From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1Ct6uI-0004LM-PJ for user-mode-linux-devel@lists.sourceforge.net; Mon, 24 Jan 2005 08:17:38 -0800 Received: from dgate2.fujitsu-siemens.com ([217.115.66.36]) by sc8-sf-mx2.sourceforge.net with esmtp (Exim 4.41) id 1Ct6uH-0006Ub-83 for user-mode-linux-devel@lists.sourceforge.net; Mon, 24 Jan 2005 08:17:38 -0800 Message-ID: <41F52128.6080202@fujitsu-siemens.com> From: Bodo Stroesser MIME-Version: 1.0 Subject: Re: [uml-devel] memory References: <267988DEACEC5A4D86D5FCD780313FBB03B12C4B@exch-03.noida.hcltech.com> <200501240111.j0O1BtoI004687@ccure.user-mode-linux.org> <200501240010.23514.rob@landley.net> <41F4DC94.7030900@fujitsu-siemens.com> <200501241811.j0OIBYXk002874@ccure.user-mode-linux.org> In-Reply-To: <200501241811.j0OIBYXk002874@ccure.user-mode-linux.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 24 Jan 2005 17:24:08 +0100 To: Jeff Dike Cc: Henrik Nordstrom , Rob Landley , user-mode-linux-devel@lists.sourceforge.net, "Vaibhav Sharma, Noida" , Doug Dumitru Jeff Dike wrote: > bstroesser@fujitsu-siemens.com said: > >>But that's not all, what's needed to have *support* for big memory. >>Linux needs to have one struct page for each physical mem page, which >>in the simple case of UML are placed in one memmap array. > > > The original poster is interested in the memory scalability of Linux, so > presumably he'll be looking into things like this :-) > > And it's not only this. It's the kernel stacks and page tables you'll have > for all the processes you'll be running on this large machine, inodes and other > file system data for all the files they have open, etc. Yes. That's the reason, why I estimated 1GB of memory for kernels internal use, additionally to the memmap. > > Jeff ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel