Re: More on bittorrent

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On 2/26/07, Aaron Konstam <akonstam@xxxxxxxxxxxxx> wrote:
On Mon, 2007-02-26 at 10:30 -0800, Kam Leo wrote:
> On 2/26/07, Aaron Konstam <akonstam@xxxxxxxxxxxxx> wrote:
> > >>
> > >>Aaron Konstam wrote:
> > >> I wanted to download the latest FC6 respin CDs. I went to the web
> > >> location and found the correct bittorrent and clicked to download it.
> > >> The bittorrent GUI opened and the download started. Now I was
> > connected
> > >> to a system with an Internet speed of 45 Mb/s but the GUI said the
> > >> download would take 15 hours. Well the respin has 5 CDs. I have a
> > >> downloaded a single 600+ Meg CD in less than an hour (actually I
> > think
> > >> it was much less). So I can't understand why the bittorrent download
> > >> should take 15 hours.
> > >>
> > >> I have done this before but it has been a long time ago. I must be
> > doing
> > >> something wrong but what? Any ideas?
> > >
> > >A couple of things to check - do you have a download speed limit
> > >set, so that it does not use the full bandwidth when downloading? Do
> > >you have your firewall properly configured so that you can seed as
> > >well as download? If not, this can limit your download speed. How
> > >many seeds are there, compared to the number of clients, and how
> > >many are you connected to?
> > My download speed was set too high. I have no firewall set on my machine
> > but the university does however they tell me that they do not restrict
> > bittorrents. I don't know how to check the number of seeds and /or
> > number of clients.
> >
> > So there are clearly holes in my knowledge. Can someone help fill in the
> > gaps.
> > >
> > >One other thing to keep in mind is that the time estimate when you
> > >first start downloading is usually high, and drops as you connect to
> > >more feeds. It also tends to change during the download. Depending
> > >on how the client calculates the time remaining, it may get less
> > >sensitive to rate changes as the download progresses - more data to
> > >average, so temporary fluctuations in download speed do not affect
> > >it as much.
> > The above is true but I waited 2 hours and not even 1 CD was downloaded.
> >
>
> Bittorrent works when there are a large number of seeders and peers.
> The problem with the Fedora respin is that after the initial
> availability announcement the number of seeders and peers drops to a
> very low number, less than 5 when I tried it. If each shares the
> minimum required upload speed, 4K bits/second, the total bandwidth is
> only 20K bits/second. Factor the low number of participants and the
> problem of finding peers with the fragments missing from your download
> and you get the current situation. Also I find that the tracker used
> by Fedora respin does not work well with my setup which is behind a
> firewall.
>
So am I conclude that >10 hours may be what it will take. How do oyu
find out how many seeders are active?
--

Use Azureus. It shows the number of seeders and peers connected to your swarm.

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