[Bug 525049] Re: 3G download speed is very slow compared to Hardy on elderly PIII computers or Microsoft Windows OSs

[Hans Hellén]

Typing error at comment #4: 
> 80–90 kB/s maybe, but the speed was interestingly widely fluctuating between 54–110 kB/sec (seen in Firefox 
> Download window) and 34–129 KiB/s (seen in System Monitor). During my second download test the 
> fluctuation was not so strong any more, resulting in about 70 kB/s on the average.

I forgot to mention here, that the fluctuation was observed using Ubuntu
10.04 LTS (Lucid Lynx) Alpha 3 live-CD.

** Description changed:

  Binary package hint: ppp
  
  A mobile broadband download is very slow (only 10–20 % of what it is
- supposed to be) in Jaunty, Karmic and Lucid-alpha2 (and also in Hardy
- used in more modern computers, ie. P4->) 0.4–0.6 Mb/s, when the
+ supposed to be) in Jaunty, Karmic and Lucid Lynx Alpha 3 (and also in
+ Hardy used in more modern computers, ie. P4->) 0.4–0.6 Mb/s, when the
  theoretical max. speed of the affected ISP's plan is 3.6 Mb/s (in
  practise the speed is about 3 Mb/s in Windows Vista).
  
  To reproduce:
  Download an Ubuntu iso-image from a nearest mirror. In Hardy used with elderly PIII laptop (see Comment #2 for lshw) download speed is 250–300 kB/s, which is a good five times faster than in Jaunty (about 60 kB/s).
  
  This is a regression and performance issue related to download speed, which is at worst ten times slower on average compared to Windows OS's (40 kB/s vs. 400 kB/s). The extremely slow speed seems to be USB/3G modem independent (tested in Nokia CS-15, Huawei e1552, Huawei E230, Nokia cell phone 6220 classic, ...). Currently there is a Finnish discussions going on at
  http://forum.ubuntu-fi.org/index.php?topic=31241.msg244415#msg244415
  http://forum.ubuntu-fi.org/index.php?topic=31241.msg244345#msg244345
  Karmic:
  http://forum.ubuntu-fi.org/index.php?topic=29763.msg243897#msg243897
  
  Interesting is that, when you download for example four Ubuntu distros
  in the same time, your download speed is approximately: 60 kB/s + 60
  kB/s + 60 kB/s + 60 kB/s = 240 kB/s. When you cancel three of those
  downloads, you will continue with the "normal" Jaunty download speed
  that is surprisingly 60 kB/s. Some other day the individual download
  speed could be only about 40 kB/s. On the other hand, torrent download
  (several seeders) is quite fast: about 300 kB/s.
  
  Tested both near the capital city centre of Helsinki and also at the
  very edge of the 3G field at countryside. There is no diffenrence
  between locations.
  
  Tested with: NetworkManager and Wvdial (and by other people with umtsmon
  and vodavone-mobile-connect). No difference.
  
  Most probably these speed / network bandwidth issues are related only to
  one internet service provider called Sonera (TeliaSonera) in Finland.
  Nevertheless, last autumn the "HelpDesk" at Sonera did not comment this
  issue.
  
- 
  ProblemType: Bug
  Architecture: i386
  DistroRelease: Ubuntu 9.04
  ExecutablePath: /usr/sbin/pppd
  Package: ppp 2.4.5~git20081126t100229-0ubuntu2
  ProcAttrCurrent: unconfined
  ProcEnviron: PATH=(custom, no user)
  SourcePackage: ppp
  Uname: Linux 2.6.28-18-generic i686

-- 
3G download speed is very slow compared to Hardy on elderly PIII computers or Microsoft Windows OSs
https://bugs.launchpad.net/bugs/525049
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