Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 12 Apr 2001 01:26:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 12 Apr 2001 01:26:21 -0400 Received: from mpdr0.chicago.il.ameritech.net ([206.141.239.142]:10704 "EHLO mailhost.chi.ameritech.net") by vger.kernel.org with ESMTP id ; Thu, 12 Apr 2001 01:26:13 -0400 Message-ID: <3AD53C66.92B8D6BE@ameritech.net> Date: Thu, 12 Apr 2001 00:25:58 -0500 From: watermodem X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.2-ac24 i686) X-Accept-Language: en MIME-Version: 1.0 To: "linux-kernel@vger.kernel.org" Subject: Re: No 100 HZ timer ! In-Reply-To: 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 Alan Cox wrote: > > > Timers more precise than 100HZ aren't probably needed - as MIN_RTO is 0.2s > > and MIN_DELACK is 0.04s, TCP would hardly benefit from them. > > There are a considerable number of people who really do need 1Khz resolution. > Midi is one of the example cases. That doesn't mean we have to go to a 1KHz > timer, we may want to combine a 100Hz timer with a smart switch to 1Khz As somebody who is now debating how to measure latencies in a giga-bit ethernet environment with several components doing L3 switching in much less than 10 micro-seconds ... (hardware) I agree that some method is need to achieve higher resolutions. (Sigh... I will likely need to buy something big and expensive) {this is for a system to make use of L. Yarrow's little protocol} - 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/