From owner-freebsd-hackers@FreeBSD.ORG Wed Sep 17 17:35:27 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8BB2D16A4B3 for ; Wed, 17 Sep 2003 17:35:27 -0700 (PDT) Received: from venom.ai.net (venom.ai.net [205.134.161.156]) by mx1.FreeBSD.org (Postfix) with ESMTP id B72E343FE5 for ; Wed, 17 Sep 2003 17:35:26 -0700 (PDT) (envelope-from deepak@ai.net) Received: from blood (pool-68-163-66-91.res.east.verizon.net [68.163.66.91]) by venom.ai.net (8.12.6/8.12.8) with SMTP id h8I0Un3a046771 for ; Wed, 17 Sep 2003 20:30:49 -0400 (EDT) (envelope-from deepak@ai.net) From: "Deepak Jain" To: "freebsd-hackers@FreeBSD. ORG" Date: Wed, 17 Sep 2003 20:34:54 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Importance: Normal Subject: TCP information X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: deepak@ai.net List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Sep 2003 00:35:27 -0000 Is there a utility/hack/patch that would allow a diligent sysadmin to obtain which specific TCP connections are generating retransmits and receiving packet drops? netstat will show me drops on an interface, but not on a specific source/dest pair? I am guessing something like a netstat -n, but instead of showing send/rec queues it shows retransmit or packet drops? Would there be much interest in this feature if we were to build it ourselves? Thanks in advance, Deepak Jain AiNET