Received: from localhost (unknown [200.46.204.184]) by developer.postgresql.org (Postfix) with ESMTP id BCEFB2E0064 for ; Thu, 3 Apr 2008 13:49:22 -0300 (ADT) Received: from developer.postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 47205-08 for ; Thu, 3 Apr 2008 13:49:17 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.5 Received: from wa-out-1112.google.com (wa-out-1112.google.com [209.85.146.178]) by developer.postgresql.org (Postfix) with ESMTP id 2AC522E0053 for ; Thu, 3 Apr 2008 13:49:18 -0300 (ADT) Received: by wa-out-1112.google.com with SMTP id m38so3622931waf.5 for ; Thu, 03 Apr 2008 09:49:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=tk5paheczqQqMUGHAC0yILoZ3R1nOO8y/wE/2U2ThcQ=; b=NKJ8iyQDbpDTZp6C5MLaO6HdU4OmBMOgUbZg1PLNd5o6ZrvqiIP/iZwLfeXwuLJP0IrnG6ksb6NhxUtLiJxOx1TK5+75qaQO2hBYXPJLXxtJ9pBkWguwtkAGzEkaSiSL8tkrjZWDJEo2Ogrq1UZkj2VQKyu19URCBQynv9r24jE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=dgmoY6m9zvWFja7qVPboYEnYial6NTFbSfahm73BAt5ZJCgbRxTOIYSy/v7o6C9fFfidI5W2ViEzNIbhexDCq2+DQlfKOOlMKM+JDHBpq05+DlRJLkaGKJ6I7f+2VrjbJPhvjmUakvJR3TuSn4+lYfJKstnEDzkHTBBmnBZTZBA= Received: by 10.114.175.16 with SMTP id x16mr40987wae.116.1207241358195; Thu, 03 Apr 2008 09:49:18 -0700 (PDT) Received: by 10.114.137.7 with HTTP; Thu, 3 Apr 2008 09:49:17 -0700 (PDT) Message-ID: Date: Thu, 3 Apr 2008 10:49:17 -0600 From: "Scott Marlowe" To: "sathiya psql" Subject: Re: Max shared_buffers Cc: bitaoxiao , "pgsql-performance@postgresql.org" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <47F324B4.6010404@mansionfamily.plus.com> <200804031256103599734@gmail.com> X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200804/32 X-Sequence-Number: 29525 On Thu, Apr 3, 2008 at 4:10 AM, sathiya psql wrote: > There is NO MAX.... > > It is according to your hardware you have, and the db you have. Not entirely true. on 32 bit OS / software, the limit is just under 2 Gig. I'd imagine that the limit on 64 bit hardware / software is therefore something around 2^63-somesmallnumber which is, for all practical purposes, unlimited.