What he's asking is, can the upload server outrun the download? The answer is in many cases, of course, yes, but servers don't upload faster than your computer (cable modem/router/etc.) is asking for the data. On a 20.0 connection, the upload machine will send data at the lesser of 20.0 or what it is capable of uploading. If somebody at Google's server farm is asking for a YouTube video, on the other hand, the transfer speed is likely to be something awesome.
On Apr 19, 2008, at 9:15 PM, Lee Larson wrote: > On Apr 19, 2008, at 7:09 PM, Profile wrote: > >> Insight continues to offer the 20 mpm speed for the $20.00 increase >> in cost, and I know it works but I am puzzled as to how. Upload >> speeds are so much slower, even with a T-1 or another higher speed >> that a company may offer, how does the end user reap the benefit of >> the double speed when there are these caps on what a server can send? > > A T1 (also called DS1) connection isn't really that fast -- only > about 1.5 Mb/s. What you're really paying for with a T1 is a > guaranteed symmetric connection at that speed and guaranteed uptime. > > The Big Boys have Internet backbone connections that can move > traffic at tens or even hundreds of Gb/s. (How fast can Google move > data onto the Internet?) > >> Is there a limit where the upload speeds could not keep up with the >> download, 40 or 50 mpm? I know there must be a simple answer. > > I'm not sure what you're asking here. There is a limit to your > download speed that's caused by the asymmetric connection speed. > Downloads are sent in packets and each packet has to be > acknowledged. If your upload can't acknowledge the packets as they > are arriving because it's so much slower, then you've hit a > limitation that can only be fixed by raising the packet size. This > is one of the big problems with telephone modems, but probably > doesn't happen that often with cable. > > > _______________________________________________ > The next Louisville Computer Society meeting will > be April 22 at MacAuthority, 128 Breckinridge Lane. > Posting address: [email protected] > Information: http://www.math.louisville.edu/mailman/listinfo/macgroup _______________________________________________ The next Louisville Computer Society meeting will be April 22 at MacAuthority, 128 Breckinridge Lane. Posting address: [email protected] Information: http://www.math.louisville.edu/mailman/listinfo/macgroup
