Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id 3A80D1337B51 for ; Wed, 29 Dec 2010 20:54:48 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 86534-02 for ; Thu, 30 Dec 2010 00:54:37 +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 B02D91337B49 for ; Wed, 29 Dec 2010 20:54:36 -0400 (AST) X-Authority-Analysis: v=1.1 cv=UQuFHoD2CPQ248x8AXEbKhr4z9AaDqApxmEl3BhfZ64= c=1 sm=0 a=IRPQ0MwjyIkA:10 a=8nJEP1OIZ-IA:10 a=RAii6je2cdnAH6ATCOpc6g==:17 a=_Ixf_7qHAAAA:8 a=g6-1X4vnUyO2KDVFbyQA:9 a=HOPMGX7qzyWBCGcxl_EA:7 a=b_2P1KuM0AiQS4S6Gx-92gDm6oUA: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] ([74.73.87.196:54232] helo=[192.168.1.103]) by hrndva-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 24/0F-00963-C48DB1D4; Thu, 30 Dec 2010 00:54:36 +0000 Message-ID: <4D1BD84C.6080706@vmsinfo.com> Date: Wed, 29 Dec 2010 19:54:36 -0500 From: Mladen Gogala User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: long wait times in ProcessCatchupEvent() References: <4D1B8BD9.4060105@emolecules.com> <304.1293652739@sss.pgh.pa.us> In-Reply-To: <304.1293652739@sss.pgh.pa.us> 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: 201012/331 X-Sequence-Number: 41783 On 12/29/2010 2:58 PM, Tom Lane wrote: > It happened for you on 8.4 too? In that previous thread you were still > on 8.3. If you did see it on 8.4 then it wasn't sinval ... > > regards, tom lane > May I ask what exactly is "sinval"? I took a look at Craig's problem and your description but I wasn't able to figure out what is sinval lock and what does it lock? I apologize if the question is stupid. -- Mladen Gogala Sr. Oracle DBA 1500 Broadway New York, NY 10036 (212) 329-5251 www.vmsinfo.com