Slow download from servers

Bug #430484 reported by Mikkel Kamstrup Erlandsen on 2009-09-16
This bug affects 2 people
Affects Status Importance Assigned to Milestone

Bug Description

First, sorry, I haven't the faintest clue on where to file this issues on the servers, so here goes...

I have been seeing some erratic behavior from the servers for some time now when I am downloading files from the domain (~1 month, maybe more). Firstly when I start the download it screams down at a whopping > 6MB/s, this goes for the first ~100MB and then drops slowly down to ~6 KB/s within a few minutes.

For a concrete example I am seeing this just now with:

I probably wouldn't have reported this if it wasn't because I mentioned it to some of the other guys at the office and they had also experienced the exact same symptoms for some time now, making me believe that I am probably not out on a limb.

Otherwise my network connection is rock solid and generally very fast

I am attaching the output of 'mtr' in case it matters...

David R. Hedges (p14nd4) wrote :

I downloaded the karmic cdimage today, and saw similar behavior ... would fluctuate between ~300 KiB/s and 380 B/s.

tracert from right now (sorry, didn't think to check when I downloaded):
  4 21 ms 21 ms 18 ms
  5 19 ms 18 ms 22 ms []
  6 44 ms 49 ms 43 ms []
  7 110 ms 110 ms 105 ms []
  8 111 ms 111 ms 110 ms []
  9 111 ms 111 ms 111 ms []
 10 107 ms 106 ms 109 ms
 11 112 ms 107 ms 111 ms []
 12 107 ms 117 ms 107 ms []

Changed in ubuntu:
status: New → Confirmed
Luke Faraone (lfaraone) wrote :

This isn't really a bug in Ubuntu, rather, it is a known problem of the internet: servers have finite bandwidth. The best solution would be to use a local mirror.

Changed in ubuntu:
status: Confirmed → Invalid

No need to be condescending Luke, I have indeed heard of this here "internet" before ;-)

How did you deduct that it is a bandwidth issue, and not a local IO issue on the Canonical servers?

Luke Faraone (lfaraone) wrote :

Apologies, that was not my intent.

Anyway, the best place to discuss infrastructure issues is via IRC at #canonical-sysadmin, escalating to a rt ticket if needed. <email address hidden> is the email address for that specific RT issue queue, I believe.

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