Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750797AbVJFKcP (ORCPT ); Thu, 6 Oct 2005 06:32:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750796AbVJFKcP (ORCPT ); Thu, 6 Oct 2005 06:32:15 -0400 Received: from cantor2.suse.de ([195.135.220.15]:61356 "EHLO mx2.suse.de") by vger.kernel.org with ESMTP id S1750794AbVJFKcO (ORCPT ); Thu, 6 Oct 2005 06:32:14 -0400 To: "Chen, Kenneth W" Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: kernel performance update - 2.6.14-rc3 References: <200510052115.j95LFgg07836@unix-os.sc.intel.com> From: Andi Kleen Date: 06 Oct 2005 12:32:11 +0200 In-Reply-To: <200510052115.j95LFgg07836@unix-os.sc.intel.com> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 709 Lines: 13 "Chen, Kenneth W" writes: > Even though > softirq is invoked at the end of dev_queue_xmit() via local_bh_enable(), > not all execution of softirq will result a __wake_up(). With higher > HZ rate, timer interrupt is more frequent and thus more softirq > invocation and leads to more __wake_up(), which then takes us to higher > throughput because cpu spend less time in idle. This sounds like a serious bug somewhere if true. -Andi - 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/