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Rubycon

Madame President
Aug 10, 2005
17,768
485
126
Originally posted by: L1FE
I don't see why people keep on comparing their crappy DSL or cable to a school's internet connection. Many universities have OC3 connection which allows for ~155 Mbps of bandwidth which roughly translates to a little less than 20 megs a sec. Many universities have even faster connections over Internet 2 and can easily push beyond with a backbone that supports up to 10Gbps of bandwidth. Not all universities are this lucky obviously, but it isn't impossible to reach even what some people are considering the borderline 10 meg/s. Before calling shens, maybe some of you should start researching what cutting edge internet technology (always implemented in the academic setting first) can really do. This isn't your typical Verizon DSL bs.

Edit: And yes, Firefox immediately begins to download a file the second you click on the link. I'm not saying he was getting it at 50 MB/s, but considering his potential bandwidth, it isn't out of the question to have his download finish in the 3 seconds after he's finally decided where to store his files. What really should matter is...what mirror did you download it off of and how quickly does the possible I2 line transfer to I1? :p

Basic info on I2
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I don't care if you have a dedicated OC-192 in your closet you will *never* see those speeds to a typical PC.

If you have a few gigs of ram on a real workstation (multiple xeon or opteron) with a large scsi array with caching controller and tweak everything you may see it from sites that have lots of bandwidth. Personally the fastest I've seen download (real rates) of a big file like SP2 was about 22 MB/S on a gigabit ethernet handout.

Most sites are much slower because hundreds if not thousands of others are getting files as well. With a fat pipe you're just eating as much as 20 or 30 cable users at once.

 

L1FE

Senior member
Dec 23, 2003
545
0
71
Originally posted by: C6FT7
Originally posted by: L1FE
I don't see why people keep on comparing their crappy DSL or cable to a school's internet connection. Many universities have OC3 connection which allows for ~155 Mbps of bandwidth which roughly translates to a little less than 20 megs a sec. Many universities have even faster connections over Internet 2 and can easily push beyond with a backbone that supports up to 10Gbps of bandwidth. Not all universities are this lucky obviously, but it isn't impossible to reach even what some people are considering the borderline 10 meg/s. Before calling shens, maybe some of you should start researching what cutting edge internet technology (always implemented in the academic setting first) can really do. This isn't your typical Verizon DSL bs.

Edit: And yes, Firefox immediately begins to download a file the second you click on the link. I'm not saying he was getting it at 50 MB/s, but considering his potential bandwidth, it isn't out of the question to have his download finish in the 3 seconds after he's finally decided where to store his files. What really should matter is...what mirror did you download it off of and how quickly does the possible I2 line transfer to I1? :p

Basic info on I2
More I2 Info

I don't care if you have a dedicated OC-192 in your closet you will *never* see those speeds to a typical PC.

If you have a few gigs of ram on a real workstation (multiple xeon or opteron) with a large scsi array with caching controller and tweak everything you may see it from sites that have lots of bandwidth. Personally the fastest I've seen download (real rates) of a big file like SP2 was about 22 MB/S on a gigabit ethernet handout.

Most sites are much slower because hundreds if not thousands of others are getting files as well. With a fat pipe you're just eating as much as 20 or 30 cable users at once.

Again, if you would ever be so careful, I did not say he WAS getting those speeds. I merely outlined that it was ludicrous for people to compare his speeds with their DSL/cable lines. I merely pointed out the FACT that with that kind of available (not necessarily used) bandwidth, you could easily start downloading at 10-15MB/s the second you clicked on the link. By the time you actually shuffle through your harddrives/directories and click save, the download would have seemed to have finished in seconds, when the whole time Firefox had already been downloading. While I can understand your points, what I don't understand is why you are trying to defend something that I never disagreed with? Just because certain points in a discussion are brought up such as available bandwidth from a university that may differ from what you or others might have originally believed, doesn't mean I disagree with the overall sentiment that 50 MB/s is almost certain impossible.
 

