kernel-packages team mailing list archive

[paolo gozzini <frittomesto@xxxxxxxxx>]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/541937

Title:
  Copying files to USB flash drive is extremely slow

Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux” package in Fedora:
  Unknown
Status in openSUSE:
  Unknown

Bug description:
  Copying files from an internal hard drive to an external USB pandrive
  is slowing down during this process in Lucid Lynx alpha3 with all the
  updates until now. Also note that the copying speed is well below the
  standard rate for high-speed USB devices even in the initial state.

  As a first look this phenomenon is independent of the filesystem of
  the USB stick although some effect may be observed. I formatted it
  either ext3, ntfs or vfat the result was the same. Copying starts
  around 20-30 MB/sec transfer speed and around 300 MB copied materials
  the process is slowing down below 15 MB/sec and between 400-500 MB
  transfered data it is below 10 MB/sec. Reaching the 1GB amount of
  copied data the speed is only around 2 MB/sec. In case of using vfat
  file system the transfer speed may go below the 1MB/sec transfer speed
  at this stage.

  The number of the files I transfered from my hard drive to a 16GB USB
  pandrive were 350 with a total size of 5.4GB.

  In an other experiment (with ntfs usb partition) transferring only one
  large file having a size of 2.7GB took more than a hour (0.7 MB/sec in
  average)!

  ProblemType: Bug
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  zoli       1325 F.... pulseaudio
   /dev/snd/pcmC0D0p:   zoli       1325 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'IXP'/'ATI IXP rev 2 with ALC250 at 0xc0003400, irq 17'
     Mixer name	: 'Realtek ALC250 rev 2'
     Components	: 'AC97a:414c4752'
     Controls      : 33
     Simple ctrls  : 21
  Card1.Amixer.info:
   Card hw:1 'Modem'/'ATI IXP Modem rev 2 at 0xc0003800, irq 17'
     Mixer name	: 'Silicon Laboratory Si3036,8 rev 15'
     Components	: 'AC97m:53494c2f'
     Controls      : 3
     Simple ctrls  : 3
  Card1.Codecs.codec97.0.mc97.1.1:
   1-1/0: Silicon Laboratory Si3036,8 rev 15
   
   Extended modem ID: codec=1 LIN1
   Modem status     : GPIO MREF ADC1 DAC1 PRE(ADC2) PRF(DAC2) PRG(HADC) PRH(HDAC)
   Line1 rate       : 13714Hz
  Date: Fri Mar 19 13:46:04 2010
  DistroRelease: Ubuntu 10.04
  HibernationDevice: RESUME=UUID=3ce2aaac-b25e-4863-91a2-0a57ade09901
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100224.1)
  Lsusb:
   Bus 003 Device 003: ID 15d9:0a33 Dexon Mouse
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 018: ID 3538:0059 Power Quotient International Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Acer, inc. Ferrari 4000
  Package: linux-image-2.6.32-16-generic 2.6.32-16.25
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-16-generic root=UUID=4ceac70f-55c9-4a91-baae-aee960ec8114 ro quiet splash
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
  Regression: No
  RelatedPackageVersions: linux-firmware 1.32
  Reproducible: Yes
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  TestedUpstream: No
  Uname: Linux 2.6.32-16-generic x86_64
  dmi.bios.date: 03/20/06
  dmi.bios.vendor: Acer
  dmi.bios.version: 3A27
  dmi.board.name: Ferrari IV
  dmi.board.vendor: Acer, Inc.
  dmi.board.version: Not Applicable
  dmi.chassis.type: 1
  dmi.chassis.vendor: , Inc.
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAcer:bvr3A27:bd03/20/06:svnAcer,inc.:pnFerrari4000:pvrNotApplicable:rvnAcer,Inc.:rnFerrariIV:rvrNotApplicable:cvn,Inc.:ct1:cvrN/A:
  dmi.product.name: Ferrari 4000
  dmi.product.version: Not Applicable
  dmi.sys.vendor: Acer, inc.

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