Delivery-Date: Mon, 13 Oct 2014 08:45:31 -0400
Return-Path: <tor-talk-bounces@lists.torproject.org>
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on moria.seul.org
X-Spam-Level: 
X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED,
	RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=ham version=3.3.1
X-Original-To: archiver@seul.org
Delivered-To: archiver@seul.org
Received: from eugeni.torproject.org (eugeni.torproject.org [38.229.72.13])
	(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by khazad-dum.seul.org (Postfix) with ESMTPS id 7E2FF1E0A97;
	Mon, 13 Oct 2014 08:45:29 -0400 (EDT)
Received: from eugeni.torproject.org (localhost [127.0.0.1])
	by eugeni.torproject.org (Postfix) with ESMTP id 9C5CE3139C;
	Mon, 13 Oct 2014 12:45:25 +0000 (UTC)
Received: from localhost (localhost [127.0.0.1])
 by eugeni.torproject.org (Postfix) with ESMTP id 7D56131303
 for <tor-talk@lists.torproject.org>; Mon, 13 Oct 2014 12:45:21 +0000 (UTC)
X-Virus-Scanned: Debian amavisd-new at eugeni.torproject.org
Received: from eugeni.torproject.org ([127.0.0.1])
 by localhost (eugeni.torproject.org [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id rF4OkM3yNNs7 for <tor-talk@lists.torproject.org>;
 Mon, 13 Oct 2014 12:45:21 +0000 (UTC)
Received: from mx1.riseup.net (mx1.riseup.net [198.252.153.129])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "*.riseup.net", Issuer "Gandi Standard SSL CA" (not verified))
 by eugeni.torproject.org (Postfix) with ESMTPS id 5668331202
 for <tor-talk@lists.torproject.org>; Mon, 13 Oct 2014 12:45:21 +0000 (UTC)
Received: from berryeater.riseup.net (berryeater-pn.riseup.net [10.0.1.120])
 (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits))
 (Client CN "*.riseup.net", Issuer "Gandi Standard SSL CA" (not verified))
 by mx1.riseup.net (Postfix) with ESMTPS id EC3E850D8D
 for <tor-talk@lists.torproject.org>; Mon, 13 Oct 2014 05:45:17 -0700 (PDT)
Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: phw)
 with ESMTPSA id 4D54842895
Date: Mon, 13 Oct 2014 14:45:14 +0200
From: Philipp Winter <phw@nymity.ch>
To: tor-talk@lists.torproject.org
Message-ID: <20141013124514.GC29119@nymity.ch>
Mail-Followup-To: tor-talk@lists.torproject.org
References: <54346FEA.3030307@eff.org>
MIME-Version: 1.0
Content-Disposition: inline
In-Reply-To: <54346FEA.3030307@eff.org>
X-PGP-Fpr: B369 E7A2 18FE CEAD EB96  8C73 CF70 89E3 D7FD C0D0
User-Agent: Mutt/1.5.21 (2010-09-15)
X-Virus-Scanned: clamav-milter 0.98.4 at mx1
X-Virus-Status: Clean
Subject: Re: [tor-talk] Double-checking a couple questions about node churn
 rate
X-BeenThere: tor-talk@lists.torproject.org
X-Mailman-Version: 2.1.15
Precedence: list
Reply-To: tor-talk@lists.torproject.org
List-Id: "all discussion about theory, design,
 and development of Onion Routing" <tor-talk.lists.torproject.org>
List-Unsubscribe: <https://lists.torproject.org/cgi-bin/mailman/options/tor-talk>, 
 <mailto:tor-talk-request@lists.torproject.org?subject=unsubscribe>
List-Archive: <http://lists.torproject.org/pipermail/tor-talk/>
List-Post: <mailto:tor-talk@lists.torproject.org>
List-Help: <mailto:tor-talk-request@lists.torproject.org?subject=help>
List-Subscribe: <https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk>, 
 <mailto:tor-talk-request@lists.torproject.org?subject=subscribe>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: tor-talk-bounces@lists.torproject.org
Sender: "tor-talk" <tor-talk-bounces@lists.torproject.org>

On Tue, Oct 07, 2014 at 03:57:46PM -0700, Jeremy Gillula wrote:
> 1. Does anyone have an idea of what the usual churn rate is for Tor
> nodes? (I'm guessing fairly low for most nodes, but if anyone has even
> rough numbers, that would help...)

I'm late to the party but the following might also be helpful:
<https://www.petsymposium.org/2014/papers/Winter.pdf> Section 5.7.
<http://www.cs.unm.edu/~royaen/gfw/techreport.pdf> Section IV.A.
<https://trac.torproject.org/projects/tor/ticket/12813>

Interestingly, there is a non-trivial number of relays (identified by
fingerprint) which can only be seen in one consensus, i.e., they are
only part of the network for one hour.

Cheers,
Philipp
-- 
tor-talk mailing list - tor-talk@lists.torproject.org
To unsubscribe or change other settings go to
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk

