[p2p-hackers] UDP file transfer link speed identification

[Saikat Guha]

On Thu, 2005-07-21 at 16:19 -0700, David Barrett wrote:
> Now, after the slow-start approach hit the ceiling and backed off some 
> fraction, it could just restart with exponential growth again.  [...]
> Thus rather than quickly shooting up to the 
> ceiling with exponential growth, it just creeps up using linear growth 
> until it experiences packet loss again.

In addition, if it just uses the exponential ramp-up and ramp-down then
multiple TCPs do not converge to their fair-shares. Given the choice of
multiplicative (M) and additive (A), increase (I) and decrease (D): I
think only MIAD and AIMD converge to the full link bandwidth, and of
that only AIMD converges to the fair share as well. [1]

[1] http://www.cse.ohio-state.edu/~jain/papers/ftp/cong_av.pdf

cheers,
-- 
Saikat
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