Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 12 Mar 2002 01:08:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 12 Mar 2002 01:08:02 -0500 Received: from pizda.ninka.net ([216.101.162.242]:1735 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Tue, 12 Mar 2002 01:07:55 -0500 Date: Mon, 11 Mar 2002 22:04:25 -0800 (PST) Message-Id: <20020311.220425.51167805.davem@redhat.com> To: rgooch@ras.ucalgary.ca Cc: bcrl@redhat.com, whitney@math.berkeley.edu, linux-kernel@vger.kernel.org Subject: Re: Broadcom 5700/5701 Gigabit Ethernet Adapters From: "David S. Miller" In-Reply-To: <200203111948.g2BJmhs13326@vindaloo.ras.ucalgary.ca> In-Reply-To: <20020310212210.A27870@redhat.com> <20020310.183033.67792009.davem@redhat.com> <200203111948.g2BJmhs13326@vindaloo.ras.ucalgary.ca> X-Mailer: Mew version 2.1 on Emacs 21.1 / 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 From: Richard Gooch Date: Mon, 11 Mar 2002 12:48:43 -0700 David S. Miller writes: > NAPI is really only going to help with high packet rates not with > thinks like raw bandwidth tests. You're saying that people should just go and use jumbo frames? Isn't that a problem for mixed 10/100/1000 LANs? No, I'm saying that the current situation is fine with most cards and most uses. Ben pointed out that interrupt-mitigation challenged cards like the NatSemi do gain, but that is the only case I can imagine at this time. Unless you have a card like the NatSemi (no interrupt mitigation) or your interfaces are being hit with 120,000 packets per second EACH, then NAPI is not going to be an explosive gain for you. Look, we were able to get world records in web serving without NAPI, right? :-) - 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/