Carnegie Mellon's Computing Services department put a paper in every student's mailbox today... it was pretty much entirely about upstream bandwidth (stuff being sent to the net from computers here) because that is the current problem we have.
Here is some of the stuff it said:
Outbound traffic over a 5 day period:
Single top computer: ~75GB
Top 5 combined: ~225GB
www.andrew.cmu.edu and www.cmu.edu combined (the two main webservers here): ~20GB
Our mail servers: ~10GB
Yearly cost of the commodity link (as in, not the Internet2 link, which isn't relevant here - most traffic goes through the commodity link):
1999: $148,325 (<20Mbps - megabits per second)
2000: $265,000 (~20 to 40Mbps throughout year)
2001: $315,000 (40Mbps initially, upped to 55Mbps)
2002: $370,000 (55Mbps)
Right now - since November, we have 100Mbps because our provider doesn't have anyone else who will buy the 45Mbps we don't pay for, but as soon as someone does buy it, we go back to 55Mbps)
The top 50 computers (there are 14,000 on campus) use 45-53% of the total bandwidth each day. About half of these are in the dorms.
Computing Services has now set guidelines about bandwidth usage - 1GB outbound traffic per day (250MB if you're on wireless). Apparently many people who are using more don't even know they are until they are emailed about it. The paper doesn't say if you HAVE to use under 1 gig per day on average, but I get the impression that if you can explain some reasonable use for the bandwidth they won't punish you.
I just thought this was interesting and figured some others here might also. Espeically that guy a while back who was posting how many gig he was uploading each day and how proud he was about it.
Here is some of the stuff it said:
Outbound traffic over a 5 day period:
Single top computer: ~75GB
Top 5 combined: ~225GB
www.andrew.cmu.edu and www.cmu.edu combined (the two main webservers here): ~20GB
Our mail servers: ~10GB
Yearly cost of the commodity link (as in, not the Internet2 link, which isn't relevant here - most traffic goes through the commodity link):
1999: $148,325 (<20Mbps - megabits per second)
2000: $265,000 (~20 to 40Mbps throughout year)
2001: $315,000 (40Mbps initially, upped to 55Mbps)
2002: $370,000 (55Mbps)
Right now - since November, we have 100Mbps because our provider doesn't have anyone else who will buy the 45Mbps we don't pay for, but as soon as someone does buy it, we go back to 55Mbps)
The top 50 computers (there are 14,000 on campus) use 45-53% of the total bandwidth each day. About half of these are in the dorms.
Computing Services has now set guidelines about bandwidth usage - 1GB outbound traffic per day (250MB if you're on wireless). Apparently many people who are using more don't even know they are until they are emailed about it. The paper doesn't say if you HAVE to use under 1 gig per day on average, but I get the impression that if you can explain some reasonable use for the bandwidth they won't punish you.
I just thought this was interesting and figured some others here might also. Espeically that guy a while back who was posting how many gig he was uploading each day and how proud he was about it.
Those prices are through the roof heh, I thought my DSL prices were bad! 
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