[e2e] Spurious Timeouts, Fact or Fake?

Detlef Bosau detlef.bosau at web.de
Wed Aug 3 11:54:51 PDT 2011

On 08/03/2011 06:42 PM, Jasleen Kaur wrote:
> Detlef,
> You might find our paper (below) interesting, in which we analyze 
> traces of nearly 3 million Internet transfers to study the performance 
> of TCP loss detection and recovery mecahnisms. Among other things, it 
> also logs the occurence of spurious timeouts on a per-OS basis.
> S. Rewaskar, J. Kaur, and F.D. Smith, "A Performance Study of Loss 
> Detection/Recovery in Real-world TCP Implementations,"** 
> <http://www.cs.unc.edu/%7Ejasleen/papers/icnp07.pdf> in Proceedings of 
> the IEEE International Conference on Network Protocols (ICNP'07), 
> Beijing, China, Oct 2007.
> http://www.cs.unc.edu/~jasleen/papers/icnp07.pdf 
> <http://www.cs.unc.edu/%7Ejasleen/papers/icnp07.pdf>
> Thanks,
> Jasleen

Thanks for the hint. BTW: The entries for Linux in Table 1 are a bit 
confusing? RTO = srtt + vartt, however you note m=1 and k=4?

In addition, the gains a and b are the same for all OS and as 
recommended by RFC 2988.

I think, the interesting question is whether the formulae for srtt and 
vartt converge.....

And of course, there may be additional questions, once I've read the 
hole paper in detail.

Detlef Bosau
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