Date: Wed, 20 Feb 2002 01:46:43 -0800 From: "Dreamtime.net Inc." <clients@dreamtime.net> To: "Terry Lambert" <tlambert2@mindspring.com>, "Vincent Janelle" <random@carnagecopia.com> Cc: <freebsd-smp@FreeBSD.ORG> Subject: RE: Systat and Ram Message-ID: <AMEMLPOHFFIAJKMDAFDLKEAODOAA.clients@dreamtime.net> In-Reply-To: <3C736028.FBD0F093@mindspring.com>
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Actually, we need to run anywhere from 30 to 300 httpd processes, 20-25 megs each. We want to know how can we decide if we need more RAM based on 'systat' output. Sincerely, Stephen > -----Original Message----- > From: Terry Lambert [mailto:tlambert2@mindspring.com] > Sent: Wednesday, February 20, 2002 12:37 AM > To: Vincent Janelle > Cc: Dreamtime.net Inc.; freebsd-smp@FreeBSD.ORG > Subject: Re: Systat and Ram > > > Vincent Janelle wrote: > > Then you need something other than x86, because intel platforms > > only support 4GB (unless you're using PSE, but each process is > > still only limited to 4GB). > > > > If you need more than this you need to research other platforms > > such as alpha, sparc, sgi mips, itanium, etc which provide a > > 64bit address space and systems with support for greater than 4GB. > > You mean PAE (Page Address Extension), not PSE (Page Size > Extension). The PSE is use to get 4M and other page sizes > between 4M and 4K. > > Really, he ought to be reconsidering why he believes his > application needs more than 4G of physical RAM, and whether > he can achieve the same effect with a cluster. If that's > impossible, then and only then should he look at another > architecture, IMO. > > -- Terry > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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