- From: Simon Spero <ses@tipper.oit.unc.edu>
- Date: Fri, 1 Dec 1995 15:30:13 -0800 (PST)
- To: touch@ISI.EDU
- Cc: mogul@pa.dec.com, touch@ISI.EDU, marc@ckm.ucsf.edu, www-talk@www0.cern.ch, www-speed@tipper.oit.unc.edu
On Fri, 1 Dec 1995 touch@ISI.EDU wrote: The concept of speculative transmission has been in HTTP-NG from back before it was HTTP-NG; the technique can be used with HTTP/1.X with persisent connections, but for several reasons, I believe that this is not ideal. The main reason is the potentially negative effects of speculative-mistakes; if complete documents are sent in monolithic chunks, you need to wait for the whole of one document to arrive before you can see what's next. With NG's interleaving you can send small chunks of each object. Since the first bytes are the most important in terms of user response, this improves percieved TTR. This also makes speculation suitable for use even over large bandwidth links (for example, filling out the last packet up to the MSS.) Simon --- (defun modexpt (x y n) "computes (x^y) mod n" (cond ((= y 0) 1) ((= y 1) (mod x n)) ((evenp y) (mod (expt (modexpt x (/ y 2) n) 2) n)) (t (mod (* x (modexpt x (1- y) n)) n))))
Received on Saturday, 2 December 1995 04:13:30 UTC