From owner-freebsd-net@FreeBSD.ORG Thu Jan 18 13:58:50 2007 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F187916A407; Thu, 18 Jan 2007 13:58:50 +0000 (UTC) (envelope-from rrs@cisco.com) Received: from sj-iport-4.cisco.com (sj-iport-4.cisco.com [171.68.10.86]) by mx1.freebsd.org (Postfix) with ESMTP id 8CC0D13C46A; Thu, 18 Jan 2007 13:58:50 +0000 (UTC) (envelope-from rrs@cisco.com) Received: from sj-dkim-2.cisco.com ([171.71.179.186]) by sj-iport-4.cisco.com with ESMTP; 18 Jan 2007 05:58:50 -0800 Received: from sj-core-1.cisco.com (sj-core-1.cisco.com [171.71.177.237]) by sj-dkim-2.cisco.com (8.12.11/8.12.11) with ESMTP id l0IDwo3n000430; Thu, 18 Jan 2007 05:58:50 -0800 Received: from xbh-sjc-211.amer.cisco.com (xbh-sjc-211.cisco.com [171.70.151.144]) by sj-core-1.cisco.com (8.12.10/8.12.6) with ESMTP id l0IDwnDk012461; Thu, 18 Jan 2007 05:58:50 -0800 (PST) Received: from xfe-sjc-212.amer.cisco.com ([171.70.151.187]) by xbh-sjc-211.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.1830); Thu, 18 Jan 2007 05:58:48 -0800 Received: from [127.0.0.1] ([171.68.225.134]) by xfe-sjc-212.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.1830); Thu, 18 Jan 2007 05:58:48 -0800 Message-ID: <45AF7CF8.6030102@cisco.com> Date: Thu, 18 Jan 2007 08:58:16 -0500 From: Randall Stewart User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.8) Gecko/20061029 FreeBSD/i386 SeaMonkey/1.0.6 MIME-Version: 1.0 To: Christian Brueffer References: <45AF55DE.1070700@cisco.com> <45AF7962.7040407@cisco.com> <20070118135319.GB1874@haakonia.hitnet.RWTH-Aachen.DE> In-Reply-To: <20070118135319.GB1874@haakonia.hitnet.RWTH-Aachen.DE> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 18 Jan 2007 13:58:48.0537 (UTC) FILETIME=[C6DB0C90:01C73B08] DKIM-Signature: v=0.5; a=rsa-sha256; q=dns/txt; l=1231; t=1169128730; x=1169992730; c=relaxed/simple; s=sjdkim2002; h=Content-Type:From:Subject:Content-Transfer-Encoding:MIME-Version; d=cisco.com; i=rrs@cisco.com; z=From:=20Randall=20Stewart=20 |Subject:=20Re=3A=20mbuf=20large=20clusters |Sender:=20; bh=e90fmwk0rH7JjJ/42DFwH1oatvheZc3AoX1Ceeid8S0=; b=itfmRyWwznj3vBWF5mqUXCq1thyBQ0RI//PmqytMC8TeXauCG/fY9Urv0Br6WiIzO731uY1m JUlZ19cJx0LWDhaHmwSWVOBftItziPLICC5/gB+JCer3SRvy/M1O2P06; Authentication-Results: sj-dkim-2; header.From=rrs@cisco.com; dkim=pass (sig from cisco.com/sjdkim2002 verified; ); Cc: freebsd-net Subject: Re: mbuf large clusters 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: Thu, 18 Jan 2007 13:58:51 -0000 Christian Brueffer wrote: > > Not sure if I'm understanding you correctly, but kern.ipc.nmbclusters is > a tunable not a sysctl, so it has to be set in /boot/loader.conf or at > the loader prompt (see loader(8)). > Not in current from what I see (if I understand this correctly of course): ----------------------------------------------------- static int sysctl_nmbclusters(SYSCTL_HANDLER_ARGS) { int error, newnmbclusters; newnmbclusters = nmbclusters; error = sysctl_handle_int(oidp, &newnmbclusters, sizeof(int), req); if (error == 0 && req->newptr) { if (newnmbclusters > nmbclusters) { nmbclusters = newnmbclusters; uma_zone_set_max(zone_clust, nmbclusters); EVENTHANDLER_INVOKE(nmbclusters_change); } else error = EINVAL; } return (error); } SYSCTL_PROC(_kern_ipc, OID_AUTO, nmbclusters, CTLTYPE_INT|CTLFLAG_RW, &nmbclusters, 0, sysctl_nmbclusters, "IU", "Maximum number of mbuf clusters allowed"); ----------------------------------------------------- It looks to me like it lets you INCREASE the value from the calculated system value.. but NOT shrink it :-0 R -- Randall Stewart NSSTG - Cisco Systems Inc. 803-345-0369 803-317-4952 (cell)