22.002727.13323@ico.isc.com>
Date: 22 Aug 90 00:27:27 GMT
References: <1990Aug21.113151.7882@cti-software.nl> <14465@diamond.BBN.COM>
Organization: Interactive Systems Corporation, Boulder, CO
Lines: 27

mlandau@bbn.com (Matthew Landau) writes, in response to a make-dying
problem:

> Just how large WAS this "large" make?  And how much swap space does your
> machine have?  We found that under AIX 3.1, if a job runs out of swap 
> space (as our makes used to do), they're sent a signal 9 by the kernel.  

That much I can believe OK...it's harsh but ya gotta do something and there
aren't a lot of options.  What I don't get is...

> Increasing paging space from 60 MB to 120 MB made that problem disappear.
> Yes, that's 120 MB of paging space, to create a 7 MB binary image.  Why
> it takes so much, I'll never understand,...

No, wait, please try to understand.  Inquiring minds want to know--how on
earth can you eat that much swap space???  Either you've misconstrued
something that's going on, but I don't think so, or there is some dread-
ful problem (i.e., bug, not just performance).  60 Mb of swap space, even
to create a large executable, is just *not* realistic.  (Disk may be cheap,
but it ain't *that* cheap!:-)

Could somebody who's down in the internals please explain to someone
sitting on the sidelines how you could possibly need > 60 Mb of swap???
This is just unreal.  What causes this problem?
-- 
Dick Dunn     rcd@ico.isc.com -or- ico!rcd       Boulder, CO   (303)449-2870
   ...Are you making this up as you go along?