Re: TCP limitations (was Re: ISCSI: Urgent Flag requirement violates TCP.)

[Vern Paxson <vern@ee.lbl.gov>]

> The
> relationship of anonymous buffer size is really to 1/sqrt(p), and not the
> BW or the RTT per-se.

Yes!, well put.

Viewed another way: it is *really* hard to get TCP to sustain a very high
data rate over a WAN.  So I question whether the design point of GB/s
long-haul rates makes sense in practice.  If it doesn't, then the buffering
requirements go way down, and it's not clear that failing to find framing
for out-of-sequence segments is in fact all that expensive.

		Vern