From owner-freebsd-net@freebsd.org Tue Nov 3 13:31:58 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D7247A2464E for ; Tue, 3 Nov 2015 13:31:58 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (mail.turbocat.net [IPv6:2a01:4f8:d16:4514::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 98E791C99 for ; Tue, 3 Nov 2015 13:31:58 +0000 (UTC) (envelope-from hps@selasky.org) Received: from laptop015.home.selasky.org (cm-176.74.213.204.customer.telag.net [176.74.213.204]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 38BA11FE023; Tue, 3 Nov 2015 14:31:54 +0100 (CET) Subject: Re: Timing issue with Dummynet on high kernel timer interrupt To: Rasool Al-Saadi , "freebsd-net@freebsd.org" References: <6545444AE21C2749939E637E56594CEA3C0DCCC4@gsp-ex02.ds.swin.edu.au> From: Hans Petter Selasky Message-ID: <5638B7B5.3030802@selasky.org> Date: Tue, 3 Nov 2015 14:33:41 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <6545444AE21C2749939E637E56594CEA3C0DCCC4@gsp-ex02.ds.swin.edu.au> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Nov 2015 13:31:58 -0000 On 11/03/15 14:14, Rasool Al-Saadi wrote: > Does anyone have thoughts on what we can test next to narrow down the root-cause of these unusual timing jumps? You might also want to test the "projects/hps_head" branch, which uses a bit different callout implementation. --HPS