Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261399AbUKXAJo (ORCPT ); Tue, 23 Nov 2004 19:09:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261622AbUKXAEl (ORCPT ); Tue, 23 Nov 2004 19:04:41 -0500 Received: from lucidpixels.com ([66.45.37.187]:9376 "HELO lucidpixels.com") by vger.kernel.org with SMTP id S261357AbUKWRnO (ORCPT ); Tue, 23 Nov 2004 12:43:14 -0500 Date: Tue, 23 Nov 2004 12:43:12 -0500 (EST) From: Justin Piszcz X-X-Sender: jpiszcz@p500 To: linux-kernel@vger.kernel.org Subject: CONFIG_TULIP_NAPI_HW_MITIGATION latency question. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 651 Lines: 19 "at the cost of a small latency" How much additional latency is added with this option enabled? 5ms? 10ms? -> Use Interrupt Mitigation x CONFIG_TULIP_NAPI_HW_MITIGATION: x Use HW to reduce RX interrupts. Not strict necessary since NAPI reduces RX interrupts but itself. Although this reduces RX interrupts even at low levels traffic at the cost of a small latency. x x If in doubt, say Y. x - 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/