[e2e] Are we doing sliding window in the Internet?

Injong Rhee rhee at ncsu.edu
Sat Jan 5 16:36:16 PST 2008

There have been a lot of discussions even in this mailing list on why  
tcp-newreno fails in certain cases -- i don't want to go through that  
discussion again.

I agree that the process could have been more diplomatic and it could  
have been improved. However, what's done is done. Wide-scale tests in  
some sense have been done for three to four years, as you said,  
unknowingly. If you don't trust that as a test, I am puzzled on what  
kind of wide-scale tests (with volunteers) we can do without causing  
disruption on the production networks.

Could you suggest the kind of wide-scale tests we can do with proper  
measurement and real users involved in real Internet and without  
causing disruption? It seems almost unrealistic. Besides, were the  
same types of tests performed before their release of IETF TCPs? was  
it less disruptive then than now to introduce new algorithms without  
proper wide-scale tests?


On Jan 6, 2008, at 1:51 AM, Joe Touch wrote:
> Certainly. But the key is whether we need a new algorithm, whether  
> there
> is a benefit, and whether the benefit warrants the risks. That may all
> have been proven sufficiently for a wide-scale test with volunteers
> aware that they're participating, but I don't like the idea of  
> releasing
> this to unwitting users without making it clear they're part of  
> such an
> experiment. IMO, the widescale volunteer test is the step that has  
> been
> skipped here.
> Joe

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