X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 100C2D77EE for ; Tue, 30 Aug 2005 04:05:22 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 48069-01 for ; Tue, 30 Aug 2005 07:05:19 +0000 (GMT) Received: from floppy.pyrenet.fr (floppy.pyrenet.fr [194.116.145.2]) by svr1.postgresql.org (Postfix) with ESMTP id A4F14D7270 for ; Tue, 30 Aug 2005 04:05:15 -0300 (ADT) Received: by floppy.pyrenet.fr (Postfix, from userid 106) id B6C2F30952; Tue, 30 Aug 2005 09:05:16 +0200 (MET DST) From: William Yu X-Newsgroups: pgsql.performance Subject: Re: shared buffers Date: Tue, 30 Aug 2005 00:05:15 -0700 Organization: Hub.Org Networking Services Lines: 13 Message-ID: References: <4313B5F3.9000400@familyhealth.com.au> <20050830015454.54152.qmail@web53204.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@news.hub.org User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en In-Reply-To: <20050830015454.54152.qmail@web53204.mail.yahoo.com> To: pgsql-performance@postgresql.org X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.024 required=5 tests=[AWL=0.024] X-Spam-Level: X-Archive-Number: 200508/510 X-Sequence-Number: 14257 Carlos Henrique Reimer wrote: > I forgot to say that itīs a 12GB database... > > Ok, Iīll set shared buffers to 30.000 pages but even so "meminfo" and > "top" shouldnīt show some shared pages? > > I heard something about that Redhat 9 canīt handle very well RAM higher > than 2GB. Is it right? > Thanks in advance! RH9, like any 32-bit OS, is limited to 2GB address space w/o special tricks. However, it can access > 2GB for the OS disk cache using PAE if you are running the bigmem kernel.