[Bug 947664] Re: Unpacking linux-headers unbelievably slow in Lubuntu Precise (Beta 1)

[A. Denton]

I can confirm this bug.

The following operations took about 15 minutes.

sudo apt-get install linux-generic linux-headers-generic linux-headers-generic-lts-quantal linux-image-generic linux-image-generic-lts-quantal linux-tools linux-tools-lts-quantal
[...]
Unpacking linux-headers-3.2.0-53 (from .../linux-headers-3.2.0-53_3.2.0-53.81_all.deb) ...
Unpacking linux-headers-3.2.0-53-generic (from .../linux-headers-3.2.0-53-generic_3.2.0-53.81_amd64.deb) ...

Unpacking linux-headers-3.5.0-40 (from .../linux-headers-3.5.0-40_3.5.0-40.62~precise1_all.deb) ...
Unpacking linux-headers-3.5.0-40-generic (from .../linux-headers-3.5.0-40-generic_3.5.0-40.62~precise1_amd64.deb) ...
[...]


Meanwhile: 

:~$ sudo ps aux | grep 'dpkg'
root      1243  1.0  1.2 119988 96836 pts/6    Ds+  11:56   0:04 /usr/bin/dpkg --status-fd 71 --unpack --auto-deconfigure /var/cache/apt/archives/linux-image-3.2.0-53-generic_3.2.0-53.81_amd64.deb /var/cache/apt/archives/linux-image-3.5.0-40-generic_3.5.0-40.62~precise1_amd64.deb /var/cache/apt/archives/linux-generic_3.2.0.53.63_amd64.deb /var/cache/apt/archives/linux-image-generic_3.2.0.53.63_amd64.deb /var/cache/apt/archives/linux-headers-3.2.0-53_3.2.0-53.81_all.deb /var/cache/apt/archives/linux-headers-3.2.0-53-generic_3.2.0-53.81_amd64.deb /var/cache/apt/archives/linux-headers-generic_3.2.0.53.63_amd64.deb /var/cache/apt/archives/linux-headers-3.5.0-40_3.5.0-40.62~precise1_all.deb /var/cache/apt/archives/linux-headers-3.5.0-40-generic_3.5.0-40.62~precise1_amd64.deb /var/cache/apt/archives/linux-headers-generic-lts-quantal_3.5.0.40.46_amd64.deb /var/cache/apt/archives/linux-image-generic-lts-quantal_3.5.0.40.46_amd64.deb /var/cache/apt/archives/linux-tools-3.2.0-53_3.2.0-53.81_amd64.deb /var/cache/apt/archives/linux-tools_3.2.0.53.63_amd64.deb /var/cache/apt/archives/linux-tools-3.5.0-40_3.5.0-40.62~precise1_amd64.deb /var/cache/apt/archives/linux-tools-lts-quantal_3.5.0.40.46_amd64.deb

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https://bugs.launchpad.net/bugs/947664

Title:
  Unpacking linux-headers unbelievably slow in Lubuntu Precise (Beta 1)

Status in “dpkg” package in Ubuntu:
  Confirmed

Bug description:
  The below is an example line in an apt-get dist-upgrade which seems to
  take 30 minutes or more on a 2.1GHz CPU (one core of a quad core
  through Virtualbox). I've been looking at it for ages, and even had
  time to log in here and file the bug  - the line is still 'hung'.

  Unpacking linux-headers-3.2.0-18 (from .../linux-
  headers-3.2.0-18_3.2.0-18.28_all.deb)

  Can anyone explain this, or is it a bug in the configuration of
  Lubuntu, Apt-get or something. I read that there was a similarly
  behaving bug to do with dpkg using paranoid file synchronization but
  this length of delay is frankly a bit crazy.

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