From owner-freebsd-net@freebsd.org Sat Nov 7 10:45:43 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 74E5DA27B8D for ; Sat, 7 Nov 2015 10:45:43 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (heidi.turbocat.net [88.198.202.214]) (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 352F51DD1 for ; Sat, 7 Nov 2015 10:45:42 +0000 (UTC) (envelope-from hps@selasky.org) Received: from laptop015.home.selasky.org (unknown [62.141.129.119]) (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 C3B021FE023; Sat, 7 Nov 2015 11:45:33 +0100 (CET) Subject: Re: Timing issue with Dummynet on high kernel timer interrupt To: Bruce Evans , Rasool Al-Saadi References: <6545444AE21C2749939E637E56594CEA3C0DCCC4@gsp-ex02.ds.swin.edu.au> <5638B7B5.3030802@selasky.org> <6545444AE21C2749939E637E56594CEA3C0DE7FF@gsp-ex02.ds.swin.edu.au> <563B2703.5080402@selasky.org> <6545444AE21C2749939E637E56594CEA3C0E0BD9@gsp-ex02.ds.swin.edu.au> <563C6864.2090907@selasky.org> <563C786C.1050305@selasky.org> <563CC186.9000807@selasky.org> <6545444AE21C2749939E637E56594CEA3C0E1B79@gsp-ex02.ds.swin.edu.au> <20151107162915.A893@besplex.bde.org> Cc: Luigi Rizzo , "freebsd-net@freebsd.org" From: Hans Petter Selasky Message-ID: <563DD6B2.8010607@selasky.org> Date: Sat, 7 Nov 2015 11:47:14 +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: <20151107162915.A893@besplex.bde.org> 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: Sat, 07 Nov 2015 10:45:43 -0000 On 11/07/15 07:19, Bruce Evans wrote: > I don't know if CTLFLAG_RWTUN with SYSCTL_PROC() actually works for all > types, but it is used with CTLFLAG_STRING for kern.corefile. This is > another bogus undocumented tunable. It is better documented as a sysctl > than most since it is old so it is documented in sysctl(8). It is not > documented as a tunable there of course. It is also not documented as > a tunable in core(5). Hi, SYSCTL_PROC() works with RWTUN from /boot/loader.conf, as long as the procedure callback handles early calls during boot. --HPS