From owner-freebsd-questions@FreeBSD.ORG Mon May 14 04:34:49 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1E36A16A400 for ; Mon, 14 May 2007 04:34:49 +0000 (UTC) (envelope-from redchin@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.170]) by mx1.freebsd.org (Postfix) with ESMTP id 042B113C46C for ; Mon, 14 May 2007 04:34:47 +0000 (UTC) (envelope-from redchin@gmail.com) Received: by ug-out-1314.google.com with SMTP id 71so990934ugh for ; Sun, 13 May 2007 21:34:46 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=h+hL2cu6BZGNXkeuhCBP4hrRWocOus7++YIDWtgq4AIH2qVzf4bYN2Lc3t947n3kBdyiwDmQ0iGLv7t+68JIunHuwPl7YoMHBbRti5M+OtGRYBpEFZwGmP1VKCELcxcNFrrLnS2onn4AbApWjPV5U2WydGNa03gJUWxsflfoUKk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=p3CU9fH6vU2fAR2tcyB7SZLxcZC7sauALqcKZMygUbpGPW2i+Gyiki2xpp2fBR9SqOnhrmsxHH5WWUv0dqHldRVy8RWT5M+xy3rJtPou+47W/kHuJiJbH70NWy3xlo4QLWSoP/2oG8UkXpRZ0Q6/JONT392qIOzI8TwrzSC3q60= Received: by 10.67.29.7 with SMTP id g7mr3259186ugj.1179117286657; Sun, 13 May 2007 21:34:46 -0700 (PDT) Received: by 10.67.103.15 with HTTP; Sun, 13 May 2007 21:34:46 -0700 (PDT) Message-ID: <1d3ed48c0705132134t4a677c14kfca30c5ee10881f8@mail.gmail.com> Date: Sun, 13 May 2007 21:34:46 -0700 From: "Kevin Downey" To: "freebsd-questions@freebsd.org List" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: mdconfig -t malloc limits X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 May 2007 04:34:49 -0000 I am building a shiny new desktop, the only thing I don't have right now is the hard drive, so I have been booting a minimal system off a flash drive. The box has two gigs of ram. if I try to create a malloc backed md device bigger then 300mb(this is not the exact limit but it is between 300mb and 400mb) it fails. If I use -o reserve the mdconfig command fails and if I don't then when I try and use that space FreeBSD crashes. It seems like there should be enough unused memory to create a 1gb malloc backed md. I have no swap because the only drive is a flash drive. / is mounted read only. /tmp and /var are 124mb malloc backed md devices What is the deal? Is this some tunable limit? Should I fire up memtest? FreeBSD mona.nexus.lan 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 12 11:05:30 UTC 2007 root@dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/SMP i386 -- "The biggest problem with communication is the illusion that it has occurred." G. B. Shaw www.thelastcitadel.com