From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: RFC: issues concerning the next NAPI interface Date: Mon, 27 Aug 2007 14:56:00 -0700 (PDT) Message-ID: <20070827.145600.102570576.davem@davemloft.net> References: <46D2F301.7050105@katalix.com> <20070827.140251.95055210.davem@davemloft.net> <46D34517.4010505@katalix.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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 To: jchapman@katalix.com Return-path: In-Reply-To: <46D34517.4010505@katalix.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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?