[BitTorrent] Upload limit

Olaf van der Spek OvdSpek at LIACS.NL
Wed Jul 14 14:50:23 EDT 2004


Richard Reich wrote:

> No kidding.  I have played with this a lot and there is no doubt it's
> true.  But why?  I understand about up-traffic stifling down-traffic
> ACK packets, but I have traffic-shaped ACK packets to the front of
> the line, and nothing happens (in fact I think it makes the problem
> worse, but I'm not certain of this).
> 
> Can someone explain to me what's going on here.  Simply restating that
> "downloading chokes uploading" is not the answer I'm looking for.  I
> know it's true.  I want to know exactly why.

It's not only the important ACK packets, but also the important REQUEST 
packets.
If you can't/don't send out requests fast enough, the 'pipeline' will 
get idle.


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