 funchordsHelloPremium,MVM
join:2001-03-11
Yarmouth Port, MA
kudos:5
1 edit | reply to espaeth
Re: Well worth reading on why P2P causes problems said by espaeth:Oversubscription at the edge is common in every network design; it's a matter of efficiency. I really do understand this, espaeth. I'm not one of these guys who think that 384 Kbps should be reserved for my account 24/7/365. Please help me by showing me where I said something different. (This is a serious request. If I screwed up and wrote something carelessly, I don't want it to be misinterpreted.)
I am having trouble with the semantics. Let me explain:
Based on past experience, a service provider observes that for every 1000 customers, no more than 100 are ever attempting to upload at any one time. During his past 20 busiest hours, this has remained true for 19 of them (95%*). Therefore, he builds his network to handle THAT capacity -- the capacity of 100 simultaneous uploads. To me, that's not oversubscription. That's simply the way that bandwidth is planned and provided.
*I don't necessarily mean to invoke the meaning of the 95th percentile here. Instead, I'm trying to say that the observation is reliable 95% of the time.
Is the above "over-subscription?" Or is that roughly the way that all data customers of any kind plan and allocate for their needs?
I have heard people say that an ISP should not sell more accounts than they could handle if everyone jumped online and started to upload/download at capacity. I've never been one of those voices.
When I say "over-subscription," I mean that the service provider has stopped trying to reliably meet the data demands of his users.
Are there more accurate or concise terms I should use?
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Robb Topolski -= funchords.com =- Hillsboro, Oregon
"We don't throttle any traffic," -Charlie Douglas, Comcast spokesman, on this report. |
