From owner-freebsd-questions@FreeBSD.ORG Wed Apr 15 18:49:30 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D0DA31065727 for ; Wed, 15 Apr 2009 18:49:30 +0000 (UTC) (envelope-from kes-kes@yandex.ru) Received: from forwards6.yandex.ru (forwards6.yandex.ru [77.88.61.38]) by mx1.freebsd.org (Postfix) with ESMTP id 80CFA8FC1A for ; Wed, 15 Apr 2009 18:49:30 +0000 (UTC) (envelope-from kes-kes@yandex.ru) Received: from smtp18.yandex.ru (smtp18.yandex.ru [77.88.61.54]) by forwards6.yandex.ru (Yandex) with ESMTP id EF7FDA8D1BB for ; Wed, 15 Apr 2009 22:49:28 +0400 (MSD) Received: from [193.41.172.38] ([193.41.172.38]:11458 "EHLO HOMEUSER" smtp-auth: "kes-kes" TLS-CIPHER: TLS-PEER-CN1: ) by mail.yandex.ru with ESMTP id S10436857AbZDOSt0 (ORCPT ); Wed, 15 Apr 2009 22:49:26 +0400 X-Yandex-TimeMark: 1239821366 X-Yandex-Spam: 1 X-Yandex-Front: smtp18 X-BornDate: 1149541200 X-Yandex-Karma: 0 X-Yandex-KarmaStatus: 0 X-MsgDayCount: 3 X-Comment: RFC 2476 MSA function at smtp18.yandex.ru logged sender identity as: kes-kes X-Nat-Received: from [192.168.9.80]:1918 [ident-empty] by SPAM FILTER: with TPROXY id 1239821421.35558 abuse-to kes-kes@yandex.ru Date: Wed, 15 Apr 2009 21:49:23 +0300 From: KES X-Mailer: The Bat! (v4.0.24) Professional Organization: SaftTen X-Priority: 3 (Normal) Message-ID: <96276837.20090415214923@yandex.ru> To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: 8bit Subject: IPFW, KERNEL, sysctl: has no effect changing DUMMYNET.io_fast X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: KES List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Apr 2009 18:49:31 -0000 Hi, Freebsd-questions. This change sysctl net.inet.ip.dummynet.io_fast=1 has no effect for packet flow, bug man says: Fast mode allows certain packets to bypass dummynet scheduler if packet flow does not exceed pipe's bandwidth flow does not exceed pipe limit, but packet flow latency is affected ipfw pipe 1 config bw 64kbit/s ipfw add 1 pipe 1 all from any to any No any trafic except ping: ping some.lan.machine with rules above ping is about 8ms, without them <1ms Does I understand corrent "Fast mode" when I ping I do flow less than 64Kbit/s so packet must bypass scheduler and must have latency <1ms? -- С уважением, KES mailto:kes-kes@yandex.ru