From owner-freebsd-net@FreeBSD.ORG Wed May 7 07:52:29 2014 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 22989B0D for ; Wed, 7 May 2014 07:52:29 +0000 (UTC) Received: from mail.tdx.com (mail.tdx.com [62.13.128.18]) by mx1.freebsd.org (Postfix) with ESMTP id A8DA8292 for ; Wed, 7 May 2014 07:52:28 +0000 (UTC) Received: from study64.tdx.co.uk (study64.tdx.co.uk [62.13.130.231]) (authenticated bits=0) by mail.tdx.com (8.14.3/8.14.3/) with ESMTP id s477qQ2b003764 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 7 May 2014 08:52:27 +0100 (BST) Date: Wed, 07 May 2014 08:52:27 +0100 From: Karl Pielorz To: net@freebsd.org Subject: NIC congestion - indicators? Message-ID: <6846364B6813CBB557D4D8D5@study64.tdx.co.uk> X-Mailer: Mulberry/4.0.8 (Mac OS X) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 May 2014 07:52:29 -0000 Hi, I've a couple of boxes which *might* be hitting the ceiling for their NIC's (i.e. using all the bandwidth on the link). Other than looking at 'systat -if' - is there anything in netstat's output (or anywhere else) that would indicate the system is either heavily queuing outgoing packets - or binning them off? Thanks, -Karl