Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262430AbTE0BqF (ORCPT ); Mon, 26 May 2003 21:46:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262434AbTE0BqF (ORCPT ); Mon, 26 May 2003 21:46:05 -0400 Received: from pao-ex01.pao.digeo.com ([12.47.58.20]:40827 "EHLO pao-ex01.pao.digeo.com") by vger.kernel.org with ESMTP id S262430AbTE0BqE (ORCPT ); Mon, 26 May 2003 21:46:04 -0400 Date: Mon, 26 May 2003 18:59:20 -0700 From: Andrew Morton To: William Lee Irwin III Cc: davem@redhat.com, andrea@suse.de, davidsen@tmr.com, haveblue@us.ibm.com, habanero@us.ibm.com, mbligh@aracnet.com, linux-kernel@vger.kernel.org Subject: Re: userspace irq balancer Message-Id: <20030526185920.64e9751f.akpm@digeo.com> In-Reply-To: <20030527015307.GC8978@holomorphy.com> References: <20030527000639.GA3767@dualathlon.random> <20030526.171527.35691510.davem@redhat.com> <20030527004115.GD3767@dualathlon.random> <20030526.174841.116378513.davem@redhat.com> <20030527015307.GC8978@holomorphy.com> X-Mailer: Sylpheed version 0.9.0pre1 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 27 May 2003 01:59:17.0751 (UTC) FILETIME=[94D4E070:01C323F3] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 612 Lines: 16 William Lee Irwin III wrote: > > In > the userspace implementation the reprogramming is done infrequently > enough to make even significant cost negligible; in-kernel the cost > is entirely uncontrolled and the rate of reprogramming unlimited. eh? #define MAX_BALANCED_IRQ_INTERVAL (5*HZ) #define MIN_BALANCED_IRQ_INTERVAL (HZ/2) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/