Received: from maia.hub.org (maia-5.hub.org [200.46.204.29]) by mail.postgresql.org (Postfix) with ESMTP id CD5481337BA4 for ; Fri, 28 Jan 2011 14:46:18 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.29]) (amavisd-maia, port 10024) with ESMTP id 95583-05 for ; Fri, 28 Jan 2011 18:46:12 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from lpo-relay-04.vmsinfo.com (lpo-relay-04.vmsinfo.com [216.169.137.115]) by mail.postgresql.org (Postfix) with ESMTP id 71DD41337BA5 for ; Fri, 28 Jan 2011 14:46:11 -0400 (AST) X-IronPort-AV: E=Sophos;i="4.60,393,1291611600"; d="scan'208";a="28285203" Received: from unknown (HELO lpo-mailbox-02.vmsinfo.com) ([216.169.137.251]) by lpo-relay-04.vmsinfo.com with ESMTP; 28 Jan 2011 13:46:10 -0500 Received: from [10.101.43.35] (lpo-autonomy-p03.vmsinfo.com [216.169.135.234]) by lpo-mailbox-02.vmsinfo.com (Postfix) with ESMTP id 20BFD56272; Fri, 28 Jan 2011 13:46:10 -0500 (EST) Message-ID: <4D430EF1.8000800@vmsinfo.com> Date: Fri, 28 Jan 2011 13:46:09 -0500 From: Mladen Gogala Organization: VMS User-Agent: Thunderbird 2.0.0.24 (X11/20101027) MIME-Version: 1.0 To: "sthomas@peak6.com" CC: Anne Rosset , "pgsql-performance@postgresql.org" Subject: Re: FW: Queries becoming slow under heavy load References: <945629628BB0174D86709AFE6D1CDEF5016342E3@SP-EXCHMBC.sp.corp.collab.net><4D3F4ADD.6040304@squeakycode.net><945629628BB0174D86709AFE6D1CDEF501634305@SP-EXCHMBC.sp.corp.collab.net> <945629628BB0174D86709AFE6D1CDEF501634373@SP-EXCHMBC.sp.corp.collab.net> <4D42E13E.1050004@peak6.com> In-Reply-To: <4D42E13E.1050004@peak6.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.91 tagged_above=-10 required=5 tests=BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201101/323 X-Sequence-Number: 42110 Shaun Thomas wrote: > On 01/27/2011 11:12 PM, Anne Rosset wrote: > > >> Thanks for your response. >> We are over NFS for our storage ... >> > > NFS? I'm not sure you know this, but NFS has major locking issues > that would make it a terrible candidate for hosting a database. > > That depends on the implementation. Vendor supported NAS, running NFS3 or NFS4 should be OK. There are other databases that can use it, too. Some databases even have a built-in NFS client. -- Mladen Gogala Sr. Oracle DBA 1500 Broadway New York, NY 10036 (212) 329-5251 http://www.vmsinfo.com The Leader in Integrated Media Intelligence Solutions