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[shantanu saha <500069@xxxxxxxxxxxxxxxxxx>]

This bug still exits in latest version. It's not only file of USB to HDD
or vice versa. This bug occurs for any kind of large file copy.

System:
Ubuntu 15.10 64bit
Corei7
8GB RAM

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https://bugs.launchpad.net/bugs/500069

Title:
  USB file transfer causes system freezes; ops take hours instead of
  minutes

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Incomplete
Status in linux package in Fedora:
  Unknown

Bug description:
  USB Drive is a MP3 Player 2GB

  sbec@Diamant:~$ lsusb
  Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 003 Device 002: ID 046d:c50e Logitech, Inc. MX-1000 Cordless Mouse Receiver
  Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 001 Device 004: ID 0402:5661 ALi Corp.
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  sbec@Diamant:~$

  Linux Diamant 2.6.31-15-generic #50-Ubuntu SMP Tue Nov 10 14:54:29 UTC 2009 i686 GNU/Linux
  Ubuntu 2.6.31-15.50-generic

  to test, i issued dd command:
  dd if=/dev/zero of=/media/usb-disk/test-file bs=32

  while dd is running i run dstat.... this is in the log file attached.

  other logs are also in the tar.gz file...

  there is a huge USB performance Bug report #1972262. this Report is
  something simular

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