First of all, I want to thank those of you who tried to attend this Satuday's (September 15, 2007) Sawdust Session for being so decent and understanding about our failure to deliver. It was extremely embarrasing for me, and I do appreciate your interest and your understanding. The fact that we unintentionally wasted your good time and you have refrained from complaining about it and making us feel worse is much appreciated
Because you did invest some time, I feel I owe you an explaination. This is all I know at this juncture:
Drew and I came in early on Saturday morning to set up the web shop. Drew turned on the computers and pinged a service called "Speakeasy." This company sends a signal to several servers across America, these servers ping our encoding coputer, and our computer pings them back. The servers compare the time codes on the pings, calculate our upload and download speeds, and Speakeasy reports them to us. At 8:00 am, 8:30 am, and 8:50 am EST, the speeds looked good -- 1400 KB/s down, 400 kb/s up. The number we worry about the most is the upload speed. We need a minimum of 108 Kb/s to get you a low-resolution video stream, over 300 Kb/s for a medium-resolution stream.
You should also know that we don't have the bandwidth or the equipment to send a video stream directly to all of you. Instead, we send a single stream to a streaming service (Upstream), and they duplicate it and distribute it to multiple viewers.
With 5 minutes to go, we pinged Upstream to open the connection between our server and theirs. We got no answer. We tried again several times, then did a quick speed check. Our upload speed had dropped below 7 Kb/s. (Dial-up modems crawl along at 54 Kb/s.) This situation continued for the entire morning and well into the afternoon. At one time, around 11:00 am EST, when were supposed to begin our second webcast, the upload speed dropped to 1 Kb/s.
At this point, Drew and I decided to call the game. We taped the presentations we had planned and when we left around 3:00 pm, we did a final speed check. The upload speed had climbed to 11 Kb/s -- the highest we had seen since 8:50 am.
Currrently, Drew is adding the intro, outro, and watermark to the presentations, and I will post them on the Sawdust Sessions page (
http://www.shopsmithacademy.com/Sawdust_Sessions.htm) as soon as he's finished. In the meantime, Dave (ADMIN) and I are trying to discover what caused this problem. We have contacted our Internet Service Provider and they are looking into this from their end.
What this all boils down to is that at present we don't know for sure what's going on. For those of you who speak technobabble, my suspicion is that the ISP connection that Times Warner advertises as being "as good as" a T1 line really isn't. The up/down numbers from Speakeasy indicate that it is instead an ADSL -- an Assymetric Digital Service Line in which the equipment used favors the download signal over the upload signal. At the very least we may have to upgrade to an SDSL (Symetric Digital Service Line) or open a second connection to be able to webcast live content on schedule.
All of this is guesswork at this point, and I'm taking the time to explain what little I know because I value your interest and your friendship.
Drew, Dave, and I will work as hard as we can to solve this problem before the next scheduled Sawdust Session (September 29), and I'll keep you informed of our progress.
With all good wishes,