Return-Path: william@bourbon.usc.edu Delivery-Date: Mon Oct 20 20:21:57 2008 X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on merlot.usc.edu X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.2.3 Received: from bourbon.usc.edu (bourbon.usc.edu [128.125.9.75]) by merlot.usc.edu (8.14.1/8.14.1) with ESMTP id m9L3LvaZ018300 for ; Mon, 20 Oct 2008 20:21:57 -0700 Received: from bourbon.usc.edu (localhost.localdomain [127.0.0.1]) by bourbon.usc.edu (8.14.2/8.14.1) with ESMTP id m9L3VF75015452 for ; Mon, 20 Oct 2008 20:31:15 -0700 Message-Id: <200810210331.m9L3VF75015452@bourbon.usc.edu> To: cs551@merlot.usc.edu Subject: Re: TCP question Date: Mon, 20 Oct 2008 20:31:15 -0700 From: Bill Cheng Someone wrote: > In warmup-1 we are writing one byte at a time on to the socket. > Is this byte transferred immediately ? Of course not! Please see slide 16 of lecture 13. > To avoid the overhead > does the TCP have a stack where it waits for data to be of a > fixed size (or timed out). This has been bothering me lately. If > there is no stack then we did waste lot of bandwidth on headers > only. Not a stack! A buffer! By the way, during exams, I can only grade based on what's written down and not what in your head! So, if the answer is a "buffer" and you said "stack", you probably will not get much credit because I must assume that you know the difference between a "buffer" and a "stack". Technical words have specific meanings in the technical world. I do expect you all to get "professional" during exams. When you go on a technical interview, the expectation is that you meant every word you said and it is a very reasonable expectation! It's considered a "communication skill". So, please get use to using technical terms correctly! -- Bill Cheng // bill.cheng@usc.edu