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[sk <1218568@xxxxxxxxxxxxxxxxxx>]

My speed tests shows:

# hdparm -tT /dev/sd[ab]

/dev/sda:
 Timing cached reads:   1544 MB in  2.00 seconds = 771.83 MB/sec
 Timing buffered disk reads: 170 MB in  3.02 seconds =  56.28 MB/sec

/dev/sdb:
 Timing cached reads:   956 MB in  2.00 seconds = 477.70 MB/sec
 Timing buffered disk reads: 106 MB in  3.04 seconds =  34.91 MB/sec

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https://bugs.launchpad.net/bugs/1218568

Title:
  [btrfs] slow boot

Status in “linux” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Invalid

Bug description:
  Bootup from power on to login prompt takes several minutes. In the
  bootchart I can see that there is sometimes a lot of IO while other
  times there is no cpu usage and no io. I cannot identify the reason
  for this. Several updates doesn't change anything. I assumed that
  upstart will boot rather fast.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-29-generic 3.8.0-29.42
  ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
  Uname: Linux 3.8.0-29-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  sk         2509 F.... pulseaudio
   /dev/snd/pcmC0D0p:   sk         2509 F...m pulseaudio
  CRDA:
   country DE:
    (2400 - 2483 @ 40), (N/A, 20)
    (5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
    (5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
    (5470 - 5725 @ 40), (N/A, 26), DFS
  Date: Thu Aug 29 21:03:20 2013
  HibernationDevice: RESUME=UUID=5274008d-3a15-49c7-a73b-fa52766ce0f6
  InstallationDate: Installed on 2011-01-25 (946 days ago)
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7501
  MarkForUpload: True
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-29-generic root=UUID=c726ed97-45de-4169-bdcd-781676da75cf ro nosplash
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-29-generic N/A
   linux-backports-modules-3.8.0-29-generic  N/A
   linux-firmware                            1.106
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2013-05-03 (118 days ago)
  dmi.bios.date: 09/02/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V1.5B1
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: MS-7501
  dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.5B1:bd09/02/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7501:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-7501:rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
  dmi.product.name: MS-7501
  dmi.product.version: 1.0
  dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD

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