Anne Wilson wrote:
On Sunday 09 Oct 2005 09:08, Kaj Haulrich wrote:
Can you translate, for me? What do these statistics mean?
Seeding Rank 1st Priority 5785
Seeds 0(6)
Peers 76(14)
Share Ratio 0.103
Anne
Just I guess (from watching Azureus do it's thing) :
Seeding rank 1.st Priority : Your upload is primarily directed
to peer 5785. That one is probably near 100% done, so he/she
will soon be able to seed he whole kaboodle, speeding the
overall process further.
I don't think this is correct. The seeding rank is how high up its
priority list Azureus rates this torrent for seeding. It's configured to
only allow a limited number of torrents to be downloaded from you
simultaneously & so it calculates which torrents are most needy based on
the number of other seeds, number of peers etc. The most desperate
torrents get seeded, the less desperate ones get queued.
OK. Then the "1st priority" thing is a special flag that can be set
against the torrent to artificially raise it to the top of the list.
It's usually used to make sure that a torrent which has just completed
is always seeded for a while & doesn't go to the back of the queue.
There are settings in Azureus to fine tune the criteria for this in
Options->Queue->Seeding->First Priority. In my copy I've got it set to
mark the torrent as 1st priority for 14 hours after the download
completes or until I've seeded to a ratio of 0.5 (not ideal I know, but
I tend to micromanage my torrents far more than I should, so this is
just a guideline for Azureus to get started on).
The 5785 number I'm not totally sure about. I AM sure that it can't be a
peer ID because Anne was only seeing 76 peers. I'd guess that it's a
priority code computed from the seed/peer data on the torrent so that
Azureus can prioritise the torrents correctly - i.e. it's the number
that sets the order for the seeding queue. I have a numeric seeding rank
shown on a lot of my torrents. A couple of examples:
Seeds=1,Peers=1: rank 1005
S2,P2: rank 1010
S1,P5: rank 8025
S4,P1: rank 255
seems to back up my theory.
As an aside, remember that BitTorrent peers are also seeding the
portions of the torrent that they've got, even before they've finished
downloading. So concentrating your upload on someone that's almost
complete isn't necessarily going to speed up the swarm (the total
collection of people up & downloading this file through this tracker)
much. In fact it might even slow things down cos a lot of unfriendly
people will disconnect as soon as they complete. There's a case for
keeping everybody at 99% for a while *LOL*
If you want to blow your mind at the cleverness of BitTorrent, read up
about super seeding mode. Super seeding sends different parts of the
file to each of the peers, minimising duplication, and they can then
download them from each other rather than the seeder. A clever technique
for increasing the speed at which the first seeder can get an entire
copy of the torrent out into the swarm.
Seeds : present number of peers you are feeding.
Peers : Number of peers connected to you.
I can't make any sense of this. Why two numbers for each?
The seeds number is the number of people in the swarm who have a
complete copy of this file. Once you've downloaded and you're seeding
then this number will be at least one (cos that's you!).
The peers number is the number of people with an incomplete copy of the
torrent.
The first number for each pair is the number of seeds or peers that
you're connected to for this torrent. Once you've completed your
download this number in the seeds column should be zero (cos you don't
need to talk to the seeds any more - neither of you has anything that
the other one wants).
The second number is the number of seeds or peers in the entire swarm.
It's odd that Anne's connected to more peers than the tracker knows
about. This may be due to the distributed database stuff in the latest
version of BitTorrent. This allows peers to find out about other peers
from peers themselves rather than having to be told about them directly
from the tracker. This is excellent when you've got a heavily overloaded
tracker as you can continue to get updates even when you can't connect
to the tracker.
Jon
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