From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753847AbYIBREw (ORCPT ); Tue, 2 Sep 2008 13:04:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751578AbYIBREk (ORCPT ); Tue, 2 Sep 2008 13:04:40 -0400 Received: from g4t0017.houston.hp.com ([15.201.24.20]:11914 "EHLO g4t0017.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751568AbYIBREj (ORCPT ); Tue, 2 Sep 2008 13:04:39 -0400 Message-ID: <48BD721E.4060401@hp.com> Date: Tue, 02 Sep 2008 10:04:30 -0700 From: Rick Jones User-Agent: Mozilla/5.0 (X11; U; HP-UX 9000/785; en-US; rv:1.7.13) Gecko/20060601 X-Accept-Language: en-us, en MIME-Version: 1.0 To: David Miller CC: Valdis.Kletnieks@vt.edu, jmalicki@metacarta.com, andi@firstfloor.org, johnpol@2ka.mipt.ru, dada1@cosmosbay.com, denys@visp.net.lb, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, juhlenko@akamai.com, sammy@sammy.net Subject: Re: loaded router, excessive getnstimeofday in oprofile References: <21915755.1327801219904892242.JavaMail.root@ouachita> <48B6E7D0.5070307@hp.com> <20031.1220236756@turing-police.cc.vt.edu> <20080831.205145.225080276.davem@davemloft.net> In-Reply-To: <20080831.205145.225080276.davem@davemloft.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I don't think anyone in this thread can even pretend to understand how > any of this stuff works So so last week I started asking FSI contacts I've built-up while answering their "how to improve latency" questions. The intent is to get some direct input from them on just what their and their regulator's expecations are wrt timestamping of packets and/or trades. rick jones