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Date:      Fri, 27 Oct 1995 23:37:41 -0600
From:      Nate Williams <nate@rocky.sri.MT.net>
To:        root <root@mikeperry.pr.mcs.net>
Cc:        questions@freebsd.org
Subject:   Re: ISP system?
Message-ID:  <199510280537.XAA06481@rocky.sri.MT.net>
In-Reply-To: <Pine.LNX.3.91.951028001332.266B-100000@mikeperry.pr.mcs.net>
References:  <Pine.LNX.3.91.951028001332.266B-100000@mikeperry.pr.mcs.net>

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> Now my ?'s are: 
> 1. How many users do you think I run comfortably offa this config.

Lots.  It depends on what your users are doing, so it's hard to say.
Email and news you should be able to handle 30-50 on the box easy.  If
they all start compiling stuff, 5-10. :)

> 2. Do I have too much/too little disk and RAM (I heard a rumor that huge 
>  amounts of ram can bog a sys down.)

The newer Triton chipsets don't cache the memory above 64MB, so you take
a big performance hit.  And, if you don't use the Triton chipset you
also take a big performance hit.

> 3. Are my choices for the machines vs what they run wise?

I think it's way overkill, but it depends on how many customers you have
off the bat.  It's better to start a bit conservatively than to go
hog-wild and not make it cause you can't make your payroll.

> 4. Is it possible to rebuild FreeBSD offa the cdrom discs?

If you build a symlink tree off the CD, yes.

>  (I wanna -O3 the whole sys) 

No, you don't unless you have a compiler other than gcc to use.  The
optimizer in gcc for the x86 line has lots of problems.  Any
optimization level over -O has a higher chance of bugs.  I avoid using
anything but the default optimization just for safety's sake, especially
if my livlihood was based on my machines being 'stable' and 'bug-free'.

>  Is it already optimised?

Pretty much, although it will be nice if the GNU folks come out with a
version of their compiler with Pentium optimizations.

>  And how much can I make in "one 
>  command" (as claims walnut creek cdrom co. "you can build the whole 
>  source tree in one command": what is considered the source tree?

The entire source tree, and I believe all of the ports can be made as
well, although it's not setup to do that automatically since most folks
don't have that kind of disk space lying around.

# cd /usr/src
# make world
[ Wait a couple days ]

The entire machine is completely re-built and installed from scratch
modulo the setup files in /etc and the kernel.

> apps too?)

The 'make world' w/out the source tree re-builds all of the binaries in
the base system.

> 5. Any good books on ISPing you recomend?

I think the market is so new, and the complexities so varied that a good
book couldn't be written yet.


Nate



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