Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965450AbXH0V5x (ORCPT ); Mon, 27 Aug 2007 17:57:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764313AbXH0V4F (ORCPT ); Mon, 27 Aug 2007 17:56:05 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:46383 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756062AbXH0V4D (ORCPT ); Mon, 27 Aug 2007 17:56:03 -0400 Date: Mon, 27 Aug 2007 14:56:00 -0700 (PDT) Message-Id: <20070827.145600.102570576.davem@davemloft.net> To: jchapman@katalix.com Cc: shemminger@linux-foundation.org, ossthema@de.ibm.com, akepner@sgi.com, netdev@vger.kernel.org, raisch@de.ibm.com, themann@de.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, meder@de.ibm.com, tklein@de.ibm.com, stefan.roscher@de.ibm.com Subject: Re: RFC: issues concerning the next NAPI interface From: David Miller In-Reply-To: <46D34517.4010505@katalix.com> References: <46D2F301.7050105@katalix.com> <20070827.140251.95055210.davem@davemloft.net> <46D34517.4010505@katalix.com> X-Mailer: Mew version 5.1.52 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 888 Lines: 22 From: James Chapman Date: Mon, 27 Aug 2007 22:41:43 +0100 > I don't recall saying anything in previous posts about this. Are you > confusing my posts with Jan-Bernd's? Yes, my bad. > Jan-Bernd has been talking about using hrtimers to _reschedule_ > NAPI. My posts are suggesting an alternative mechanism that keeps > NAPI active (with interrupts disabled) for a jiffy or two after it > would otherwise have gone idle in order to avoid too many interrupts > when the packet rate is such that NAPI thrashes between poll-on and > poll-off. So in this scheme what runs ->poll() to process incoming packets? The hrtimer? - 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/