From owner-freebsd-net@FreeBSD.ORG Sat Oct 17 08:14:46 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3A1D41065670 for ; Sat, 17 Oct 2009 08:14:46 +0000 (UTC) (envelope-from julian@elischer.org) Received: from outS.internet-mail-service.net (outs.internet-mail-service.net [216.240.47.242]) by mx1.freebsd.org (Postfix) with ESMTP id 230F78FC0C for ; Sat, 17 Oct 2009 08:14:45 +0000 (UTC) Received: from idiom.com (mx0.idiom.com [216.240.32.160]) by out.internet-mail-service.net (Postfix) with ESMTP id 43FFDCBC50; Sat, 17 Oct 2009 01:14:45 -0700 (PDT) X-Client-Authorized: MaGic Cook1e X-Client-Authorized: MaGic Cook1e X-Client-Authorized: MaGic Cook1e Received: from julian-mac.elischer.org (unknown [67.100.89.137]) by idiom.com (Postfix) with ESMTP id CDD892D601C; Sat, 17 Oct 2009 01:14:44 -0700 (PDT) Message-ID: <4AD97CF7.6020602@elischer.org> Date: Sat, 17 Oct 2009 01:14:47 -0700 From: Julian Elischer User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) MIME-Version: 1.0 To: rihad References: <4AD6D99E.10805@mail.ru> <4AD95493.40200@mail.ru> <4AD96422.1040008@mail.ru> In-Reply-To: <4AD96422.1040008@mail.ru> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org, Robert Watson Subject: Re: dummynet dropping too many packets X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 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, 17 Oct 2009 08:14:46 -0000 rihad wrote: >> > The change definitely helped! There are now more than 3200 users online, > 460-500 mbps net traffic load, and normally 10-60 (up to 150 once or > twice) consistent drops per second as opposed to several hundred up to > 1000-1500 packets dropped per second before the rebuild. What's > interesting is that the drops now began only after the ipfw table had > around 3000 entries, not 2000 like before, so the change definitely > helped. Just how high can maxlen be? Should I try 2048? 4096? is Hz still 4000?