From owner-freebsd-smp Mon Jul 5 22: 1:15 1999 Delivered-To: freebsd-smp@freebsd.org Received: from posgate.acis.com.au (posgate.acis.com.au [203.14.230.14]) by hub.freebsd.org (Postfix) with ESMTP id 6EFEE15141 for ; Mon, 5 Jul 1999 22:01:07 -0700 (PDT) (envelope-from andymac@bullseye.apana.org.au) Received: from bullseye.apana.org.au (uucp@localhost) by posgate.acis.com.au (8.9.2/8.9.2/Debian/GNU) with UUCP id OAA23841; Tue, 6 Jul 1999 14:54:48 +1000 (EST) Received: from bullseye.apana.org.au (central.apana.org.au [203.9.107.245]) by bullseye.apana.org.au (8.8.8/8.8.8) with SMTP id JAA09267; Tue, 6 Jul 1999 09:11:41 +1000 (EST) (envelope-from andymac@bullseye.apana.org.au) Date: Tue, 6 Jul 1999 09:03:42 +1000 (EST) From: Andrew MacIntyre To: Dmitry Flitmann Cc: freebsd-smp@FreeBSD.ORG Subject: Re: Intel SC450NX hangs under high disk/memory load (2) In-Reply-To: Message-ID: X-X-Sender: andymac@bullseye.apana.org.au MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Mon, 5 Jul 1999, Dmitry Flitmann wrote: > I've read kern/11330 bug report from the GNATS database, > and tried to compile kernel which uses only 512M RAM. > > Everything seems to work fine. > > Any ideas - are there any problems with memory over 512M - > either kernel, or maybe some drivers/controllers? {...} > >MAXUSERS is 512 (or 256) I haven't seen any responses to your query via the list, so... Given that I remember your described usage patterns, I seem to recall seeing recommendations to use a smaller MAXUSERS value (say 128) and directly modify the specific values which may need to be increased, such as NMBCLUSTERS (hope I got that right...). I think it had to do with the MAXUSERS calculation causing kernel memory usage to expand too much. I also remember seeing a reference to Linux having a max of 1GB-64MB RAM, but was reasonably sure FreeBSD's limit was 4GB-64MB (but to use this much still required some recent bits from current). You may want to try searching the lists for more info on MAXUSERS and NMBCLUSTERS. -- Andrew I MacIntyre "These thoughts are mine alone..." E-mail: andrew.macintyre@aba.gov.au (work) | Snail: PO Box 370 andymac@bullseye.apana.org.au (play) | Belconnen ACT 2616 Fido: Andrew MacIntyre, 3:620/243.18 | Australia To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message