[Bug 1171047] Re: update-manager times out checking for updates

[Robin Sheat]

The SSL negotiation may be an issue, but I'm not sure it explains the 12
minute gap (unless there's something going on that doesn't cause output,
which is feasible.)

It may or may not be related that plain transfers are also very slow.
They rarely get above 60kB/s, often dropping below that. This especially
sucks when a game is pushing a 2GB update. However I'd be surprised if a
single operation was pushing enough data to take that long and
notification wasn't occurring.

I'm trying it again, and seeing similar long times:

mei 09 22:48:13 Geraakt https://private-ppa.launchpad.net raring/main amd64 Packages
mei 09 22:48:13 Geraakt https://private-ppa.launchpad.net raring/main i386 Packages
mei 09 22:48:22 Geraakt https://private-ppa.launchpad.net raring/main amd64 Packages
mei 09 22:48:22 Geraakt https://private-ppa.launchpad.net raring/main i386 Packages
mei 09 22:48:31 Geraakt https://private-ppa.launchpad.net raring/main amd64 Packages
mei 09 22:48:31 Geraakt https://private-ppa.launchpad.net raring/main i386 Packages
mei 09 22:48:38 Geraakt https://private-ppa.launchpad.net raring/main amd64 Packages
mei 09 22:48:39 Geraakt https://private-ppa.launchpad.net raring/main i386 Packages

this isn't the really long one though, it hasn't got that far yet. The
fact that the times group together surprises me too. I imagine it's one
source, but given apt doesn't reuse connections and it's the same host,
I'd expect a more even spread.

I could get a pcap of all the traffic to private-ppa if that'd be
useful. Obviously it'd be a lot of SSL, but the timestamps and
connection requests might be interesting when lined up against a log
like above.

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https://bugs.launchpad.net/bugs/1171047

Title:
  update-manager times out checking for updates

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  I've bought a number of humble bundle games that were activated
  through the software centre, so I have quite a lot of sources in apt.
  The server that they come from is so terribly slow to fetch from that
  it causes the update manager to time out when checking for updates.

  See the attached file for the timestamped output from apt-get update,
  and you'll see that while it's generally slow (multiple seconds
  between requests once the normal speed ones are dealt with) there is
  one that takes about 12 minutes to respond at all (13:21:48 to
  13:34:12)

  This means that I can't update through the ubuntu update manager, nor
  does it tell me when updates are available.

  My internet is quite good, the first lot of sources complete in ~10
  seconds, the problem seems to be at the private-ppa.launchpad.net
  server end. However, this wouldn't be such an issue if the update
  manager didn't time out (but really the solution is to fix the apt
  servers.)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: update-manager 1:0.185
  ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6
  Uname: Linux 3.8.0-17-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.9.2-0ubuntu8
  Aptdaemon:
   
  Architecture: amd64
  Date: Sun Apr 21 13:39:54 2013
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'launch-time' b'1366195146'
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'470'
   b'com.ubuntu.update-manager' b'window-width' b'583'
  InstallationDate: Installed on 2011-04-26 (725 days ago)
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to raring on 2013-04-13 (7 days ago)

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