X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id A4A7B9FA4AF for ; Tue, 2 May 2006 11:59:04 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 29359-03 for ; Tue, 2 May 2006 11:58:55 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from floppy.pyrenet.fr (news.pyrenet.fr [194.116.145.2]) by postgresql.org (Postfix) with ESMTP id 309199F9D4D for ; Tue, 2 May 2006 11:58:54 -0300 (ADT) Received: by floppy.pyrenet.fr (Postfix, from userid 106) id CA81C30CDC; Tue, 2 May 2006 16:58:52 +0200 (MET DST) From: Fortuitous Technologies Subject: Re: Running on an NFS Mounted Directory User-Agent: Pan/0.14.2.91 (As She Crawled Across the Table (Debian GNU/Linux)) Message-Id: X-Newsgroups: pgsql.performance References: <20060427023542.GA14672@weaver.tuc.noao.edu> <20060427045524.GV97354@pervasive.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 15 Date: Tue, 02 May 2006 14:58:51 GMT X-Complaints-To: abuse@earthlink.net Organization: EarthLink Inc. -- http://www.EarthLink.net To: pgsql-performance@postgresql.org X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200605/74 X-Sequence-Number: 18861 On Wed, 26 Apr 2006 23:55:24 -0500, Jim C. Nasby wrote: > On Wed, Apr 26, 2006 at 07:35:42PM -0700, Steve Wampler wrote: >> On Wed, Apr 26, 2006 at 10:06:58PM -0400, Ketema Harris wrote: >> > I was wondering if there were any performance issues with having a data >> > directory that was an nfs mounted drive? Say like a SAN or NAS device? Has >> > anyone done this before? >> >> My understanding is that NFS is pretty poor in performance in general, NFS is not a good choice for several reasons. First, NFS takes priority in the system kernel, and will slow down all other operations. Your best choice, as pointed out by others, is a DAS solutions. If you must use NFS, you should consider putting it on a fast dedicated network by itself.