Received: from maia.hub.org (maia-5.hub.org [200.46.204.29]) by mail.postgresql.org (Postfix) with ESMTP id 91E681337B7D for ; Sun, 30 Jan 2011 16:19:22 -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 69495-06 for ; Sun, 30 Jan 2011 20:19:16 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from hrndva-omtalb.mail.rr.com (hrndva-omtalb.mail.rr.com [71.74.56.123]) by mail.postgresql.org (Postfix) with ESMTP id 5E9801337B7A for ; Sun, 30 Jan 2011 16:19:14 -0400 (AST) X-Authority-Analysis: v=1.1 cv=dquaJDitHqzHCdqWSoZ6IgapSuTzW/4TaRYx9N9k4W8= c=1 sm=0 a=QWy0Aqb-3LoA:10 a=JRZeEW2aRuwA:10 a=8nJEP1OIZ-IA:10 a=RAii6je2cdnAH6ATCOpc6g==:17 a=_Ixf_7qHAAAA:8 a=Nj6uQwb2g1qORVsna8sA:9 a=fFz_2mgtKepLFWW_4kVk8_ZxsI0A:4 a=wPNLvfGTeEIA:10 a=ryAo9hy1-OkA:10 a=6vsjEBoLwlAA:10 a=0tfO7MgyNwYA:10 a=RAii6je2cdnAH6ATCOpc6g==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.73.87.196 Received: from [74.73.87.196] ([74.73.87.196:19597] helo=[192.168.1.100]) by hrndva-oedge01.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 5B/A5-14011-2C7C54D4; Sun, 30 Jan 2011 20:19:15 +0000 Message-ID: <4D45C607.4070101@vmsinfo.com> Date: Sun, 30 Jan 2011 15:11:51 -0500 From: Mladen Gogala Reply-To: mladen.gogala@vmsinfo.com Organization: VMS User-Agent: Thunderbird 2.0.0.24 (X11/20101213) MIME-Version: 1.0 To: "pgsql-performance@postgresql.org" Subject: Any experience using "shake" defragmenter? 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=-1.9 tagged_above=-10 required=5 tests=BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001 X-Spam-Level: X-Archive-Number: 201101/336 X-Sequence-Number: 42123 Did anyone try using "shake" while the cluster is active? Any problems with corruption or data loss? I ran the thing on my home directory and nothing was broken. I didn't develop any performance test, so cannot vouch for the effectiveness of the procedure. Did anyone play with that? Any positive or negative things to say about shake? -- Mladen Gogala Sr. Oracle DBA 1500 Broadway New York, NY 10036 (212) 329-5251 www.vmsinfo.com