Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id 0FD179F971B for ; Fri, 10 Aug 2007 17:02:15 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-maia, port 10024) with ESMTP id 66273-01 for ; Fri, 10 Aug 2007 17:02:10 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from mail01.enterprisedb.com (webmail.enterprisedb.com [63.246.7.168]) by postgresql.org (Postfix) with ESMTP id 8F3CB9F9769 for ; Fri, 10 Aug 2007 17:02:10 -0300 (ADT) thread-index: AcfbiV2f9s/s3QCvTVC091p7fR3o+A== Content-Class: urn:content-classes:message Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4073 Received: from [192.168.0.5] ([81.6.216.155]) by mail01.enterprisedb.com with Microsoft SMTPSVC(6.0.3790.3959); Fri, 10 Aug 2007 16:02:21 -0400 Subject: Re: CLOG Patch From: "Simon Riggs" To: "Jignesh K. Shah" Cc: "Tom Lane" , "Josh Berkus" , , "Alvaro Herrera" In-Reply-To: <46BCA661.6000404@sun.com> References: <200707190828.59088.josh@agliodbs.com> <200707191819.13899.josh@agliodbs.com> <15685.1184895926@sss.pgh.pa.us> <200707192138.39679.josh@agliodbs.com> <46A0FA31.2080208@sun.com> <12002.1184955831@sss.pgh.pa.us> <46A1055F.9010304@sun.com> <12445.1184958793@sss.pgh.pa.us> <46A11116.5030905@sun.com> <14909.1184962561@sss.pgh.pa.us> <46A1205B.8010205@sun.com> <15343.1184965054@sss.pgh.pa.us> <1185180668.4284.149.camel@ebony.site> <23848.1185199901@sss.pgh.pa.us> <1185201556.4284.243.camel@ebony.site> <25095.1185202498@sss.pgh.pa.us> <1185205663.4284.249.camel@ebony.site> <1185212261.4284.270.camel@ebony.site> <1545.1185214760@sss.pgh.pa.us> <46A7D5AD.9000706@sun.com> <13162.1185405865@sss.pgh.pa.us> <46A8AFDF.3050804@sun.com> <26825.1185460816@sss.pgh.pa.us> <46A8BD62.2080904@sun.com> <1185465076.4190.87.camel@ebony.site> <46B38B83.1000906@sun.com> <1186172987.4136.18.camel@ebony.site> <46BCA661.6000404@sun.com> Content-Type: text/plain; charset="iso-8859-1" Date: Fri, 10 Aug 2007 21:03:19 +0100 Message-ID: <1186776199.4505.39.camel@ebony.site> MIME-Version: 1.0 X-Mailer: Evolution 2.8.2 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Aug 2007 20:02:22.0015 (UTC) FILETIME=[5CF8A4F0:01C7DB89] X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200708/113 X-Sequence-Number: 26243 On Fri, 2007-08-10 at 13:54 -0400, Jignesh K. Shah wrote: > I tried with CLOG 24 also and I got linear performance upto 1250 users > after which it started to tank. 32 got us to 1350 users before some > other bottleneck overtook it. Jignesh, Thanks for testing that. It's not very clear to everybody why an extra 100 users is useful and it would certainly help your case if you can explain. -- Simon Riggs EnterpriseDB http://www.enterprisedb.com