From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: RFC: issues concerning the next NAPI interface Date: Fri, 24 Aug 2007 14:44:36 -0700 (PDT) Message-ID: <20070824.144436.59664160.davem@davemloft.net> References: <20070824085203.42f4305c@freepuppy.rosehill.hemminger.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: shemminger@linux-foundation.org, akepner@sgi.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, meder@de.ibm.com, netdev@vger.kernel.org, netdev-owner@vger.kernel.org, ossthema@de.ibm.com, raisch@de.ibm.com, stefan.roscher@de.ibm.com, themann@de.ibm.com, tklein@de.ibm.com To: dlstevens@us.ibm.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:40831 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1757261AbXHXVok (ORCPT ); Fri, 24 Aug 2007 17:44:40 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: David Stevens Date: Fri, 24 Aug 2007 09:50:58 -0700 > Problem is if it increases rapidly, you may drop packets > before you notice that the ring is full in the current estimated > interval. This is one of many reasons why hardware interrupt mitigation is really needed for this.