X-Original-To: pgsql-hackers-postgresql.org@postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 3125C9FA5D2 for ; Thu, 15 Jun 2006 22:56:46 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 83513-02 for ; Thu, 15 Jun 2006 22:56:37 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by postgresql.org (Postfix) with ESMTP id 6C9CD9FA160 for ; Thu, 15 Jun 2006 22:56:37 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.6/8.13.6) with ESMTP id k5G1uY7m011764; Thu, 15 Jun 2006 21:56:34 -0400 (EDT) To: "Qingqing Zhou" cc: pgsql-hackers@postgresql.org Subject: Re: Test request for Stats collector performance improvement In-reply-to: References: <200601021840.k02Ieed21704@candle.pha.pa.us> <200606150405.k5F45cH11445@candle.pha.pa.us> <27745.1150381653@sss.pgh.pa.us> Comments: In-reply-to "Qingqing Zhou" message dated "Fri, 16 Jun 2006 09:34:12 +0800" Date: Thu, 15 Jun 2006 21:56:34 -0400 Message-ID: <11763.1150422994@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200606/768 X-Sequence-Number: 85001 "Qingqing Zhou" writes: > "Tom Lane" wrote >> Hm? I don't see any improvement there: > I was referening this sentence, though I am not sure why that's the > expectation: >> "Bruce Momjian" wrote >> If the patch worked, the first and third times will be similar, and >> the second time will be high. You need to label your results more clearly then. I thought you were showing us three repeats of the same test, and I gather Bruce thought so too... regards, tom lane