On Sun, 7 Nov 2010, George Bonser wrote:
I guess you didn't read the links earlier. It has nothing to do
with
stack tweaks. The moment you lose a single packet, you are toast. And
TCP SACK.
I'm too tired to correct your other statements that lack basis in reality (or at least in my reality).
But the point being, why should everyone have to be forced into making multiple tweaks to their stacks to accommodate a worst case when a single change (and possibly a change in total buffer size) is all that is needed to get improved performance globally? With modern PMTUd that is nearly globally supported at this point, it just isn't as big of an issue as it was, say, 5 years ago. It isn't that big of an issue but it does seem to be a very inexpensive change that offers a large benefit. It will happen on its own as more and more networks configure internally for larger frames and as more people migrate out of academia where 9000 is the norm these days into industry.