Date: Tue, 17 Dec 1996 16:19:17 -0500 (EST) From: John Dyson <dyson@dyson.iquest.net> To: terry@lambert.org (Terry Lambert) Cc: scrappy@hub.org, terry@lambert.org, hackers@freebsd.org Subject: Re: Almost have mmap() figured, I think... Message-ID: <199612172119.QAA05589@dyson.iquest.net> 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
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