[Tsvwg] Re: [e2e] What's the benefit of out-of-order processi

[Michael A. Ramalho]

At 06:25 PM 9/17/2001 -0700, Sam Liang wrote:
>Venkata,
>
>   I took a look at the documents you suggested.  The first two
>(atm2000.pdf and sld009.htm) presented some data to show that SCTP is TCP
>friendly.  But I saw no experiements done and no data presented to show
>TCP's alleged problem of head-of-line blocking and delay.

Paul Lin (of Telcordia Technologies then) showed several plots
depicting the problem at the first sigtran meeting (or maybe
the BOF that led to sigtran's creation). The "alleged" problem is
real for transactions stuck behind the blocked/dropped
segment. Maybe Paul's slides they are archived in the
sigtran meeting minutes.

I think Paul is now at Intel ... but do not know if he is on tsvwg.


>   Also, doesn't TCP's urgent pointer offer a means to deliver out-of-band
>data?
>
>Sam
>
>
> >
> > All:
> >
> >    Interested guys can look at SCTP Performance over TCP
> >    (How strict ordering introduces head of line blocking and delay)
> >    http://tdrwww.exp-math.uni-essen.de/pages/forschung/atm2000.pdf
> >    http://www.ietf.org/proceedings/00jul/SLIDES/sigtran-bakeoff/sld009.htm
> >
> >    Yes! Megaco/H.248 over SCTP has been proposed!
> >    http://www.ietf.org/proceedings/00dec/I-D/draft-ietf-megaco-h248h-00.txt
> >
> >    There were proposal for SIP & LDP over SCTP but not accepted!
> >    http://www.ietf.org/internet-drafts/draft-rosenberg-sip-sctp-01.txt
> >
> > --Venkata Naidu
>
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Michael A. Ramalho, Ph.D.
Office email: mramalho at cisco.com
Personal email: mar42 at cornell.edu
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