From owner-freebsd-questions@FreeBSD.ORG Wed Jan 11 19:32:17 2012 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 7B5461065673 for ; Wed, 11 Jan 2012 19:32:17 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from email2.allantgroup.com (email2.emsphone.com [199.67.51.116]) by mx1.freebsd.org (Postfix) with ESMTP id 3E7628FC0C for ; Wed, 11 Jan 2012 19:32:17 +0000 (UTC) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by email2.allantgroup.com (8.14.4/8.14.4) with ESMTP id q0BJWCb7012115 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 11 Jan 2012 13:32:13 -0600 (CST) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (smmsp@localhost [127.0.0.1]) by dan.emsphone.com (8.14.5/8.14.5) with ESMTP id q0BJWCVH056510 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 11 Jan 2012 13:32:12 -0600 (CST) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.14.5/8.14.5/Submit) id q0BJWA1E056509; Wed, 11 Jan 2012 13:32:10 -0600 (CST) (envelope-from dan) Date: Wed, 11 Jan 2012 13:32:10 -0600 From: Dan Nelson To: Ott =?utf-8?Q?K=C3=B6stner?= Message-ID: <20120111193210.GF91606@dan.emsphone.com> References: <20120111112400.Horde.g4QFfgcXel9PDXFQSwJwfrA@webmail.geofront.co.uk> <4F0D7B87.9060808@zzz.ee> <4F0DA344.9030504@infracaninophile.co.uk> <4F0DDB79.2010907@zzz.ee> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4F0DDB79.2010907@zzz.ee> X-OS: FreeBSD 8.2-STABLE User-Agent: Mutt/1.5.21 (2010-09-15) X-Virus-Scanned: clamav-milter 0.97.2 at email2.allantgroup.com X-Virus-Status: Clean X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.6 (email2.allantgroup.com [199.67.51.78]); Wed, 11 Jan 2012 13:32:13 -0600 (CST) X-Scanned-By: MIMEDefang 2.68 on 199.67.51.78 Cc: freebsd-questions@freebsd.org Subject: Re: Network throughput X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Jan 2012 19:32:17 -0000 In the last episode (Jan 11), Ott Köstner said: > On 11.01.2012 16:57, Matthew Seaman wrote: > > Yes -- mrtg is nice, but it relies on the snmp interface counters, and > > in this case with Gb traffic levels a 32bit counter will wrap in a few > > minutes. mrtg samples the interface counter every 5 minutes IIRC, so > > would probably be confused by that wrap-around happening at around the > > same frequency. Unless you switch to using 64bit interface counters, > > but I don't know if mrtg can cope with integer types that wide... > > Cheers, Matthew > > Yes, I have seen that wrapping with few hundred megabit port traffic. New > snmp port has 64 bit counter option. Personally, I have already built a > new snmp with 64 bit counter option, but not yet tested if it works. > Maybe somebody here can comment? Definitely works. You will have to tell mrtg to make SNMPv2 requests for the 64-bit OIDs to appear, but that's it. -- Dan Nelson dnelson@allantgroup.com