[Bug 1201114] [NEW] ureadahead does not fully utilize disk

[Ed NOvak]

Public bug reported:

First of all, this is on a linux mint system.  It's mint 13 which is
based on Ubuntu 12.04.  The manpage for ureadahead said to report bugs
here so i am.

The problem I'm experiencing is similar to:
https://bugs.launchpad.net/ubuntu/+source/ureadahead/+bug/1074428
however it is exacerbated by the fact that ureadahead does not fully
utilize my disk!  I am only getting about 50% utilization.  Attached is
a bootchart.png from my system.

Also, any tips on getting my system to boot faster are greatly
appreciated!

uname -a
Linux glass 3.2.0-49-generic #75-Ubuntu SMP Tue Jun 18 17:40:13 UTC 2013 i686 i686 i386 GNU/Linux

cat /etc/issue
Linux Mint 13 Maya

apt-cache policy ureadahead
ureadahead:
  Installed: 0.100.0-12
  Candidate: 0.100.0-12
  Version table:
 *** 0.100.0-12 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status


Just to be thorough, I expected ureadahead to get near 100% utilization (min of 80%, average of ~90%) when booting.  Instead I see utilization around 50%.

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


** Tags: boot bootchart boottime bootup ureadahead usage utilization

** Attachment added: "ureadahead achieves only 50% disk util"
   https://bugs.launchpad.net/bugs/1201114/+attachment/3736524/+files/glass-maya-20130713-7.png

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https://bugs.launchpad.net/bugs/1201114

Title:
  ureadahead does not fully utilize disk

Status in “ureadahead” package in Ubuntu:
  New

Bug description:
  First of all, this is on a linux mint system.  It's mint 13 which is
  based on Ubuntu 12.04.  The manpage for ureadahead said to report bugs
  here so i am.

  The problem I'm experiencing is similar to:
  https://bugs.launchpad.net/ubuntu/+source/ureadahead/+bug/1074428
  however it is exacerbated by the fact that ureadahead does not fully
  utilize my disk!  I am only getting about 50% utilization.  Attached
  is a bootchart.png from my system.

  Also, any tips on getting my system to boot faster are greatly
  appreciated!

  uname -a
  Linux glass 3.2.0-49-generic #75-Ubuntu SMP Tue Jun 18 17:40:13 UTC 2013 i686 i686 i386 GNU/Linux

  cat /etc/issue
  Linux Mint 13 Maya

  apt-cache policy ureadahead
  ureadahead:
    Installed: 0.100.0-12
    Candidate: 0.100.0-12
    Version table:
   *** 0.100.0-12 0
          500 http://archive.ubuntu.com/ubuntu/ precise/main i386 Packages
          100 /var/lib/dpkg/status

  
  Just to be thorough, I expected ureadahead to get near 100% utilization (min of 80%, average of ~90%) when booting.  Instead I see utilization around 50%.

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