From owner-freebsd-arch Tue Jan 30 21:33:29 2001 Delivered-To: freebsd-arch@freebsd.org Received: from rina.r.dl.itc.u-tokyo.ac.jp (cvsup2.r.dl.itc.u-tokyo.ac.jp [133.11.199.247]) by hub.freebsd.org (Postfix) with ESMTP id 54B4237B6A7 for ; Tue, 30 Jan 2001 21:33:11 -0800 (PST) Received: from rina.r.dl.itc.u-tokyo.ac.jp (localhost [127.0.0.1]) by rina.r.dl.itc.u-tokyo.ac.jp (8.11.1+3.4W/3.7W-rina.r-0.1-11.01.2000) with ESMTP id f0V5X5g05152; Wed, 31 Jan 2001 14:33:07 +0900 (JST) Date: Wed, 31 Jan 2001 14:33:04 +0900 Message-ID: From: Seigo Tanimura To: arch@FreeBSD.org Subject: Bumping up {MAX,DFL}*SIZ in i386 Cc: Seigo Tanimura User-Agent: Wanderlust/1.1.1 (Purple Rain) SEMI/1.13.7 (Awazu) FLIM/1.13.2 (Kasanui) MULE XEmacs/21.1 (patch 12) (Channel Islands) (i386--freebsd) Organization: Digital Library Research Division, Information Techinology Centre, The University of Tokyo MIME-Version: 1.0 (generated by SEMI 1.13.7 - "Awazu") Content-Type: text/plain; charset=US-ASCII Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Last night I ran a program processing very large amount of data. As the program ate up all of the available address space for data, I increased MAXDSIZ to 1.5GB so that the program ran successfully. Now that even an entry-model workstation can equip memory up to 1GB or more, MAXDSIZ and DFLDSIZ should be increased so that a process can make use of large memory. On the other hand, MAXDSIZ is also likely to hit VM_MAXUSER_ADDRESS, which is generally 3GB and may be 2GB if the size of KVM is expanded to the maximum. MAXDSIZ should thus not exceed 2GB. I propose the following values for the new user address space constraints: MAXTSIZ and DFLTSIZ: 256MB MAXDSIZ and DFLDSIZ: 1.5GB MAXSSIZ: 128MB Total: 1.875G (= 2G - 128M) MAXTSIZ and DFLTSIZ is bumped as we may want to run a large binary. A large binary calls for deep function calls, hence MAXSSIZ is bumped as well. These values are likely to be the final ones for i386 before jumping into ia64. Any comments or flames? -- Seigo Tanimura To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message