Imdmn04

Platinum Member
Jan 28, 2002
2,566
6
81
Originally posted by: L1FE
Originally posted by: C6FT7
Originally posted by: L1FE
I don't see why people keep on comparing their crappy DSL or cable to a school's internet connection. Many universities have OC3 connection which allows for ~155 Mbps of bandwidth which roughly translates to a little less than 20 megs a sec. Many universities have even faster connections over Internet 2 and can easily push beyond with a backbone that supports up to 10Gbps of bandwidth. Not all universities are this lucky obviously, but it isn't impossible to reach even what some people are considering the borderline 10 meg/s. Before calling shens, maybe some of you should start researching what cutting edge internet technology (always implemented in the academic setting first) can really do. This isn't your typical Verizon DSL bs.

Edit: And yes, Firefox immediately begins to download a file the second you click on the link. I'm not saying he was getting it at 50 MB/s, but considering his potential bandwidth, it isn't out of the question to have his download finish in the 3 seconds after he's finally decided where to store his files. What really should matter is...what mirror did you download it off of and how quickly does the possible I2 line transfer to I1? :p

Basic info on I2
More I2 Info

I don't care if you have a dedicated OC-192 in your closet you will *never* see those speeds to a typical PC.

If you have a few gigs of ram on a real workstation (multiple xeon or opteron) with a large scsi array with caching controller and tweak everything you may see it from sites that have lots of bandwidth. Personally the fastest I've seen download (real rates) of a big file like SP2 was about 22 MB/S on a gigabit ethernet handout.

Most sites are much slower because hundreds if not thousands of others are getting files as well. With a fat pipe you're just eating as much as 20 or 30 cable users at once.

Again, if you would ever be so careful, I did not say he WAS getting those speeds. I merely outlined that it was ludicrous for people to compare his speeds with their DSL/cable lines. I merely pointed out the FACT that with that kind of available (not necessarily used) bandwidth, you could easily start downloading at 10-15MB/s the second you clicked on the link. By the time you actually shuffle through your harddrives/directories and click save, the download would have seemed to have finished in seconds, when the whole time Firefox had already been downloading. While I can understand your points, what I don't understand is why you are trying to defend something that I never disagreed with? Just because certain points in a discussion are brought up such as available bandwidth from a university that may differ from what you or others might have originally believed, doesn't mean I disagree with the overall sentiment that 50 MB/s is almost certain impossible.

No large universities can afford all gigabit switches. Typically you would have gigabit connections to the MDF of the building then 100Mb edge switches on each floor. Even if you have I2, your speed will probably never exceed 100Mb. You will only get gigabit speeds if everything along the way is gigabit, which is damn near imposssible considering they are very expensive to hook up in every building.

 

Anubis

No Lifer
Aug 31, 2001
78,712
427
126
tbqhwy.com
Originally posted by: L1FE
I don't see why people keep on comparing their crappy DSL or cable to a school's internet connection. Many universities have OC3 connection which allows for ~155 Mbps of bandwidth which roughly translates to a little less than 20 megs a sec. Many universities have even faster connections over Internet 2 and can easily push beyond with a backbone that supports up to 10Gbps of bandwidth. Not all universities are this lucky obviously, but it isn't impossible to reach even what some people are considering the borderline 10 meg/s. Before calling shens, maybe some of you should start researching what cutting edge internet technology (always implemented in the academic setting first) can really do. This isn't your typical Verizon DSL bs.

Edit: And yes, Firefox immediately begins to download a file the second you click on the link. I'm not saying he was getting it at 50 MB/s, but considering his potential bandwidth, it isn't out of the question to have his download finish in the 3 seconds after he's finally decided where to store his files. What really should matter is...what mirror did you download it off of and how quickly does the possible I2 line transfer to I1? :p

Basic info on I2
More I2 Info

when i was in college 2000-2004, my home cable line which was 3.0 for most of thst time was faster then what we hhad at school by about 2x
 

haveblue

Banned
Aug 9, 2005
149
0
0
The fastest I've ever had was ~5 mb/s (megabytes not bits).. It only lasted for about 20 minutes though, since then I'm stuck at my 10Mbit cap, so around 1.2mb/s.. from a good server.. I usually average around 800kb/s.. though, my isp sucks sometimes and I don't get nearly the full speed I should..