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Date: Sat, 11 May 1996 15:44:56 -0700 (PDT)
From: Jaye Mathisen <mrcpu@cdsnet.net>
To: "John S. Dyson" <toor@dyson.iquest.net>
cc: Craig Shaver <craig@ProGroup.COM>, questions@FreeBSD.ORG
Subject: Re: inn & mmap
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Hmmm, I thought there was a consensus that something was flaky if the
active file changed size via newgroup/rmgroup messages with MMAP.

If I turn off all newgroup/rmgroup processing, then I have 0 problems with
the FreeBSD mmap.  If I process newgroup/rmgroups, I have problems.  Leads
me to believe something flaky there.

On Thu, 9 May 1996, John S. Dyson wrote:

> > >
> > >
> > > >>>>> Cove Schneider <cove@brazil.nbn.com> writes:
> > > >
> > > > Has any one run into any problems with inn using mmap under 2.1?
> > >
> > > Apparently there is a problem with mmap and inn on 2.1. The workaround
> > > is - don't use mmap. Fortunately FreeBSD's VM system is very good, so
> > > it won't cause much of a performance hit if you don't use mmap.
> > >
> >
> > Can you expand on this?  Where did you get the information about mmap
> > on FreeBSD causing problems with innd?  Is this a problem with the
> > FreeBSD implementation of mmap or is innd doing something wrong?
> > i.e., can it be fixed?
> >
> > Thanks for the info, I will reconfigure innd and reinstall.
> >
> I have been trying to simulate the problem (I have studied the active
> file mmap code in INND), to no avail.  Additionally, there are
> other OSes that fully implement mmap that have problems with INND.
> I really don't know where to look -- if ANYONE can simulate the problem,
> I would appreciate it.
>
> John
>