From owner-freebsd-questions@FreeBSD.ORG Thu Oct 5 19:14:10 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4B77016A417 for ; Thu, 5 Oct 2006 19:14:10 +0000 (UTC) (envelope-from plathrop@squaretrade.com) Received: from mail.squaretrade.com (backup-mx.squaretrade.com [64.56.206.78]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1557943D70 for ; Thu, 5 Oct 2006 19:14:01 +0000 (GMT) (envelope-from plathrop@squaretrade.com) Received: from localhost (unknown [127.0.0.1]) by mail.squaretrade.com (Postfix) with ESMTP id DAB7227A4C57; Thu, 5 Oct 2006 12:14:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at squaretrade.com Received: from mail.squaretrade.com ([127.0.0.1]) by localhost (knockout.prod.squaretrade.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id IeHjeC06lhis; Thu, 5 Oct 2006 12:13:59 -0700 (PDT) Received: from [192.168.219.1] (unknown [192.168.219.1]) by mail.squaretrade.com (Postfix) with ESMTP id 6C1F227A4C5C; Thu, 5 Oct 2006 12:13:59 -0700 (PDT) Message-ID: <45255976.10903@squaretrade.com> Date: Thu, 05 Oct 2006 12:13:58 -0700 From: Paul Lathrop User-Agent: Thunderbird 1.5.0.7 (X11/20060922) MIME-Version: 1.0 To: Chuck Swiger References: <45254F1D.5000106@squaretrade.com> In-Reply-To: X-Enigmail-Version: 0.94.1.1 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig879111BB6FD378E46791D6AE" Cc: freebsd-questions@freebsd.org Subject: Re: PAE tuning 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: Thu, 05 Oct 2006 19:14:10 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig879111BB6FD378E46791D6AE Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Chuck Swiger wrote: > On Oct 5, 2006, at 11:29 AM, Paul Lathrop wrote: >> That's really good to know. Unfortunately, nobody seems to have writte= n >> down WHICH tunables need to be adjusted besides the one mentioned abov= e, >> nor is there any information on what "reasonable value" means! >> >> Can anyone point me at a resource for more information on this? >=20 > You're supposed to tune the appropriate values considering the workload= > the machine is going to handle. "man tuning" has some additional > information, but without describing what kind of tasks you plan to do > with this machine with 14GB of RAM, nobody is going to be able to > provide you with really specific advice... Good point. :-) I intend to deploy this system as a database server running Postgresql 8.1. The database is huge (30-40Gb) and can easily grow (it has gone as high as 100Gb). I expect as many as 1000 concurrent database connections now, and a potential need for scaling this up later. I'm aware of the SystemV memory tuning issues related to running Postgres on FreeBSD and I'll address those as soon as I can get the system to see the RAM. I tried just installing the stock PAE kernel, but the system still doesn't even acknowledge the RAM above 4Gb. Is this because I have not yet performed the tuning? Thanks for your help! --Paul --------------enig879111BB6FD378E46791D6AE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFJVl3X6ecHn3cW4kRAmt2AJ95RELX59jhyeHu669fDfDHA77BVgCfUJ1l Pu6dk6AXVsEKdJhD4J/3LAI= =9T3Q -----END PGP SIGNATURE----- --------------enig879111BB6FD378E46791D6AE--