From owner-freebsd-net@FreeBSD.ORG Fri Oct 19 01:17:18 2007 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 8A82A16A41B for ; Fri, 19 Oct 2007 01:17:18 +0000 (UTC) (envelope-from maksim.yevmenkin@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.185]) by mx1.freebsd.org (Postfix) with ESMTP id 1E3C113C467 for ; Fri, 19 Oct 2007 01:17:16 +0000 (UTC) (envelope-from maksim.yevmenkin@gmail.com) Received: by nf-out-0910.google.com with SMTP id b2so304792nfb for ; Thu, 18 Oct 2007 18:17:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=hK9o4q8ydMFD0kw0QRtwlsgA0PH7iJZJxPUwwN1m0Qk=; b=Vnprksinoq65QFa2KKoIgU3FD5F09Mz+AJ5Bv6zqYPMrqMwZ6cU3ESHozwKlIJcHibWv87DbeoxOWVaVAcHugZekTyWUTe1kOwvfXlC6z2sO/fvIkDZF0xEDy5JWvMjruLaATcvcE0Qd8lu+sM1NdFyOUxPRNIxj6pQJN1Bxllk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=klM+lD+unHWB8s3p9XMZ8bLtOMnO9dodlEtwFrxX9nSmXZzk64a7DkYon/bkS7zL1OB3Tqk6moTcM7HxriTAJUPo46kbXkmEyn5ti7kWGmC7Xqxr+sEeJ5lr5EDWdERpA0keX/sVa94hDcKbFiqvnOKcUnPaOBrc70R/9QYN4Nk= Received: by 10.86.51.2 with SMTP id y2mr895616fgy.1192755134161; Thu, 18 Oct 2007 17:52:14 -0700 (PDT) Received: by 10.86.25.9 with HTTP; Thu, 18 Oct 2007 17:52:14 -0700 (PDT) Message-ID: Date: Thu, 18 Oct 2007 17:52:14 -0700 From: "Maksim Yevmenkin" To: "Julian Elischer" In-Reply-To: <4717FDF1.4030909@elischer.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <4717FDF1.4030909@elischer.org> Cc: FreeBSD Net Subject: Re: tcp analysis tool? 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: Fri, 19 Oct 2007 01:17:18 -0000 On 10/18/07, Julian Elischer wrote: > does anyone have a favourite tool for analysing tcp flows to easily figure out why a transfer is slow? > > I am hoping for something that can help visualise the flow as one of those > "two timeline poles with lines between them" diagrams.. > > (that doesn't require too much extra software to be loaded. i used tcptrace at one point. http://jarok.cs.ohiou.edu/software/tcptrace/ works on dumps produced by tcpdump and can do some plots and provides some statistical data. thanks, max