From owner-freebsd-stable@FreeBSD.ORG Thu Nov 29 18:58:29 2007 Return-Path: Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5E1D316A418 for ; Thu, 29 Nov 2007 18:58:29 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id B8D2913C458; Thu, 29 Nov 2007 18:58:28 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <474F0BDF.8070605@FreeBSD.org> Date: Thu, 29 Nov 2007 19:58:39 +0100 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.9 (Macintosh/20071031) MIME-Version: 1.0 To: Pete French References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Also seeing 2 x quad-core system slower that 2 x dual core X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Nov 2007 18:58:29 -0000 Pete French wrote: > I think I also just came up against the same effect that the original poster > saw. I have two sets of machines here - one is a pair of dual core Xeons, > the other a pair of quad core Xeons. They are HP servers, more or less > identical apart from the processors I belive. > > Both have 7.0-BETA3 installed, and the same config on them with the > same files. I am trying to delete a gigabyte of files using 'rm -rf' > > On the dual core processors this takes about 20 seconds. On the quad > cores it takes about 3 minutes! This is true for both the 32 and 64 bit > versions of FreeBSD :-( That almost certainly has nothing to do with how many CPUs your system has, since rm -rf is a single process running on a single core. Kris