Received: from localhost (maia-4.hub.org [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 17A569FC304 for ; Fri, 23 Feb 2007 17:33:20 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-new, port 10024) with ESMTP id 84039-01 for ; Fri, 23 Feb 2007 17:33:17 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from www.3times25.net (duck.3times25.net [66.23.211.34]) by postgresql.org (Postfix) with ESMTP id EF2AD9FC2EF for ; Fri, 23 Feb 2007 17:33:16 -0400 (AST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by www.3times25.net (Postfix) with ESMTP id A1FBA5403B for ; Fri, 23 Feb 2007 16:33:20 -0500 (EST) Message-ID: <45DF5D9F.7050602@3times25.net> Date: Fri, 23 Feb 2007 16:33:19 -0500 From: Geoffrey User-Agent: Thunderbird 1.5.0.8 (X11/20061025) MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: which Xeon processors don't have the context switching problem References: <45DF3B15.1070609@3times25.net> <200702231330.57014.josh@agliodbs.com> In-Reply-To: <200702231330.57014.josh@agliodbs.com> 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=0.061 tagged_above=0 required=5 tests=AWL, BAYES_50 X-Spam-Level: X-Archive-Number: 200702/261 X-Sequence-Number: 23315 Josh Berkus wrote: > Geoffrey, > >> I recall a reference on the list indicating that newer Xeon processors >> don't suffer from the context switching problem reported last year. > > Just to be clear, it's a software problem which affects all architectures, > including AMD and Sparc. It's just *worse* on the PIII and P4 generation > Xeons. Thanks, that's what I need to hear. They've since cut a deal for Operton based hardware, so the point is now moot. -- Until later, Geoffrey Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. - Benjamin Franklin