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

[Roger]

I think you are on to something here.
I will try this solution on next kernel update.

I also found some information why this setting is not turned on by default:
https://www.electricmonk.nl/log/2016/03/14/terrible-virtualbox-disk-performance/

I have also created an issue at the VirtualBox forum (Kernel updates in VM with Ubuntu 18.04 host (kernel 5.0.0.x) takes very very long time):
https://forums.virtualbox.org/viewtopic.php?f=7&t=94822&sid=86f403dbb1ae5474d61565f11d33486c


/My regards from Sweden
Roger

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

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

Status in dpkg:
  New
Status in dpkg package in Ubuntu:
  Fix Released

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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