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From: John Dyson <dyson@dyson.iquest.net>
Message-Id: <199612172119.QAA05589@dyson.iquest.net>
Subject: Re: Almost have mmap() figured, I think...
To: terry@lambert.org (Terry Lambert)
Date: Tue, 17 Dec 1996 16:19:17 -0500 (EST)
Cc: scrappy@hub.org, terry@lambert.org, hackers@freebsd.org
In-Reply-To: <199612171701.KAA08511@phaeton.artisoft.com> from "Terry Lambert" at Dec 17, 96 10:01:37 am
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> 
> The Stevens book is the bible... but that example you might want to
> consider most relevent is in the cp code in /src/bin/cp/utils.c.
> 
> John: there is still "#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED" in that
> code... is that right now?
> 
The ifdef can go away now -- no problem.  The problem is a performance
issue where copying a large file will cause lots of memory usage...  The
buffer cache is better tuned for file I/O.

John