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 0E2459FA5C8 for ; Fri, 16 Jun 2006 01:49:02 -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 16929-05 for ; Fri, 16 Jun 2006 01:48:48 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from floppy.pyrenet.fr (floppy.pyrenet.fr [194.116.145.2]) by postgresql.org (Postfix) with ESMTP id 238F39F9CAA for ; Fri, 16 Jun 2006 01:48:48 -0300 (ADT) Received: by floppy.pyrenet.fr (Postfix, from userid 106) id 54AB330955; Fri, 16 Jun 2006 06:48:47 +0200 (MET DST) From: "Qingqing Zhou" X-Newsgroups: pgsql.hackers Subject: Re: Test request for Stats collector performance improvement Date: Fri, 16 Jun 2006 12:48:27 +0800 Organization: Hub.Org Networking Services Lines: 16 Message-ID: References: <200606160357.k5G3vN112941@candle.pha.pa.us> X-Complaints-To: usenet@news.hub.org X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1807 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1807 To: pgsql-hackers@postgresql.org X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200606/792 X-Sequence-Number: 85025 "Bruce Momjian" wrote > > Any idea why there is such a variance in the result? The second run > looks quite slow. > No luck so far. It is quite repeatble in my machine -- runing times which show a long execution time: 2, 11, 14, 21 ... But when I do strace, the weiredness disappered totally. Have we seen any strange things like this before? Regards, Qingqing