[Bug 977461] [NEW] Dealing apt-get tasks is really slow under btrfs

[František Zatloukal]

Public bug reported:

Dealing apt-get tasks is really slow under btrfs filesystem. It is
usually about on 500% time of ext4. Tested with stock mount options and
my custom (compress=lzo autodefrag) - no difference. Tested on x86_64
and x86 system too. Tested on two different machines.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: apt-utils 0.8.16~exp12ubuntu7
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Mon Apr  9 20:57:09 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120330)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
SourcePackage: apt
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/977461

Title:
  Dealing apt-get tasks is really slow under btrfs

Status in “apt” package in Ubuntu:
  New

Bug description:
  Dealing apt-get tasks is really slow under btrfs filesystem. It is
  usually about on 500% time of ext4. Tested with stock mount options
  and my custom (compress=lzo autodefrag) - no difference. Tested on
  x86_64 and x86 system too. Tested on two different machines.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: apt-utils 0.8.16~exp12ubuntu7
  ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
  Uname: Linux 3.2.0-22-generic x86_64
  ApportVersion: 2.0-0ubuntu4
  Architecture: amd64
  Date: Mon Apr  9 20:57:09 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120330)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=cs_CZ.UTF-8
   SHELL=/bin/bash
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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