Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264457AbTK0Ipg (ORCPT ); Thu, 27 Nov 2003 03:45:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264459AbTK0Ipg (ORCPT ); Thu, 27 Nov 2003 03:45:36 -0500 Received: from siaar1aa.compuserve.com ([149.174.40.9]:32464 "EHLO siaar1aa.compuserve.com") by vger.kernel.org with ESMTP id S264457AbTK0Ipc (ORCPT ); Thu, 27 Nov 2003 03:45:32 -0500 Message-ID: <3FC5BA42.9090707@aol.com> Date: Thu, 27 Nov 2003 09:48:02 +0100 From: Kai Bankett User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jamie Lokier CC: Kai Bankett , linux-kernel@vger.kernel.org Subject: Re: [PATCH] irq_balance does not make sense with HT but single physical CPU References: <3FC4B5C8.6020405@aol.com> <20031126184031.GC14383@mail.shareable.org> In-Reply-To: <20031126184031.GC14383@mail.shareable.org> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms050905050405060201080706" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5790 Lines: 100 This is a cryptographically signed message in MIME format. --------------ms050905050405060201080706 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit > > If you had two tasks both running continuously, one per sibling, then > not IRQ balancing will penalise the task on the sibling which is > getting most interrupts. > Yes - did some more reading on HT and how the cpu looks like in that case ... I was thinking that interrupt lines - while in HT mode - aren?t available independently to both "parts" of the cpu. That was my fault - of course. So just dismiss the patch - sorry. 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