From owner-freebsd-questions Sat Jan 12 3:52:17 2002 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (okc-65-31-201-166.mmcable.com [65.31.201.166]) by hub.freebsd.org (Postfix) with SMTP id E132F37B405 for ; Sat, 12 Jan 2002 03:52:13 -0800 (PST) Received: (qmail 62352 invoked by uid 100); 12 Jan 2002 11:52:13 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15424.9068.589476.493915@guru.mired.org> Date: Sat, 12 Jan 2002 05:52:12 -0600 To: Vivek Khera , jaideep.bhatia@wipro.com Cc: questions@freebsd.org Subject: Re: Maximum memory per process In-Reply-To: <90984732@toto.iv> X-Mailer: VM 6.90 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ From: "Mike Meyer" X-Delivery-Agent: TMDA/0.43 (Python 2.2; freebsd-4.4-STABLE-i386) Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Vivek Khera types: > >>>>> "JB" == Jaideep Bhatia writes: > JB> I have a few doubts and I would like to have expert opinion on those > JB> 1. How much physical RAM is supported by freeBSD 4.4 R (This should be a > JB> limitation of the processor and the motherboard, am I right?) > 4Gb, I believe. There are some bugs that cause 4.4R to die if you put in 4Gb of real memory. Hopefully, the fixes should all be in 4.5R. > JB> 2. How much virtual memory is supported? ( should be in tera bytes?) > Your virtual address space is still 32 bits, so per-process you can > only have that much. If you mean total, it is indeed tera bytes. > JB> 3. How much memory can be allocated per process? > I'm suspecting 4Gb, since that's the max you can address in 32 bits. I don't know if anyone has tried cranking things up that high, so there may be - in fact, probably are - bugs lurking there. As Oliver Fromme pointed out, this is all for the i386 architechture, not anything else. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message