That looks like a case for a PERT (Performance Enhancement and Response Team): http://edupert.geant.net/ NORDUnet has unfortunately no PERT listed here: http://edupert.geant.net/PERTs/pert_details.html However, DFN is listed to start the investigation at the other end. Thomas On 27.07.10 10:30, Keld Simonsen wrote:
On Sun, Jul 25, 2010 at 08:14:19PM +0200, Carsten Otto wrote:
Dear Keld,
On Sun, Jul 25, 2010 at 07:32:54PM +0200, Keld Simonsen wrote:
My machines there are on the Danish research network, and close to the Danish Internet exchange (DIX) - some 100 meters from it. We have 10 Gbit on the university campus, but not (yet) to our machines. I would think there is good connection to German research network - I would think it would be a multi gigabit connection. It should be good for multi 100 mbit/s traffic. - not just 10 Mbit.
Should, yes. In reality it is not.
Hmm, I don't understand why. I have contacted local geant2 people and university people for an explanation.
Do other mirror maintaners experience the same - that international connections on eg. 10 gigabit geant2 lines are quite slow? I have a mirror speed test program for pclinuxos that shows me that the max speed I ever get out of international connections are about 40 Mbit/s, and generally these mirrors have at least 1 gigabit connectivity and they are located on the European research network.
I made some tests from my 2 servers with other Danish ISPs for the Aachen site, and they were generally faster than the geant2 lines, but still below 30 Mbit/s.
It is. In this case this was the automatic update for Firefox 3.6.7, so roughly 20% of all (European?) Firefox users downloaded from our server. This is a lot and in average we had 3 GBit/sec.
Impressive. How did you make the file system go that fast? Would your 1 Gigabyte/s speed come out of the RAM or out of the filesystem?
Best regards keld
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