[Bug 1240699] [NEW] reinstall system extremely slow

[Paul Larson]

Public bug reported:

Image: 20131016.1 saucy amd64 desktop

I started an install with "reinstall system" selected on virtualbox a
little over 20 min. ago. At least for the past 15 min or so, it seems to
still be stuck on the "Saving installed packages" step.

A quick look at /var/log/syslog shows that it *is* making progress, but
it's extremely slow. This was a test install for the iso testing before,
so I didn't have loads of extra packages installed or anything.  Looking
at top, I saw it alternating between dpkg-deb and rcu_sched being the
busiest processes, each taking 20-30% cpu or so.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubiquity 2.15.26
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
CasperVersion: 1.336ubuntu1
Date: Wed Oct 16 15:50:06 2013
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug rls-s-incoming saucy ubiquity-2.15.26 ubuntu

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https://bugs.launchpad.net/bugs/1240699

Title:
  reinstall system extremely slow

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  Image: 20131016.1 saucy amd64 desktop

  I started an install with "reinstall system" selected on virtualbox a
  little over 20 min. ago. At least for the past 15 min or so, it seems
  to still be stuck on the "Saving installed packages" step.

  A quick look at /var/log/syslog shows that it *is* making progress,
  but it's extremely slow. This was a test install for the iso testing
  before, so I didn't have loads of extra packages installed or
  anything.  Looking at top, I saw it alternating between dpkg-deb and
  rcu_sched being the busiest processes, each taking 20-30% cpu or so.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubiquity 2.15.26
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.336ubuntu1
  Date: Wed Oct 16 15:50:06 2013
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MarkForUpload: True
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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