[Bug 910966] [NEW] Btrfs filesystem is extremly slow

[EricDHH]

Public bug reported:

Maverick 11.10 i386 on thinkpad X41

This is the first trial of btrfs on such machine, it is equipped with a fast ssd. All setup and dpkg actions took around 5 times slower that a setup with xfs, ext2/3/4. Every boot and application start took around 3 times slower than on the other filesystems. I have already placed ssd speedup options for the scheduler and noatime, but this results to nothing.
In certain speedtests in the net, btrfs seems to be at the same speed like ext4, but i cannot see this here.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: btrfs-tools 0.19+20100601-3ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-14.23-genusername 3.0.9
Uname: Linux 3.0.0-14-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Mon Jan  2 21:30:20 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 LANGUAGE=de:en
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 LC_MESSAGES=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: btrfs-tools
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: btrfs-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 oneiric running-unity

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https://bugs.launchpad.net/bugs/910966

Title:
  Btrfs filesystem is extremly slow

Status in “btrfs-tools” package in Ubuntu:
  New

Bug description:
  Maverick 11.10 i386 on thinkpad X41

  This is the first trial of btrfs on such machine, it is equipped with a fast ssd. All setup and dpkg actions took around 5 times slower that a setup with xfs, ext2/3/4. Every boot and application start took around 3 times slower than on the other filesystems. I have already placed ssd speedup options for the scheduler and noatime, but this results to nothing.
  In certain speedtests in the net, btrfs seems to be at the same speed like ext4, but i cannot see this here.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: btrfs-tools 0.19+20100601-3ubuntu3
  ProcVersionSignature: Ubuntu 3.0.0-14.23-genusername 3.0.9
  Uname: Linux 3.0.0-14-generic i686
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  Date: Mon Jan  2 21:30:20 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcEnviron:
   LANGUAGE=de:en
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   LC_MESSAGES=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: btrfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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