This thread has drifted all over the place and the only conclusions I can see are: The core infrastructure MTU is >= 1500 People are telling clients to set their Win95 MTU to 576 PMTU is randomly broken by clueless filtering Some dial-access devices are buffer limited A small MTU (53 byte?) would increase perceived response at the expense of performance I have been an advocate of the bigger defaults is better camp, but there is a real concern that the wrong values could actually cause more damage than their gain is worth. If the above list is incorrect or incomplete it would be useful for people to constructively tell Peter that now.
On Fri, Feb 06, 1998 at 10:50:31AM -0800, Tony Hain wrote:
This thread has drifted all over the place and the only conclusions I can see are:
The core infrastructure MTU is >= 1500 People are telling clients to set their Win95 MTU to 576
People are asserting that Win98 comes with it's MTU set this low, which appears to be generally considered to be a bad idea.
PMTU is randomly broken by clueless filtering Some dial-access devices are buffer limited A small MTU (53 byte?) would increase perceived response at the expense of performance
Browsers, and other software which open multiple connections should temper their connection counts based on the size of the perceived pipe; ie: some connect-level heuristics to do proper PMTUD and _make the answer available to applications_ would probably be useful.
I have been an advocate of the bigger defaults is better camp, but there is a real concern that the wrong values could actually cause more damage than their gain is worth. If the above list is incorrect or incomplete it would be useful for people to constructively tell Peter that now.
That's the only one that I can see that you missed. Any effort expended to improve the quality of the default stack in Win9X would probably be A Good Thing... given the current population of the net. Cheers, -- jra -- Jay R. Ashworth jra@baylink.com Member of the Technical Staff Unsolicited Commercial Emailers Sued The Suncoast Freenet "Two words: Darth Doogie." -- Jason Colby, Tampa Bay, Florida on alt.fan.heinlein +1 813 790 7592 Managing Editor, Top Of The Key sports e-zine ------------ http://www.totk.com
On Fri, 6 Feb 1998, Jay R. Ashworth wrote:
Browsers, and other software which open multiple connections should temper their connection counts based on the size of the perceived pipe; ie: some connect-level heuristics to do proper PMTUD and _make the answer available to applications_ would probably be useful.
How about the browsers just implement HTTP/1.1 and use pipelined persistant connections? Why invent some new fangled connection management crud when there's a much better way to utilize the pipe. See <http://www.w3.org/Protocols/HTTP/Performance/Pipeline.html> for example. Just imagine how well that would work if they were talking to a local proxy. Dean
participants (3)
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Dean Gaudet -
Jay R. Ashworth -
Tony Hain