From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 26 Dec 2002 04:26:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 26 Dec 2002 04:26:52 -0500 Received: from packet.digeo.com ([12.110.80.53]:27309 "EHLO packet.digeo.com") by vger.kernel.org with ESMTP id ; Thu, 26 Dec 2002 04:26:52 -0500 Message-ID: <3E0ACD43.F27592FD@digeo.com> Date: Thu, 26 Dec 2002 01:34:59 -0800 From: Andrew Morton X-Mailer: Mozilla 4.79 [en] (X11; U; Linux 2.5.52 i686) X-Accept-Language: en MIME-Version: 1.0 To: Paolo Ciarrocchi CC: vda@port.imtp.ilyichevsk.odessa.ua, conma@kolivas.net, riel@conectiva.com.br, linux-kernel@vger.kernel.org Subject: Re: Poor performance with 2.5.52, load and process in D state References: <20021226092641.12371.qmail@linuxmail.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 26 Dec 2002 09:35:00.0283 (UTC) FILETIME=[0F7628B0:01C2ACC2] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Paolo Ciarrocchi wrote: > > > it appears that this benefit came from the special usercopy code. > > What sort of CPU are you using? > > It is a PIII@800. hm, don't know. I built the latest postgres locally. Perhaps the alignment of some application buffer is different.