Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id 87D3D632A47 for ; Fri, 3 Sep 2010 13:47:12 -0300 (ADT) 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 95050-04 for ; Fri, 3 Sep 2010 16:47:05 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by mail.postgresql.org (Postfix) with ESMTP id 28692632629 for ; Fri, 3 Sep 2010 13:47:05 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id o83Gl4qT024995; Fri, 3 Sep 2010 12:47:04 -0400 (EDT) To: Gerhard Wiesinger cc: Pavel Stehule , Andreas Kretschmer , pgsql-performance@postgresql.org Subject: Re: Major performance problem after upgrade from 8.3 to 8.4 In-reply-to: References: <20100830072230.GA28373@tux> <11111.1283185373@sss.pgh.pa.us> <12837.1283186981@sss.pgh.pa.us> <21281.1283433278@sss.pgh.pa.us> <22001.1283523290@sss.pgh.pa.us> Comments: In-reply-to Gerhard Wiesinger message dated "Fri, 03 Sep 2010 18:38:53 +0200" Date: Fri, 03 Sep 2010 12:47:04 -0400 Message-ID: <24994.1283532424@sss.pgh.pa.us> From: Tom Lane 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: 201009/11 X-Sequence-Number: 40214 Gerhard Wiesinger writes: > On Fri, 3 Sep 2010, Tom Lane wrote: >> Not even in that pgstartup.log file you sent stderr to? > Yes, also the redirected log file is empty. Also kernel log is empty. Huh. Try strace'ing the process to see what it's doing. > BTW: Shared memory can't be any issue? If you're not getting any log messages at all, you've got worse problems than shared memory. regards, tom lane