Date: Thu, 02 Aug 2001 21:04:17 -0400 From: Sergey Babkin <babkin@bellatlantic.net> To: tlambert2@mindspring.com Cc: Rik van Riel <riel@conectiva.com.br>, craig <craiglei@pasia.com.cn>, freebsd-hackers@FreeBSD.ORG Subject: Re: How to visit physical memory above 4G? Message-ID: <3B69F891.3492FA21@bellatlantic.net> References: <Pine.LNX.4.33L.0108020728100.5582-100000@duckman.distro.conectiva> <3B6933F0.FC88449A@mindspring.com>
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Terry Lambert wrote: > > Rik van Riel wrote: > > > > > Only the FreeBSD memory management subsystem doesn't > > > > support it (yet?). > > > > > > It's not a question of "supporting it", it's a question of > > > whether or not it's a useful idea at all. > > > > > I have yet to see one person using it for anything. So far, > > > it is nothing more than marketing fodder: I haven't seen one > > > motherboard capable of more than 4G worth of SIMMs. Every box based on the Intel Saber board is capable of up to 16G. > > I've seen a bunch of the machines. They're rather > > popular with the database folks. > > Name an OS that supports this; more than likely, you will > have to appeal to a purpose built embedded system. UnixWare (A.K.A. OpenUNIX). As far as I understand, Oracle maps in the pieces of SGA as it needs them, keeping the total mapped size under 3G. -SB To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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