From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: Info: NAPI performance at "low" loads Date: Tue, 17 Sep 2002 17:54:42 -0400 Sender: netdev-bounce@oss.sgi.com Message-ID: <3D87A4A2.6050403@mandrakesoft.com> References: <3D879F59.6BDF9443@digeo.com> <20020917.142635.114214508.davem@redhat.com> <3D87A264.8D5F3AD2@digeo.com> <20020917.143947.07361352.davem@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: akpm@digeo.com, manfred@colorfullife.com, netdev@oss.sgi.com, linux-kernel@vger.kernel.org Return-path: To: "David S. Miller" Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org David S. Miller wrote: > Any driver should be able to get the NAPI overhead to max out at > 2 PIOs per packet. Just to pick nits... my example went from 2 or 3 IOs [depending on the presence/absence of a work loop] to 6 IOs. Feel free to re-read my message and point out where an IO can be eliminated... Jeff