From owner-freebsd-questions  Mon Dec 13  2: 1:31 1999
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From: Sheldon Hearn <sheldonh@uunet.co.za>
To: "Artem Koutchine" <matrix@gerpa.ru>
Cc: questions@FreeBSD.ORG
Subject: Re: questions about file locking and memory usage 
In-reply-to: Your message of "Sun, 12 Dec 1999 20:05:10 +0300."
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Date: Mon, 13 Dec 1999 12:01:00 +0200
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On Sun, 12 Dec 1999 20:05:10 +0300, "Artem Koutchine" wrote:

> 1) Memory usage by programs
> 
> C source :
> main () {
>     while(1);
> }
> 
> as you see, it does nothing, nor it uses any libraries. ust an
> empty look.

Wrong.  The default for cc in FreeBSD is to link against some standard
libraries.  Try the -nostdlib option to cc.

> 2) How do i lock file reliably w/o depending whether it is on local
> FS or NFS.
>
> flock does not work on NFS as i know, .lock locking made in a
> normal simple way does not work either. What wouold be the
> corrent and reliable way?

Anything you do here will end up being homebrew.  Locking is a known
bugbear with NFS.

> 3) Code sharing
> When i am runnning 15 perl scripts i am sure that some part
> of code is shared among them

Yes, probably the text segment of the perl interpreter.

Ciao,
Sheldon.


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