Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264272AbTF0NHc (ORCPT ); Fri, 27 Jun 2003 09:07:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264265AbTF0NHc (ORCPT ); Fri, 27 Jun 2003 09:07:32 -0400 Received: from robur.slu.se ([130.238.98.12]:4874 "EHLO robur.slu.se") by vger.kernel.org with ESMTP id S264262AbTF0NHb (ORCPT ); Fri, 27 Jun 2003 09:07:31 -0400 From: Robert Olsson MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16124.17582.796111.577015@robur.slu.se> Date: Fri, 27 Jun 2003 15:20:46 +0200 To: "adamski" Cc: "Robert Olsson" , , Subject: RE: How to do kernel packet forwarding performance analysys - please comment on my method In-Reply-To: References: <16124.11592.136156.61126@robur.slu.se> X-Mailer: VM 6.92 under Emacs 19.34.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 890 Lines: 22 adamski writes: > i would like to start two flows through linux router: PHB EF and BE PHB.. > like voip and ftp or so... > > than i want to analyse what exactly happens ... since my theoretical > analysys show delays (or latencies - from packet entering the NIC to going > out of the outgoing interface) of hundereds of usec (~200us) while > experiments shows 5-10ms !!!!! with CBQ (configured like CBWFQ and LLQ) Seems you have to add your own hooks for this and I guess you've seen CONFIG_NET_PROFILE which does accurate measurements for network related operations. It was long time since I used though... Cheers. --ro - 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/