> Date: Thu, 26 Jan 2012 16:39:34 +0000 > From: Steven Murdoch <Steven.Murdoch@xxxxxxxxxxxx> > To: tor-dev@xxxxxxxxxxxxxxxxxxxx > Subject: Re: [tor-dev] Simulating a slow connection > Message-ID: <CAE309A8-034E-4E6A-B05C-6B9B3EA1CDBE@xxxxxxxxxxxx> > Content-Type: text/plain; charset=us-ascii > > Hi Adam, > > On 20 Jan 2012, at 10:55, Adam Katz wrote: > >> Well, I myself didn't have anything specific in mind but i have some >> experience with the linux tc utility as well as with generating >> realistic background traffic. I was wondering whether I could help on >> any of the existing projects or help establish a new one. > > I think Nick's comments summarized the current state of thinking. ExperimenTor and Shadow are the best Tor simulators to use for this project. The big missing pieces are: > - an automated framework for setting up experiments with slow Internet connections with ExperimenTor and Shadow, then collecting and summarizing results > - Tools for generating realistic link characteristics (delay and packet dropping), and for collecting data on the link properties found in particular locations > > Steven. > As Steven stated, this would be very easy to explore with Shadow. The network topology is passed in as an XML file: node properties include bandwidth up/down and link properties include latency, jitter, and packetloss. I already have some python scripts to generate topologies, and would be happy to share them once you have realistic measurements/values for the slow links you'd like to explore. I'd also be happy to explain more about how Shadow works or the structure of the XML file. Rob
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